{
  "currentVersion": "4.0.0",
  "release": {
    "version": "4.0.0",
    "api": "4.0.0",
    "instruments": "4.0.0",
    "frontend": "4.0.0"
  },
  "versionScope": "From 3.5.0 onward, API, instruments and frontend use one coordinated semantic version. Earlier 1.x labels identify legacy sound-only milestones, not API or frontend releases.",
  "method": "Same eight-second phrase and dynamic pins for every revision of an instrument. Dry mono 22050 Hz, equal RMS with shared peak headroom. Most instruments use C4; bass/cello use C3, piccolo C5. Versions 1.0.0\u20131.2.1 reconstruct archived settings with the compatible 1.3.0 renderer, not exact recordings of those releases. Version 1.2.0 has only a preserved violin snapshot. Unchanged renderings are labeled. Spectral plots and audio are generated from the same normalized PCM. Version 4.0.0 rows use the Rust engine and appear only for deliberately changed or new instruments; renders use the same phrase, level and scale. Vocal listening clips are real VocalSet singers (CC BY 4.0): one used for fitting and one held out.",
  "versions": [
    {
      "version": "1.0.0",
      "title": "Original presets",
      "description": "Original catalog voicing; reconstructed from archived settings."
    },
    {
      "version": "1.1.0",
      "title": "Resonance and pressure",
      "description": "Instrument body filters, excitation spectra and dynamic brightness."
    },
    {
      "version": "1.2.0",
      "title": "Bow and breath excitation",
      "description": "Archived violin excitation before independent body-band motion.",
      "only": "violin"
    },
    {
      "version": "1.2.1",
      "title": "Body motion",
      "description": "Bow, reed, air and pluck excitation with sustained timbral movement."
    },
    {
      "version": "1.3.0",
      "title": "Spectral sources",
      "description": "First measured harmonic-envelope sources; frozen release renderer."
    },
    {
      "version": "1.4.0",
      "title": "Articulation and texture",
      "description": "Measured onset contours, sixteen harmonic frames and eight residual-noise bands."
    },
    {
      "version": "3.5.0",
      "title": "Coordinated release",
      "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports."
    },
    {
      "version": "4.0.0",
      "title": "Measured realism",
      "description": "Rust engine. Measured changes only: piano decay and velocity brightness from a real grand piano; new sung vowels fitted to real singers. Other instruments are ports of 3.5.0."
    }
  ],
  "instruments": [
    {
      "id": "grand-piano",
      "name": "grand piano",
      "family": "piano",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-grand-piano-1.0.0.mp3",
          "settingsSha256": "ba5dad2755684cba421da525ed694bd0911e0dd878d1bb033205d1ff1fe71be0",
          "image": "history-grand-piano-1.0.0.png",
          "sha256": "cbd9776d01c94b343e67919edfe1a5771db6932852c0e03354fe1a40a8b3563b"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-grand-piano-1.1.0.mp3",
          "settingsSha256": "20bbe9044eb4f9725c394129ad966e0796ee26dc5e3e7a35624c4b85269d659d",
          "image": "history-grand-piano-1.1.0.png",
          "sha256": "2c45f93165c69fc194f53c454696b2e4cb7e353f3bbff9f09f4bfb4b47f7dc21"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-grand-piano-1.2.1.mp3",
          "settingsSha256": "3435d9f0bc2f1d4e32264e9d865757c99abb7c465db3a38ec73d50a8ffa2d622",
          "image": "history-grand-piano-1.2.1.png",
          "sha256": "7bf3b4e32b489e8bf8e31d2abafc911be4f6b50d4d80ea6dc4116fdec31e374a"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-grand-piano-1.3.0.mp3",
          "settingsSha256": "3435d9f0bc2f1d4e32264e9d865757c99abb7c465db3a38ec73d50a8ffa2d622",
          "unchangedFrom": "1.2.1",
          "image": "history-grand-piano-1.3.0.png",
          "sha256": "7bf3b4e32b489e8bf8e31d2abafc911be4f6b50d4d80ea6dc4116fdec31e374a"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-grand-piano-1.4.0.mp3",
          "settingsSha256": "3435d9f0bc2f1d4e32264e9d865757c99abb7c465db3a38ec73d50a8ffa2d622",
          "unchangedFrom": "1.3.0",
          "image": "history-grand-piano-1.4.0.png",
          "sha256": "7bf3b4e32b489e8bf8e31d2abafc911be4f6b50d4d80ea6dc4116fdec31e374a"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-grand-piano-3.5.0.mp3",
          "settingsSha256": "3435d9f0bc2f1d4e32264e9d865757c99abb7c465db3a38ec73d50a8ffa2d622",
          "unchangedFrom": "1.4.0",
          "image": "history-grand-piano-3.5.0.png",
          "sha256": "7bf3b4e32b489e8bf8e31d2abafc911be4f6b50d4d80ea6dc4116fdec31e374a"
        },
        {
          "version": "4.0.0",
          "title": "Measured realism",
          "description": "Decay, excitation and velocity brightness fitted to a real Kawai grand (VCSL, CC0): notes now fade like struck strings and loud notes are brighter than soft ones.",
          "audio": "history-grand-piano-4.0.0.mp3",
          "settingsSha256": "a94a7cd774cb97888c225249d15509399274870949cdc722f7866b594b8f40f3",
          "image": "history-grand-piano-4.0.0.png",
          "sha256": "93772351d7e036f2413994bfeb540690bedc7a71b95cc80d0ea3ecf0b1ad7ace"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Chordophones/Zithers/Grand%20Piano%2C%20Kawai/Sustains/GPiano_sus_C4_v1_rr1_Player.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Chordophones/Zithers/Grand%20Piano%2C%20Kawai/Sustains/GPiano_sus_C4_v1_rr1_Player.wav",
          "license": "CC0",
          "label": "GPiano_sus_C4_v1_rr1_Player",
          "note": "C4",
          "sha256": "f921d4737ee847ecb55ce251a94e1841069b70e206b00342676954992ea7d0dc",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.0010112551977641312,
            "centroidHz": 522.6,
            "centroidVariationPercent": 5,
            "upperEnergyPercent": 0,
            "attackMs": 17.5
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Chordophones/Zithers/Grand%20Piano%2C%20Kawai/Sustains/GPiano_sus_C4_v2_rr1_Player.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Chordophones/Zithers/Grand%20Piano%2C%20Kawai/Sustains/GPiano_sus_C4_v2_rr1_Player.wav",
          "license": "CC0",
          "label": "GPiano_sus_C4_v2_rr1_Player",
          "note": "C4",
          "sha256": "69845de40a38ed6501746520f9f385ae56200a4372faed48178e64a32a75e58c",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.006774327195572671,
            "centroidHz": 531.4,
            "centroidVariationPercent": 10.4,
            "upperEnergyPercent": 0.03,
            "attackMs": 16.2
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Chordophones/Zithers/Grand%20Piano%2C%20Kawai/Sustains/GPiano_sus_C4_v3_rr1_Player.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Chordophones/Zithers/Grand%20Piano%2C%20Kawai/Sustains/GPiano_sus_C4_v3_rr1_Player.wav",
          "license": "CC0",
          "label": "GPiano_sus_C4_v3_rr1_Player",
          "note": "C4",
          "sha256": "eb5faca3331cd32f15f6a2302dba69b073a2ca600fed606bf456e60260d06e5b",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.026318397235429464,
            "centroidHz": 592.3,
            "centroidVariationPercent": 27,
            "upperEnergyPercent": 0.9,
            "attackMs": 15.3
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/grand-piano.png",
      "referenceSpectrum": "../timbre-atlas/grand-piano-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "bright-piano",
      "name": "bright piano",
      "family": "piano",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-bright-piano-1.0.0.mp3",
          "settingsSha256": "368d4395dab2adb24c4100f748ec6fa07aeb9a10f5d40c0fdc91ff66d9c092f3",
          "image": "history-bright-piano-1.0.0.png",
          "sha256": "c07dc7326469e0382f53f7d1631c7d2d9cd6976f9e20f225c98aec47486f6cad"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-bright-piano-1.1.0.mp3",
          "settingsSha256": "ccf5cfe6f9a25edf4b557674e38570d744542c2a118efb98ae6b889b179919e6",
          "image": "history-bright-piano-1.1.0.png",
          "sha256": "2f0cf5b13a4c50ed6de20a4c23a56a9accf0c1074913053695ee4d26b907f56a"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-bright-piano-1.2.1.mp3",
          "settingsSha256": "7fbeca7faa54adfb26a31ed9a3a330c9d5755fe05030d6bcc05b5cc6ddf5619c",
          "image": "history-bright-piano-1.2.1.png",
          "sha256": "01284d90e62e7417a5a7ccdb3f3ccbff7f14c41021c31993bb38e6fbe8b9e738"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-bright-piano-1.3.0.mp3",
          "settingsSha256": "7fbeca7faa54adfb26a31ed9a3a330c9d5755fe05030d6bcc05b5cc6ddf5619c",
          "unchangedFrom": "1.2.1",
          "image": "history-bright-piano-1.3.0.png",
          "sha256": "01284d90e62e7417a5a7ccdb3f3ccbff7f14c41021c31993bb38e6fbe8b9e738"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-bright-piano-1.4.0.mp3",
          "settingsSha256": "7fbeca7faa54adfb26a31ed9a3a330c9d5755fe05030d6bcc05b5cc6ddf5619c",
          "unchangedFrom": "1.3.0",
          "image": "history-bright-piano-1.4.0.png",
          "sha256": "01284d90e62e7417a5a7ccdb3f3ccbff7f14c41021c31993bb38e6fbe8b9e738"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-bright-piano-3.5.0.mp3",
          "settingsSha256": "7fbeca7faa54adfb26a31ed9a3a330c9d5755fe05030d6bcc05b5cc6ddf5619c",
          "unchangedFrom": "1.4.0",
          "image": "history-bright-piano-3.5.0.png",
          "sha256": "01284d90e62e7417a5a7ccdb3f3ccbff7f14c41021c31993bb38e6fbe8b9e738"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Chordophones/Zithers/Grand%20Piano%2C%20Kawai/Sustains/GPiano_sus_C4_v1_rr1_Player.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Chordophones/Zithers/Grand%20Piano%2C%20Kawai/Sustains/GPiano_sus_C4_v1_rr1_Player.wav",
          "license": "CC0",
          "label": "GPiano_sus_C4_v1_rr1_Player",
          "note": "C4",
          "sha256": "f921d4737ee847ecb55ce251a94e1841069b70e206b00342676954992ea7d0dc",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.0010112551977641312,
            "centroidHz": 522.6,
            "centroidVariationPercent": 5,
            "upperEnergyPercent": 0,
            "attackMs": 17.5
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Chordophones/Zithers/Grand%20Piano%2C%20Kawai/Sustains/GPiano_sus_C4_v2_rr1_Player.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Chordophones/Zithers/Grand%20Piano%2C%20Kawai/Sustains/GPiano_sus_C4_v2_rr1_Player.wav",
          "license": "CC0",
          "label": "GPiano_sus_C4_v2_rr1_Player",
          "note": "C4",
          "sha256": "69845de40a38ed6501746520f9f385ae56200a4372faed48178e64a32a75e58c",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.006774327195572671,
            "centroidHz": 531.4,
            "centroidVariationPercent": 10.4,
            "upperEnergyPercent": 0.03,
            "attackMs": 16.2
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Chordophones/Zithers/Grand%20Piano%2C%20Kawai/Sustains/GPiano_sus_C4_v3_rr1_Player.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Chordophones/Zithers/Grand%20Piano%2C%20Kawai/Sustains/GPiano_sus_C4_v3_rr1_Player.wav",
          "license": "CC0",
          "label": "GPiano_sus_C4_v3_rr1_Player",
          "note": "C4",
          "sha256": "eb5faca3331cd32f15f6a2302dba69b073a2ca600fed606bf456e60260d06e5b",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.026318397235429464,
            "centroidHz": 592.3,
            "centroidVariationPercent": 27,
            "upperEnergyPercent": 0.9,
            "attackMs": 15.3
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/bright-piano.png",
      "referenceSpectrum": "../timbre-atlas/bright-piano-spectrum.png",
      "coverage": "related",
      "contextual": false
    },
    {
      "id": "electric-grand",
      "name": "electric grand",
      "family": "piano",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20.823441351156212,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-electric-grand-1.0.0.mp3",
          "settingsSha256": "e76c5b5bb9d41ed3a30f0ccd46c6ac6e6eb340498487a0a3a765e5258996d9ab",
          "image": "history-electric-grand-1.0.0.png",
          "sha256": "2777f2737cb38d8dfeca3a3289ab7d1c2fd5f25e07424b7cbf5cc3d05ffa57c6"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-electric-grand-1.1.0.mp3",
          "settingsSha256": "04082cf35bbc26ffff11b72a72152ebfaae6acacdcd6f114d2df54f02eeae618",
          "image": "history-electric-grand-1.1.0.png",
          "sha256": "827ca8cd7a772ade4adc915dfcb867ece9c751176ff105ae86e53ea0dee73498"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-electric-grand-1.2.1.mp3",
          "settingsSha256": "7f45f2363aed7d41a922d26e82508e0aca864ce27d524a4b4111598914ee8863",
          "image": "history-electric-grand-1.2.1.png",
          "sha256": "e5d1c532c1d594076263a43f8ff1b3b8a0fce8f11ea973960614d0b9515fa741"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-electric-grand-1.3.0.mp3",
          "settingsSha256": "6c42e9d2fb766c28821561d046989432b5c539d21a4dbebaf2f5d8a4402602c9",
          "image": "history-electric-grand-1.3.0.png",
          "sha256": "b53e215a83d99dee8aa5f73b8de789d8c6615a571710692ced48b7c0e80001fb"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-electric-grand-1.4.0.mp3",
          "settingsSha256": "6c42e9d2fb766c28821561d046989432b5c539d21a4dbebaf2f5d8a4402602c9",
          "unchangedFrom": "1.3.0",
          "image": "history-electric-grand-1.4.0.png",
          "sha256": "b53e215a83d99dee8aa5f73b8de789d8c6615a571710692ced48b7c0e80001fb"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-electric-grand-3.5.0.mp3",
          "settingsSha256": "6c42e9d2fb766c28821561d046989432b5c539d21a4dbebaf2f5d8a4402602c9",
          "unchangedFrom": "1.4.0",
          "image": "history-electric-grand-3.5.0.png",
          "sha256": "b53e215a83d99dee8aa5f73b8de789d8c6615a571710692ced48b7c0e80001fb"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Chordophones/Zithers/Grand%20Piano%2C%20Kawai/Sustains/GPiano_sus_C4_v1_rr1_Player.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Chordophones/Zithers/Grand%20Piano%2C%20Kawai/Sustains/GPiano_sus_C4_v1_rr1_Player.wav",
          "license": "CC0",
          "label": "GPiano_sus_C4_v1_rr1_Player",
          "note": "C4",
          "sha256": "f921d4737ee847ecb55ce251a94e1841069b70e206b00342676954992ea7d0dc",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.0010112551977641312,
            "centroidHz": 522.6,
            "centroidVariationPercent": 5,
            "upperEnergyPercent": 0,
            "attackMs": 17.5
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Chordophones/Zithers/Grand%20Piano%2C%20Kawai/Sustains/GPiano_sus_C4_v2_rr1_Player.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Chordophones/Zithers/Grand%20Piano%2C%20Kawai/Sustains/GPiano_sus_C4_v2_rr1_Player.wav",
          "license": "CC0",
          "label": "GPiano_sus_C4_v2_rr1_Player",
          "note": "C4",
          "sha256": "69845de40a38ed6501746520f9f385ae56200a4372faed48178e64a32a75e58c",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.006774327195572671,
            "centroidHz": 531.4,
            "centroidVariationPercent": 10.4,
            "upperEnergyPercent": 0.03,
            "attackMs": 16.2
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Chordophones/Zithers/Grand%20Piano%2C%20Kawai/Sustains/GPiano_sus_C4_v3_rr1_Player.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Chordophones/Zithers/Grand%20Piano%2C%20Kawai/Sustains/GPiano_sus_C4_v3_rr1_Player.wav",
          "license": "CC0",
          "label": "GPiano_sus_C4_v3_rr1_Player",
          "note": "C4",
          "sha256": "eb5faca3331cd32f15f6a2302dba69b073a2ca600fed606bf456e60260d06e5b",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.026318397235429464,
            "centroidHz": 592.3,
            "centroidVariationPercent": 27,
            "upperEnergyPercent": 0.9,
            "attackMs": 15.3
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/electric-grand.png",
      "referenceSpectrum": "../timbre-atlas/electric-grand-spectrum.png",
      "coverage": "related",
      "contextual": false
    },
    {
      "id": "honky-tonk-piano",
      "name": "honky-tonk piano",
      "family": "piano",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-honky-tonk-piano-1.0.0.mp3",
          "settingsSha256": "cfc9d39cd493e5bcb12bca0121f7f0a7739d1d73cf4d37f7e197f48670252e7a",
          "image": "history-honky-tonk-piano-1.0.0.png",
          "sha256": "209dae1258ef85094db4e72b8ebaa33b0ddd4d0cfb42a3b757683453197c2073"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-honky-tonk-piano-1.1.0.mp3",
          "settingsSha256": "9e358ffbc21bb8db7eb7b23945b98e1bb738a637034d7daeea44630254be2345",
          "image": "history-honky-tonk-piano-1.1.0.png",
          "sha256": "af8d25a4975a1cee7bd9db684c808484bbfdd84c275112f4b675131e15c2d74e"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-honky-tonk-piano-1.2.1.mp3",
          "settingsSha256": "717643c5cad6fb320eb4ad9f280e2c63156ec072fc152fd8aa84eb6a74dd5f29",
          "image": "history-honky-tonk-piano-1.2.1.png",
          "sha256": "d1c64ede7315f323d9e84f59d178d4df942608a2277e2cee81287c3cbb673b67"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-honky-tonk-piano-1.3.0.mp3",
          "settingsSha256": "717643c5cad6fb320eb4ad9f280e2c63156ec072fc152fd8aa84eb6a74dd5f29",
          "unchangedFrom": "1.2.1",
          "image": "history-honky-tonk-piano-1.3.0.png",
          "sha256": "d1c64ede7315f323d9e84f59d178d4df942608a2277e2cee81287c3cbb673b67"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-honky-tonk-piano-1.4.0.mp3",
          "settingsSha256": "717643c5cad6fb320eb4ad9f280e2c63156ec072fc152fd8aa84eb6a74dd5f29",
          "unchangedFrom": "1.3.0",
          "image": "history-honky-tonk-piano-1.4.0.png",
          "sha256": "d1c64ede7315f323d9e84f59d178d4df942608a2277e2cee81287c3cbb673b67"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-honky-tonk-piano-3.5.0.mp3",
          "settingsSha256": "717643c5cad6fb320eb4ad9f280e2c63156ec072fc152fd8aa84eb6a74dd5f29",
          "unchangedFrom": "1.4.0",
          "image": "history-honky-tonk-piano-3.5.0.png",
          "sha256": "d1c64ede7315f323d9e84f59d178d4df942608a2277e2cee81287c3cbb673b67"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Chordophones/Zithers/Grand%20Piano%2C%20Kawai/Sustains/GPiano_sus_C4_v1_rr1_Player.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Chordophones/Zithers/Grand%20Piano%2C%20Kawai/Sustains/GPiano_sus_C4_v1_rr1_Player.wav",
          "license": "CC0",
          "label": "GPiano_sus_C4_v1_rr1_Player",
          "note": "C4",
          "sha256": "f921d4737ee847ecb55ce251a94e1841069b70e206b00342676954992ea7d0dc",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.0010112551977641312,
            "centroidHz": 522.6,
            "centroidVariationPercent": 5,
            "upperEnergyPercent": 0,
            "attackMs": 17.5
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Chordophones/Zithers/Grand%20Piano%2C%20Kawai/Sustains/GPiano_sus_C4_v2_rr1_Player.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Chordophones/Zithers/Grand%20Piano%2C%20Kawai/Sustains/GPiano_sus_C4_v2_rr1_Player.wav",
          "license": "CC0",
          "label": "GPiano_sus_C4_v2_rr1_Player",
          "note": "C4",
          "sha256": "69845de40a38ed6501746520f9f385ae56200a4372faed48178e64a32a75e58c",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.006774327195572671,
            "centroidHz": 531.4,
            "centroidVariationPercent": 10.4,
            "upperEnergyPercent": 0.03,
            "attackMs": 16.2
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Chordophones/Zithers/Grand%20Piano%2C%20Kawai/Sustains/GPiano_sus_C4_v3_rr1_Player.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Chordophones/Zithers/Grand%20Piano%2C%20Kawai/Sustains/GPiano_sus_C4_v3_rr1_Player.wav",
          "license": "CC0",
          "label": "GPiano_sus_C4_v3_rr1_Player",
          "note": "C4",
          "sha256": "eb5faca3331cd32f15f6a2302dba69b073a2ca600fed606bf456e60260d06e5b",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.026318397235429464,
            "centroidHz": 592.3,
            "centroidVariationPercent": 27,
            "upperEnergyPercent": 0.9,
            "attackMs": 15.3
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/honky-tonk-piano.png",
      "referenceSpectrum": "../timbre-atlas/honky-tonk-piano-spectrum.png",
      "coverage": "related",
      "contextual": false
    },
    {
      "id": "electric-piano-1",
      "name": "electric piano 1",
      "family": "rhodes",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-electric-piano-1-1.0.0.mp3",
          "settingsSha256": "06d45e68f55d6490c0d51bb5bd949db62c364775317946a33ba3c2070522dfad",
          "image": "history-electric-piano-1-1.0.0.png",
          "sha256": "6372c54f160007940754e7deec0c2983eb33c8a5ba38c7a0883a3029caa40370"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-electric-piano-1-1.1.0.mp3",
          "settingsSha256": "ea4cbde9e14aef73084783edf0f0cb8fac8440fbd1f70f46085e984d70698f3b",
          "image": "history-electric-piano-1-1.1.0.png",
          "sha256": "d6a4c897c01067765c3680db83de4008a5d35ac5758032347866d636506c7a12"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-electric-piano-1-1.2.1.mp3",
          "settingsSha256": "ea4cbde9e14aef73084783edf0f0cb8fac8440fbd1f70f46085e984d70698f3b",
          "unchangedFrom": "1.1.0",
          "image": "history-electric-piano-1-1.2.1.png",
          "sha256": "d6a4c897c01067765c3680db83de4008a5d35ac5758032347866d636506c7a12"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-electric-piano-1-1.3.0.mp3",
          "settingsSha256": "ea4cbde9e14aef73084783edf0f0cb8fac8440fbd1f70f46085e984d70698f3b",
          "unchangedFrom": "1.2.1",
          "image": "history-electric-piano-1-1.3.0.png",
          "sha256": "d6a4c897c01067765c3680db83de4008a5d35ac5758032347866d636506c7a12"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-electric-piano-1-1.4.0.mp3",
          "settingsSha256": "ea4cbde9e14aef73084783edf0f0cb8fac8440fbd1f70f46085e984d70698f3b",
          "unchangedFrom": "1.3.0",
          "image": "history-electric-piano-1-1.4.0.png",
          "sha256": "d6a4c897c01067765c3680db83de4008a5d35ac5758032347866d636506c7a12"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-electric-piano-1-3.5.0.mp3",
          "settingsSha256": "ea4cbde9e14aef73084783edf0f0cb8fac8440fbd1f70f46085e984d70698f3b",
          "unchangedFrom": "1.4.0",
          "image": "history-electric-piano-1-3.5.0.png",
          "sha256": "d6a4c897c01067765c3680db83de4008a5d35ac5758032347866d636506c7a12"
        }
      ],
      "references": [
        {
          "url": "https://cdn.freesound.org/previews/65/65762_7037-hq.mp3",
          "sourceUrl": "https://freesound.org/people/tim.kahn/sounds/65762/",
          "source": "Freesound - C_S Rhodes Mark II G1.aif by tim.kahn",
          "license": "CC BY 4.0",
          "label": "Freesound - C_S Rhodes Mark II G1.aif by tim.kahn; compressed preview",
          "note": "G1",
          "sha256": "ff4b7f1cf3f50b41122fdea9436f9d81844e97ab9ef86b430293bbf5e398fd68",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 43,
          "features": {
            "rms": 0.3104034053327836,
            "centroidHz": 99.8,
            "centroidVariationPercent": 0.7,
            "upperEnergyPercent": 0,
            "attackMs": 24.7
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://cdn.freesound.org/previews/65/65761_7037-hq.mp3",
          "sourceUrl": "https://freesound.org/people/tim.kahn/sounds/65761/",
          "source": "Freesound - C_S Rhodes Mark II G#1.aif by tim.kahn",
          "license": "CC BY 4.0",
          "label": "Freesound - C_S Rhodes Mark II G#1.aif by tim.kahn; compressed preview",
          "note": "G#1",
          "sha256": "ebe9093fb9ca938af76f102f667ab2a02b64c94fa345349cc6d0dabbd88d165c",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 44,
          "features": {
            "rms": 0.2990877745997866,
            "centroidHz": 132,
            "centroidVariationPercent": 4.4,
            "upperEnergyPercent": 0,
            "attackMs": 9.9
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://cdn.freesound.org/previews/65/65760_7037-hq.mp3",
          "sourceUrl": "https://freesound.org/people/tim.kahn/sounds/65760/",
          "source": "Freesound - C_S Rhodes Mark II F1.aif by tim.kahn",
          "license": "CC BY 4.0",
          "label": "Freesound - C_S Rhodes Mark II F1.aif by tim.kahn; compressed preview",
          "note": "F1",
          "sha256": "610685940aae11e73ec52ad622b47cac7290accf101b7a4436586742596f4017",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 41,
          "features": {
            "rms": 0.32147181258672863,
            "centroidHz": 101.7,
            "centroidVariationPercent": 3,
            "upperEnergyPercent": 0,
            "attackMs": 13.8
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/electric-piano-1.png",
      "referenceSpectrum": "../timbre-atlas/electric-piano-1-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "electric-piano-2",
      "name": "electric piano 2",
      "family": "rhodes",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-electric-piano-2-1.0.0.mp3",
          "settingsSha256": "4522c64e9fdb19c628a9bbcb5bfa1aabb7a54bf437931d1196682e93d7bde150",
          "image": "history-electric-piano-2-1.0.0.png",
          "sha256": "1b244b07b3e5b4f0146e9c760fcba7142f7ab20b26481337ead1d43b7ad2314b"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-electric-piano-2-1.1.0.mp3",
          "settingsSha256": "4fbc444f8773da49c05cee06936eef304c12fcbc678a5c4eaa83dccf1f85ccb5",
          "image": "history-electric-piano-2-1.1.0.png",
          "sha256": "7ab54b6002d09b8b6d7ae601ab3f62f012eba429fb497b99b7605ce0d17d234d"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-electric-piano-2-1.2.1.mp3",
          "settingsSha256": "4fbc444f8773da49c05cee06936eef304c12fcbc678a5c4eaa83dccf1f85ccb5",
          "unchangedFrom": "1.1.0",
          "image": "history-electric-piano-2-1.2.1.png",
          "sha256": "7ab54b6002d09b8b6d7ae601ab3f62f012eba429fb497b99b7605ce0d17d234d"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-electric-piano-2-1.3.0.mp3",
          "settingsSha256": "4fbc444f8773da49c05cee06936eef304c12fcbc678a5c4eaa83dccf1f85ccb5",
          "unchangedFrom": "1.2.1",
          "image": "history-electric-piano-2-1.3.0.png",
          "sha256": "7ab54b6002d09b8b6d7ae601ab3f62f012eba429fb497b99b7605ce0d17d234d"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-electric-piano-2-1.4.0.mp3",
          "settingsSha256": "4fbc444f8773da49c05cee06936eef304c12fcbc678a5c4eaa83dccf1f85ccb5",
          "unchangedFrom": "1.3.0",
          "image": "history-electric-piano-2-1.4.0.png",
          "sha256": "7ab54b6002d09b8b6d7ae601ab3f62f012eba429fb497b99b7605ce0d17d234d"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-electric-piano-2-3.5.0.mp3",
          "settingsSha256": "4fbc444f8773da49c05cee06936eef304c12fcbc678a5c4eaa83dccf1f85ccb5",
          "unchangedFrom": "1.4.0",
          "image": "history-electric-piano-2-3.5.0.png",
          "sha256": "7ab54b6002d09b8b6d7ae601ab3f62f012eba429fb497b99b7605ce0d17d234d"
        }
      ],
      "references": [
        {
          "url": "https://cdn.freesound.org/previews/65/65762_7037-hq.mp3",
          "sourceUrl": "https://freesound.org/people/tim.kahn/sounds/65762/",
          "source": "Freesound - C_S Rhodes Mark II G1.aif by tim.kahn",
          "license": "CC BY 4.0",
          "label": "Freesound - C_S Rhodes Mark II G1.aif by tim.kahn; compressed preview",
          "note": "G1",
          "sha256": "ff4b7f1cf3f50b41122fdea9436f9d81844e97ab9ef86b430293bbf5e398fd68",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 43,
          "features": {
            "rms": 0.3104034053327836,
            "centroidHz": 99.8,
            "centroidVariationPercent": 0.7,
            "upperEnergyPercent": 0,
            "attackMs": 24.7
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://cdn.freesound.org/previews/65/65761_7037-hq.mp3",
          "sourceUrl": "https://freesound.org/people/tim.kahn/sounds/65761/",
          "source": "Freesound - C_S Rhodes Mark II G#1.aif by tim.kahn",
          "license": "CC BY 4.0",
          "label": "Freesound - C_S Rhodes Mark II G#1.aif by tim.kahn; compressed preview",
          "note": "G#1",
          "sha256": "ebe9093fb9ca938af76f102f667ab2a02b64c94fa345349cc6d0dabbd88d165c",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 44,
          "features": {
            "rms": 0.2990877745997866,
            "centroidHz": 132,
            "centroidVariationPercent": 4.4,
            "upperEnergyPercent": 0,
            "attackMs": 9.9
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://cdn.freesound.org/previews/65/65760_7037-hq.mp3",
          "sourceUrl": "https://freesound.org/people/tim.kahn/sounds/65760/",
          "source": "Freesound - C_S Rhodes Mark II F1.aif by tim.kahn",
          "license": "CC BY 4.0",
          "label": "Freesound - C_S Rhodes Mark II F1.aif by tim.kahn; compressed preview",
          "note": "F1",
          "sha256": "610685940aae11e73ec52ad622b47cac7290accf101b7a4436586742596f4017",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 41,
          "features": {
            "rms": 0.32147181258672863,
            "centroidHz": 101.7,
            "centroidVariationPercent": 3,
            "upperEnergyPercent": 0,
            "attackMs": 13.8
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/electric-piano-2.png",
      "referenceSpectrum": "../timbre-atlas/electric-piano-2-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "harpsichord",
      "name": "harpsichord",
      "family": "harpsichord",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-harpsichord-1.0.0.mp3",
          "settingsSha256": "d6522dd56c868d74bf30a175fc7e9328feb73f931017bd3b0fc557c80b8c834e",
          "image": "history-harpsichord-1.0.0.png",
          "sha256": "beb5d745a298651d51053f91ab5b1a25c56caa0a9960d39cf601ffeb8bf6075b"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-harpsichord-1.1.0.mp3",
          "settingsSha256": "58741e8d645ab7e65eefac590e5cf5e3af9672f7a834cdedfb146c88ccf6e5ac",
          "image": "history-harpsichord-1.1.0.png",
          "sha256": "637cc850f57357d3ba704ed348828d6b774a10ecd7b14feff46e0bec71256c92"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-harpsichord-1.2.1.mp3",
          "settingsSha256": "11850581185ce079d796a6fe6e0f1cc75312ab91215b976df657711d6765c76e",
          "image": "history-harpsichord-1.2.1.png",
          "sha256": "f50683ddf6c9efec83a299bc9758178eefec3d8900808789479ffea4545955b4"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-harpsichord-1.3.0.mp3",
          "settingsSha256": "11850581185ce079d796a6fe6e0f1cc75312ab91215b976df657711d6765c76e",
          "unchangedFrom": "1.2.1",
          "image": "history-harpsichord-1.3.0.png",
          "sha256": "f50683ddf6c9efec83a299bc9758178eefec3d8900808789479ffea4545955b4"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-harpsichord-1.4.0.mp3",
          "settingsSha256": "11850581185ce079d796a6fe6e0f1cc75312ab91215b976df657711d6765c76e",
          "unchangedFrom": "1.3.0",
          "image": "history-harpsichord-1.4.0.png",
          "sha256": "f50683ddf6c9efec83a299bc9758178eefec3d8900808789479ffea4545955b4"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-harpsichord-3.5.0.mp3",
          "settingsSha256": "11850581185ce079d796a6fe6e0f1cc75312ab91215b976df657711d6765c76e",
          "unchangedFrom": "1.4.0",
          "image": "history-harpsichord-3.5.0.png",
          "sha256": "f50683ddf6c9efec83a299bc9758178eefec3d8900808789479ffea4545955b4"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Chordophones/Zithers/Harpsichord%2C%20French/Sustains/Harpsi2_Normal_C4_rr1_Main.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Chordophones/Zithers/Harpsichord%2C%20French/Sustains/Harpsi2_Normal_C4_rr1_Main.wav",
          "license": "CC0",
          "label": "Harpsi2_Normal_C4_rr1_Main",
          "note": "C4",
          "sha256": "57b13d0ce01a8ad50c09ad1d7ecda3df1298c73ab9dc49988fbdf9dc2ce277a5",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.01167316726601359,
            "centroidHz": 1490.8,
            "centroidVariationPercent": 27,
            "upperEnergyPercent": 20.85,
            "attackMs": 13.5
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Chordophones/Zithers/Harpsichord%2C%20French/Sustains/Harpsi2_Normal_D4_rr1_Main.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Chordophones/Zithers/Harpsichord%2C%20French/Sustains/Harpsi2_Normal_D4_rr1_Main.wav",
          "license": "CC0",
          "label": "Harpsi2_Normal_D4_rr1_Main",
          "note": "D4",
          "sha256": "92dbadc65d3d8263671ff17057a4ec64043fccab22ad22eae4b08c4204afc9ff",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 74,
          "features": {
            "rms": 0.008146010524964288,
            "centroidHz": 1422.6,
            "centroidVariationPercent": 22,
            "upperEnergyPercent": 24.2,
            "attackMs": 17.4
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Chordophones/Zithers/Harpsichord%2C%20French/Sustains/Harpsi2_Normal_E4_rr1_Main.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Chordophones/Zithers/Harpsichord%2C%20French/Sustains/Harpsi2_Normal_E4_rr1_Main.wav",
          "license": "CC0",
          "label": "Harpsi2_Normal_E4_rr1_Main",
          "note": "E4",
          "sha256": "ba938d908943ff8f77434a07298a11f53257a3c02dc8e5dd50d1095c235bf5af",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 76,
          "features": {
            "rms": 0.015229270628051607,
            "centroidHz": 952.1,
            "centroidVariationPercent": 15.2,
            "upperEnergyPercent": 9.11,
            "attackMs": 10.5
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/harpsichord.png",
      "referenceSpectrum": "../timbre-atlas/harpsichord-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "clavinet",
      "name": "clavinet",
      "family": "clavinet",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-clavinet-1.0.0.mp3",
          "settingsSha256": "5439e1bd6c757e45f2f03793dacdc0bdd6388c6f146b7fa64ebc564569ec8d2f",
          "image": "history-clavinet-1.0.0.png",
          "sha256": "56c4a530d0b20438123acba494d367992139b1bd7d1c90ec6e98cfc002e65d9b"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-clavinet-1.1.0.mp3",
          "settingsSha256": "5909403f4ba50e255549b3d79a77915d944397e7e34fc2351625f1cacace3ca5",
          "image": "history-clavinet-1.1.0.png",
          "sha256": "a0cd4d429240c080979ac52fddfae4e58ca01330c696d3c152ed613add529073"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-clavinet-1.2.1.mp3",
          "settingsSha256": "769262f08d63c0d45247c23476d2e20eca5eb194bfa76a1ecea27a7cadae47dd",
          "image": "history-clavinet-1.2.1.png",
          "sha256": "8055e0e7c7646a4a49dcd1ea8ada0b0063bcbe1f80df6c31a46bbc106e180a60"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-clavinet-1.3.0.mp3",
          "settingsSha256": "769262f08d63c0d45247c23476d2e20eca5eb194bfa76a1ecea27a7cadae47dd",
          "unchangedFrom": "1.2.1",
          "image": "history-clavinet-1.3.0.png",
          "sha256": "8055e0e7c7646a4a49dcd1ea8ada0b0063bcbe1f80df6c31a46bbc106e180a60"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-clavinet-1.4.0.mp3",
          "settingsSha256": "769262f08d63c0d45247c23476d2e20eca5eb194bfa76a1ecea27a7cadae47dd",
          "unchangedFrom": "1.3.0",
          "image": "history-clavinet-1.4.0.png",
          "sha256": "8055e0e7c7646a4a49dcd1ea8ada0b0063bcbe1f80df6c31a46bbc106e180a60"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-clavinet-3.5.0.mp3",
          "settingsSha256": "769262f08d63c0d45247c23476d2e20eca5eb194bfa76a1ecea27a7cadae47dd",
          "unchangedFrom": "1.4.0",
          "image": "history-clavinet-3.5.0.png",
          "sha256": "8055e0e7c7646a4a49dcd1ea8ada0b0063bcbe1f80df6c31a46bbc106e180a60"
        }
      ],
      "references": [
        {
          "url": "https://upload.wikimedia.org/wikipedia/commons/e/e3/Hohner_Clavinet_D6.ogg",
          "sourceUrl": "https://commons.wikimedia.org/wiki/File:Hohner_Clavinet_D6.ogg",
          "source": "Markus Ruffing. / Wikimedia Commons",
          "license": "Copyrighted free use",
          "licenseUrl": "https://commons.wikimedia.org/wiki/File:Hohner_Clavinet_D6.ogg",
          "label": "clavinet performance excerpt 1 of 3 (same recording)",
          "note": null,
          "excerpt": 0,
          "contextual": true,
          "sha256": "6f21a2d1b859173360099b9b6c1d16927403a1847c5c144667f2e850d3c49cc9",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": null,
          "features": {
            "rms": 0.1658963855878897,
            "centroidHz": 753.8,
            "centroidVariationPercent": 71.9,
            "upperEnergyPercent": 11.98,
            "attackMs": 1920.3
          },
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://upload.wikimedia.org/wikipedia/commons/e/e3/Hohner_Clavinet_D6.ogg",
          "sourceUrl": "https://commons.wikimedia.org/wiki/File:Hohner_Clavinet_D6.ogg",
          "source": "Markus Ruffing. / Wikimedia Commons",
          "license": "Copyrighted free use",
          "licenseUrl": "https://commons.wikimedia.org/wiki/File:Hohner_Clavinet_D6.ogg",
          "label": "clavinet performance excerpt 2 of 3 (same recording)",
          "note": null,
          "excerpt": 1,
          "contextual": true,
          "sha256": "6f21a2d1b859173360099b9b6c1d16927403a1847c5c144667f2e850d3c49cc9",
          "noteOffset": 0,
          "start": 48.995,
          "measuredMidi": null,
          "features": {
            "rms": 0.13233444055278623,
            "centroidHz": 929.3,
            "centroidVariationPercent": 38.1,
            "upperEnergyPercent": 5.66,
            "attackMs": 115.8
          },
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://upload.wikimedia.org/wikipedia/commons/e/e3/Hohner_Clavinet_D6.ogg",
          "sourceUrl": "https://commons.wikimedia.org/wiki/File:Hohner_Clavinet_D6.ogg",
          "source": "Markus Ruffing. / Wikimedia Commons",
          "license": "Copyrighted free use",
          "licenseUrl": "https://commons.wikimedia.org/wiki/File:Hohner_Clavinet_D6.ogg",
          "label": "clavinet performance excerpt 3 of 3 (same recording)",
          "note": null,
          "excerpt": 2,
          "contextual": true,
          "sha256": "6f21a2d1b859173360099b9b6c1d16927403a1847c5c144667f2e850d3c49cc9",
          "noteOffset": 0,
          "start": 97.989,
          "measuredMidi": null,
          "features": {
            "rms": 0.15721341838424918,
            "centroidHz": 1070.2,
            "centroidVariationPercent": 24.8,
            "upperEnergyPercent": 6.91,
            "attackMs": 84.6
          },
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/clavinet.png",
      "referenceSpectrum": "../timbre-atlas/clavinet-spectrum.png",
      "coverage": "instrument",
      "contextual": true
    },
    {
      "id": "dulcimer",
      "name": "dulcimer",
      "family": "dulcimer",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-dulcimer-1.0.0.mp3",
          "settingsSha256": "a9451f3dfcfb386509ebb0f3970037b2a52dbc766e279d1fa45745c1f66ea0a1",
          "image": "history-dulcimer-1.0.0.png",
          "sha256": "6905b65dd0dd1c994364e65e537e8be87a5a6653a509a9fad37e7585fcdebc6b"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-dulcimer-1.1.0.mp3",
          "settingsSha256": "8fa237d675d6a645dd8330815fd48e5f7f9b4050c011f7f3de33257ebb21fa5b",
          "image": "history-dulcimer-1.1.0.png",
          "sha256": "e1dac31ae38dec3a73123d9468e48a1220da2d72d4cad512e448ab99f5158acb"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-dulcimer-1.2.1.mp3",
          "settingsSha256": "be6acd614012aa441e3c6ed1898973a54c2eecb711e8eaf1c341df07f2f162db",
          "image": "history-dulcimer-1.2.1.png",
          "sha256": "a82007a9c11ca345e2af408c45896b36e01ab245b23ff58a948db9572c609fff"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-dulcimer-1.3.0.mp3",
          "settingsSha256": "be6acd614012aa441e3c6ed1898973a54c2eecb711e8eaf1c341df07f2f162db",
          "unchangedFrom": "1.2.1",
          "image": "history-dulcimer-1.3.0.png",
          "sha256": "a82007a9c11ca345e2af408c45896b36e01ab245b23ff58a948db9572c609fff"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-dulcimer-1.4.0.mp3",
          "settingsSha256": "be6acd614012aa441e3c6ed1898973a54c2eecb711e8eaf1c341df07f2f162db",
          "unchangedFrom": "1.3.0",
          "image": "history-dulcimer-1.4.0.png",
          "sha256": "a82007a9c11ca345e2af408c45896b36e01ab245b23ff58a948db9572c609fff"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-dulcimer-3.5.0.mp3",
          "settingsSha256": "be6acd614012aa441e3c6ed1898973a54c2eecb711e8eaf1c341df07f2f162db",
          "unchangedFrom": "1.4.0",
          "image": "history-dulcimer-3.5.0.png",
          "sha256": "a82007a9c11ca345e2af408c45896b36e01ab245b23ff58a948db9572c609fff"
        }
      ],
      "references": [
        {
          "url": "https://cdn.freesound.org/previews/342/342921_5132876-hq.mp3",
          "sourceUrl": "https://freesound.org/people/iternetcone/sounds/342921/",
          "source": "Freesound - High D.wav by iternetcone",
          "license": "CC BY 4.0",
          "label": "Freesound - High D.wav by iternetcone; compressed preview",
          "note": "D5",
          "sha256": "456649645e7a4213f8fc19ac5b70838570779a70cdab77248d3334b9f6120773",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 74,
          "features": {
            "rms": 0.11118332047846168,
            "centroidHz": 1444.7,
            "centroidVariationPercent": 37.2,
            "upperEnergyPercent": 21.47,
            "attackMs": 2.7
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://cdn.freesound.org/previews/342/342920_5132876-hq.mp3",
          "sourceUrl": "https://freesound.org/people/iternetcone/sounds/342920/",
          "source": "Freesound - G.wav by iternetcone",
          "license": "CC BY 4.0",
          "label": "Freesound - G.wav by iternetcone; compressed preview",
          "note": "G4",
          "sha256": "a62b95490f22236a387932d6eb8a30397fc2a726e3a2bdaf31356f9f47f9a6fc",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 67,
          "features": {
            "rms": 0.1905687491727422,
            "centroidHz": 652.1,
            "centroidVariationPercent": 14.4,
            "upperEnergyPercent": 2.9,
            "attackMs": 6.2
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://cdn.freesound.org/previews/342/342919_5132876-hq.mp3",
          "sourceUrl": "https://freesound.org/people/iternetcone/sounds/342919/",
          "source": "Freesound - High C.wav by iternetcone",
          "license": "CC BY 4.0",
          "label": "Freesound - High C.wav by iternetcone; compressed preview",
          "note": "C5",
          "sha256": "047b30ce96ffbeb7839657ecc0e4d09a4ab3c2058f3da29da90044ecd907268a",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.1857841211807413,
            "centroidHz": 815.4,
            "centroidVariationPercent": 26.7,
            "upperEnergyPercent": 6.33,
            "attackMs": 25.6
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/dulcimer.png",
      "referenceSpectrum": "../timbre-atlas/dulcimer-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "celesta",
      "name": "celesta",
      "family": "celesta",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-celesta-1.0.0.mp3",
          "settingsSha256": "67db7f84d96e00e3d70ec5bcbf9243b3cbb7ed8f1593ed6a27bcbcd399d86f18",
          "image": "history-celesta-1.0.0.png",
          "sha256": "7a8b02112db1475560f2b9f5fcf76ba2a64c3b1a16ecb872ed537540cfe82ce9"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-celesta-1.1.0.mp3",
          "settingsSha256": "09b48f750d24f4eabfd5677fa34d16595853119ee6fee8ec94ff3723d9977c4b",
          "image": "history-celesta-1.1.0.png",
          "sha256": "7ee11fa10374b5edc149578b978c32f8fbe77db4801a2b27c09915b416d82c08"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-celesta-1.2.1.mp3",
          "settingsSha256": "09b48f750d24f4eabfd5677fa34d16595853119ee6fee8ec94ff3723d9977c4b",
          "unchangedFrom": "1.1.0",
          "image": "history-celesta-1.2.1.png",
          "sha256": "7ee11fa10374b5edc149578b978c32f8fbe77db4801a2b27c09915b416d82c08"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-celesta-1.3.0.mp3",
          "settingsSha256": "09b48f750d24f4eabfd5677fa34d16595853119ee6fee8ec94ff3723d9977c4b",
          "unchangedFrom": "1.2.1",
          "image": "history-celesta-1.3.0.png",
          "sha256": "7ee11fa10374b5edc149578b978c32f8fbe77db4801a2b27c09915b416d82c08"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-celesta-1.4.0.mp3",
          "settingsSha256": "09b48f750d24f4eabfd5677fa34d16595853119ee6fee8ec94ff3723d9977c4b",
          "unchangedFrom": "1.3.0",
          "image": "history-celesta-1.4.0.png",
          "sha256": "7ee11fa10374b5edc149578b978c32f8fbe77db4801a2b27c09915b416d82c08"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-celesta-3.5.0.mp3",
          "settingsSha256": "09b48f750d24f4eabfd5677fa34d16595853119ee6fee8ec94ff3723d9977c4b",
          "unchangedFrom": "1.4.0",
          "image": "history-celesta-3.5.0.png",
          "sha256": "7ee11fa10374b5edc149578b978c32f8fbe77db4801a2b27c09915b416d82c08"
        }
      ],
      "references": [
        {
          "url": "https://gitlab.com/echoparallax/a-sampled-celesta/-/raw/main/Samples/Celesta%20Tuned%20Denoised%20Mix.sf2?inline=false",
          "sampleIndex": 32,
          "sampleName": "C4 rr1L",
          "sourceUrl": "https://gitlab.com/echoparallax/a-sampled-celesta",
          "source": "echo~parallax / A Sampled Celesta (Mustel)",
          "license": "CC0",
          "label": "C4 rr1L; recorded, tuned and denoised; left microphone channel",
          "note": "C4",
          "sha256": "bb4b4c0f721dd4db8b63e00fe04d625ea341df1f11b7b541c005b63ec3346e02",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.11075713958154525,
            "centroidHz": 264.6,
            "centroidVariationPercent": 0.4,
            "upperEnergyPercent": 0.02,
            "attackMs": 27.3
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://gitlab.com/echoparallax/a-sampled-celesta/-/raw/main/Samples/Celesta%20Tuned%20Denoised%20Mix.sf2?inline=false",
          "sampleIndex": 60,
          "sampleName": "E4 rr1L",
          "sourceUrl": "https://gitlab.com/echoparallax/a-sampled-celesta",
          "source": "echo~parallax / A Sampled Celesta (Mustel)",
          "license": "CC0",
          "label": "E4 rr1L; recorded, tuned and denoised; left microphone channel",
          "note": "E4",
          "sha256": "6fdea788a7bc860b16a5cfb45e571def755d107a060d6ae7126058ef0c49e288",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 64,
          "features": {
            "rms": 0.0755835316757585,
            "centroidHz": 331.9,
            "centroidVariationPercent": 0.3,
            "upperEnergyPercent": 0.01,
            "attackMs": 15.5
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://gitlab.com/echoparallax/a-sampled-celesta/-/raw/main/Samples/Celesta%20Tuned%20Denoised%20Mix.sf2?inline=false",
          "sampleIndex": 90,
          "sampleName": "G4 rr1L",
          "sourceUrl": "https://gitlab.com/echoparallax/a-sampled-celesta",
          "source": "echo~parallax / A Sampled Celesta (Mustel)",
          "license": "CC0",
          "label": "G4 rr1L; recorded, tuned and denoised; left microphone channel",
          "note": "G4",
          "sha256": "0cd0a7bfc4f54873ca53f05bfa5540d25df0c381f3c44baa73ad8f7cb02ae176",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 67,
          "features": {
            "rms": 0.19362079745258323,
            "centroidHz": 393.8,
            "centroidVariationPercent": 0,
            "upperEnergyPercent": 0,
            "attackMs": 18.2
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/celesta.png",
      "referenceSpectrum": "../timbre-atlas/celesta-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "glockenspiel",
      "name": "glockenspiel",
      "family": "glockenspiel",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-glockenspiel-1.0.0.mp3",
          "settingsSha256": "e8f8c23dc5f598d09f18be673d4eeb666b3363f5c1552a1fe1ab9eb2d06a921e",
          "image": "history-glockenspiel-1.0.0.png",
          "sha256": "894cbe59f38a4039c9b81b39f65180743b6e5a9b3ae4a9f29d3b2d3fb020b8e3"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-glockenspiel-1.1.0.mp3",
          "settingsSha256": "7bf75f83205f5eac8b54edaef51cc92edf4565f4fffa939528feccccf875510f",
          "image": "history-glockenspiel-1.1.0.png",
          "sha256": "37c034a47df1e3f6e6b83df8a53ca1b7d011ea02b618ebfa21a59123009a5b9f"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-glockenspiel-1.2.1.mp3",
          "settingsSha256": "7bf75f83205f5eac8b54edaef51cc92edf4565f4fffa939528feccccf875510f",
          "unchangedFrom": "1.1.0",
          "image": "history-glockenspiel-1.2.1.png",
          "sha256": "37c034a47df1e3f6e6b83df8a53ca1b7d011ea02b618ebfa21a59123009a5b9f"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-glockenspiel-1.3.0.mp3",
          "settingsSha256": "7bf75f83205f5eac8b54edaef51cc92edf4565f4fffa939528feccccf875510f",
          "unchangedFrom": "1.2.1",
          "image": "history-glockenspiel-1.3.0.png",
          "sha256": "37c034a47df1e3f6e6b83df8a53ca1b7d011ea02b618ebfa21a59123009a5b9f"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-glockenspiel-1.4.0.mp3",
          "settingsSha256": "7bf75f83205f5eac8b54edaef51cc92edf4565f4fffa939528feccccf875510f",
          "unchangedFrom": "1.3.0",
          "image": "history-glockenspiel-1.4.0.png",
          "sha256": "37c034a47df1e3f6e6b83df8a53ca1b7d011ea02b618ebfa21a59123009a5b9f"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-glockenspiel-3.5.0.mp3",
          "settingsSha256": "7bf75f83205f5eac8b54edaef51cc92edf4565f4fffa939528feccccf875510f",
          "unchangedFrom": "1.4.0",
          "image": "history-glockenspiel-3.5.0.png",
          "sha256": "37c034a47df1e3f6e6b83df8a53ca1b7d011ea02b618ebfa21a59123009a5b9f"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Idiophones/Struck%20Idiophones/Glockenspiel/glock_loud_C5_01.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Idiophones/Struck%20Idiophones/Glockenspiel/glock_loud_C5_01.wav",
          "license": "CC0",
          "label": "glock_loud_C5_01",
          "note": "C5",
          "sha256": "b28baea01b6028e061e5cc978fca70f9062af6a59d155b0fe55e54ec89f42c07",
          "noteOffset": 12,
          "inharmonic": true,
          "start": 0,
          "measuredMidi": 84,
          "features": {
            "rms": 0.005795109402945363,
            "centroidHz": 1552.5,
            "centroidVariationPercent": 39.4,
            "upperEnergyPercent": 9.5,
            "attackMs": 5.6
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Idiophones/Struck%20Idiophones/Glockenspiel/glock_medium_C5_01.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Idiophones/Struck%20Idiophones/Glockenspiel/glock_medium_C5_01.wav",
          "license": "CC0",
          "label": "glock_medium_C5_01",
          "note": "C5",
          "sha256": "635f898e0bcb6975b96b18efd9c896f6f1b97ff12174a339ada4814e49675660",
          "noteOffset": 12,
          "inharmonic": true,
          "start": 0,
          "measuredMidi": 84,
          "features": {
            "rms": 0.00414680816927955,
            "centroidHz": 1319.1,
            "centroidVariationPercent": 21.5,
            "upperEnergyPercent": 7.56,
            "attackMs": 10.2
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Idiophones/Struck%20Idiophones/Glockenspiel/glock_soft_C5_02.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Idiophones/Struck%20Idiophones/Glockenspiel/glock_soft_C5_02.wav",
          "license": "CC0",
          "label": "glock_soft_C5_02",
          "note": "C5",
          "sha256": "4fa149e6f224557df5fab98ad660a8f192bc6fbf2556077dd1089509bf4424e2",
          "noteOffset": 12,
          "inharmonic": true,
          "start": 0,
          "measuredMidi": 84,
          "features": {
            "rms": 0.0025487737865537373,
            "centroidHz": 1056,
            "centroidVariationPercent": 0.4,
            "upperEnergyPercent": 0.14,
            "attackMs": 22
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/glockenspiel.png",
      "referenceSpectrum": "../timbre-atlas/glockenspiel-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "music-box-1",
      "name": "music box 1",
      "family": "music-box",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20.360217617098773,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-music-box-1-1.0.0.mp3",
          "settingsSha256": "5f093da0169a73823522805441ad490fa0ebd744f4d284cf2eb300a511c050e0",
          "image": "history-music-box-1-1.0.0.png",
          "sha256": "a61c15f16e43a9299371ee88b66c5ce23d6a47f4ede4be18d33e251a6a34cca0"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-music-box-1-1.1.0.mp3",
          "settingsSha256": "3f1d3ca04f77d9f826d726cb1624aea0bb6816fd09f61e3b3519555aa094a867",
          "image": "history-music-box-1-1.1.0.png",
          "sha256": "aae358acff7f12e75ba3bbc407d2098fa1ebf9487feeb41eb719d2e154bf9c3a"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-music-box-1-1.2.1.mp3",
          "settingsSha256": "5eff9e7d85db9e843d16ab4a887b0327263439ef375456838a181c94c769ffa8",
          "unchangedFrom": "1.1.0",
          "image": "history-music-box-1-1.2.1.png",
          "sha256": "aae358acff7f12e75ba3bbc407d2098fa1ebf9487feeb41eb719d2e154bf9c3a"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-music-box-1-1.3.0.mp3",
          "settingsSha256": "5eff9e7d85db9e843d16ab4a887b0327263439ef375456838a181c94c769ffa8",
          "unchangedFrom": "1.2.1",
          "image": "history-music-box-1-1.3.0.png",
          "sha256": "aae358acff7f12e75ba3bbc407d2098fa1ebf9487feeb41eb719d2e154bf9c3a"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-music-box-1-1.4.0.mp3",
          "settingsSha256": "5eff9e7d85db9e843d16ab4a887b0327263439ef375456838a181c94c769ffa8",
          "unchangedFrom": "1.3.0",
          "image": "history-music-box-1-1.4.0.png",
          "sha256": "aae358acff7f12e75ba3bbc407d2098fa1ebf9487feeb41eb719d2e154bf9c3a"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-music-box-1-3.5.0.mp3",
          "settingsSha256": "5eff9e7d85db9e843d16ab4a887b0327263439ef375456838a181c94c769ffa8",
          "unchangedFrom": "1.4.0",
          "image": "history-music-box-1-3.5.0.png",
          "sha256": "aae358acff7f12e75ba3bbc407d2098fa1ebf9487feeb41eb719d2e154bf9c3a"
        }
      ],
      "references": [
        {
          "url": "https://cdn.freesound.org/previews/218/218459_3344538-hq.mp3",
          "sourceUrl": "https://freesound.org/people/thomasjaunism/sounds/218459/",
          "source": "Freesound - Music box note by thomasjaunism",
          "license": "CC0",
          "label": "Freesound - Music box note by thomasjaunism; compressed preview",
          "note": null,
          "sha256": "ddf9f9927b7d662c144c7866c5f166a2721d8228f940e20d102ad761ea52c40d",
          "noteOffset": 0,
          "estimatePitch": true,
          "start": 0,
          "measuredMidi": 78,
          "features": {
            "rms": 0.11247327646576677,
            "centroidHz": 1486,
            "centroidVariationPercent": 0.3,
            "upperEnergyPercent": 0.01,
            "attackMs": 7.1
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/music-box-1.png",
      "referenceSpectrum": "../timbre-atlas/music-box-1-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "music-box-2",
      "name": "music box 2",
      "family": "music-box",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-music-box-2-1.0.0.mp3",
          "settingsSha256": "3b71f40bb6d7a829a6b6a906ceef609eeca450353c054e24075245ef2341139f",
          "image": "history-music-box-2-1.0.0.png",
          "sha256": "3175555bddfbbcea05fcfc05bf38f6b57bff76d3bf1ab631a3e799ea3393f48c"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-music-box-2-1.1.0.mp3",
          "settingsSha256": "2608bb10858541553537951a95683ec310dca7e32587a75ec20812b880fad6f5",
          "image": "history-music-box-2-1.1.0.png",
          "sha256": "51e0d09308e24099ae3cf374e607f9a2d185b95463247713ed2895a71de6ea9c"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-music-box-2-1.2.1.mp3",
          "settingsSha256": "c500b03c0a68e6216da0e6f630ac06e1b1fb1a24f64c2c78a0b66103dadfdce4",
          "unchangedFrom": "1.1.0",
          "image": "history-music-box-2-1.2.1.png",
          "sha256": "51e0d09308e24099ae3cf374e607f9a2d185b95463247713ed2895a71de6ea9c"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-music-box-2-1.3.0.mp3",
          "settingsSha256": "c500b03c0a68e6216da0e6f630ac06e1b1fb1a24f64c2c78a0b66103dadfdce4",
          "unchangedFrom": "1.2.1",
          "image": "history-music-box-2-1.3.0.png",
          "sha256": "51e0d09308e24099ae3cf374e607f9a2d185b95463247713ed2895a71de6ea9c"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-music-box-2-1.4.0.mp3",
          "settingsSha256": "c500b03c0a68e6216da0e6f630ac06e1b1fb1a24f64c2c78a0b66103dadfdce4",
          "unchangedFrom": "1.3.0",
          "image": "history-music-box-2-1.4.0.png",
          "sha256": "51e0d09308e24099ae3cf374e607f9a2d185b95463247713ed2895a71de6ea9c"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-music-box-2-3.5.0.mp3",
          "settingsSha256": "c500b03c0a68e6216da0e6f630ac06e1b1fb1a24f64c2c78a0b66103dadfdce4",
          "unchangedFrom": "1.4.0",
          "image": "history-music-box-2-3.5.0.png",
          "sha256": "51e0d09308e24099ae3cf374e607f9a2d185b95463247713ed2895a71de6ea9c"
        }
      ],
      "references": [
        {
          "url": "https://cdn.freesound.org/previews/218/218459_3344538-hq.mp3",
          "sourceUrl": "https://freesound.org/people/thomasjaunism/sounds/218459/",
          "source": "Freesound - Music box note by thomasjaunism",
          "license": "CC0",
          "label": "Freesound - Music box note by thomasjaunism; compressed preview",
          "note": null,
          "sha256": "ddf9f9927b7d662c144c7866c5f166a2721d8228f940e20d102ad761ea52c40d",
          "noteOffset": 0,
          "estimatePitch": true,
          "start": 0,
          "measuredMidi": 78,
          "features": {
            "rms": 0.11247327646576677,
            "centroidHz": 1486,
            "centroidVariationPercent": 0.3,
            "upperEnergyPercent": 0.01,
            "attackMs": 7.1
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/music-box-2.png",
      "referenceSpectrum": "../timbre-atlas/music-box-2-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "vibraphone",
      "name": "vibraphone",
      "family": "vibraphone",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-vibraphone-1.0.0.mp3",
          "settingsSha256": "ba7a2ca7823124113acc2761cb7c87a1be744813cc6f6cc9fc25c1a5af2b231b",
          "image": "history-vibraphone-1.0.0.png",
          "sha256": "3e3bed679d1e55a2ac746743f979b83a74fe348fc3782c06c0faf41fc239865e"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-vibraphone-1.1.0.mp3",
          "settingsSha256": "8a57a8e5fbca4d96d5ed3e8b3e4e6ed3e50e29e3a5a4a5235b58a5d333c42642",
          "image": "history-vibraphone-1.1.0.png",
          "sha256": "319970fa46e9dd8c0e163f4e488e56b1586c1b7ed9a2c2d605ad0e57a2b72149"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-vibraphone-1.2.1.mp3",
          "settingsSha256": "8a57a8e5fbca4d96d5ed3e8b3e4e6ed3e50e29e3a5a4a5235b58a5d333c42642",
          "unchangedFrom": "1.1.0",
          "image": "history-vibraphone-1.2.1.png",
          "sha256": "319970fa46e9dd8c0e163f4e488e56b1586c1b7ed9a2c2d605ad0e57a2b72149"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-vibraphone-1.3.0.mp3",
          "settingsSha256": "8a57a8e5fbca4d96d5ed3e8b3e4e6ed3e50e29e3a5a4a5235b58a5d333c42642",
          "unchangedFrom": "1.2.1",
          "image": "history-vibraphone-1.3.0.png",
          "sha256": "319970fa46e9dd8c0e163f4e488e56b1586c1b7ed9a2c2d605ad0e57a2b72149"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-vibraphone-1.4.0.mp3",
          "settingsSha256": "8a57a8e5fbca4d96d5ed3e8b3e4e6ed3e50e29e3a5a4a5235b58a5d333c42642",
          "unchangedFrom": "1.3.0",
          "image": "history-vibraphone-1.4.0.png",
          "sha256": "319970fa46e9dd8c0e163f4e488e56b1586c1b7ed9a2c2d605ad0e57a2b72149"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-vibraphone-3.5.0.mp3",
          "settingsSha256": "8a57a8e5fbca4d96d5ed3e8b3e4e6ed3e50e29e3a5a4a5235b58a5d333c42642",
          "unchangedFrom": "1.4.0",
          "image": "history-vibraphone-3.5.0.png",
          "sha256": "319970fa46e9dd8c0e163f4e488e56b1586c1b7ed9a2c2d605ad0e57a2b72149"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Idiophones/Struck%20Idiophones/Vibraphone/Hard%20Mallets/Vibes_hard_C3_v2_rr1_Main.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Idiophones/Struck%20Idiophones/Vibraphone/Hard%20Mallets/Vibes_hard_C3_v2_rr1_Main.wav",
          "license": "CC0",
          "label": "Vibes_hard_C3_v2_rr1_Main",
          "note": "C3",
          "sha256": "26082761ea9b12fbe06d38bd4ea2826143958c29786948e50649e0478041b0fc",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.0174779599036709,
            "centroidHz": 460.5,
            "centroidVariationPercent": 74.2,
            "upperEnergyPercent": 7.88,
            "attackMs": 10.2
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Idiophones/Struck%20Idiophones/Vibraphone/Hard%20Mallets/Vibes_hard_C3_v3_rr1_Main.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Idiophones/Struck%20Idiophones/Vibraphone/Hard%20Mallets/Vibes_hard_C3_v3_rr1_Main.wav",
          "license": "CC0",
          "label": "Vibes_hard_C3_v3_rr1_Main",
          "note": "C3",
          "sha256": "1e4c472f6630be1b0c4ff1e8a63ad61d2c1dc561bd764fedaf87e8e46bdd706d",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.04951105654030299,
            "centroidHz": 717.4,
            "centroidVariationPercent": 104.9,
            "upperEnergyPercent": 18.38,
            "attackMs": 11
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Idiophones/Struck%20Idiophones/Vibraphone/Soft%20Mallets/Vibes_soft_C3_v1_rr2_Main.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Idiophones/Struck%20Idiophones/Vibraphone/Soft%20Mallets/Vibes_soft_C3_v1_rr2_Main.wav",
          "license": "CC0",
          "label": "Vibes_soft_C3_v1_rr2_Main",
          "note": "C3",
          "sha256": "1dda9a4c3205c365345d66dcb68c8e09c0dca76a310b8fe8108e43c7e8c1cd0a",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.015097068264603995,
            "centroidHz": 261.7,
            "centroidVariationPercent": 0.1,
            "upperEnergyPercent": 0,
            "attackMs": 125.1
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/vibraphone.png",
      "referenceSpectrum": "../timbre-atlas/vibraphone-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "marimba",
      "name": "marimba",
      "family": "marimba",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-marimba-1.0.0.mp3",
          "settingsSha256": "1c6d24ed1c6d0a6b2024b45661120e3efb771f70107ee9059d12f087aafed354",
          "image": "history-marimba-1.0.0.png",
          "sha256": "873c5139847144dbdfac6e9d31609217a09969fe7dc4251da6a351267e1d56e3"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-marimba-1.1.0.mp3",
          "settingsSha256": "d1f2c1a6918507279346689701037fdcb265739953ebd46808ec5b7a16de1058",
          "image": "history-marimba-1.1.0.png",
          "sha256": "b7ce9cd3f53eade8e9ffe16df71e34b5733a7afd419e04b1a4cc8542d7732fef"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-marimba-1.2.1.mp3",
          "settingsSha256": "d1f2c1a6918507279346689701037fdcb265739953ebd46808ec5b7a16de1058",
          "unchangedFrom": "1.1.0",
          "image": "history-marimba-1.2.1.png",
          "sha256": "b7ce9cd3f53eade8e9ffe16df71e34b5733a7afd419e04b1a4cc8542d7732fef"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-marimba-1.3.0.mp3",
          "settingsSha256": "d1f2c1a6918507279346689701037fdcb265739953ebd46808ec5b7a16de1058",
          "unchangedFrom": "1.2.1",
          "image": "history-marimba-1.3.0.png",
          "sha256": "b7ce9cd3f53eade8e9ffe16df71e34b5733a7afd419e04b1a4cc8542d7732fef"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-marimba-1.4.0.mp3",
          "settingsSha256": "d1f2c1a6918507279346689701037fdcb265739953ebd46808ec5b7a16de1058",
          "unchangedFrom": "1.3.0",
          "image": "history-marimba-1.4.0.png",
          "sha256": "b7ce9cd3f53eade8e9ffe16df71e34b5733a7afd419e04b1a4cc8542d7732fef"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-marimba-3.5.0.mp3",
          "settingsSha256": "d1f2c1a6918507279346689701037fdcb265739953ebd46808ec5b7a16de1058",
          "unchangedFrom": "1.4.0",
          "image": "history-marimba-3.5.0.png",
          "sha256": "b7ce9cd3f53eade8e9ffe16df71e34b5733a7afd419e04b1a4cc8542d7732fef"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Idiophones/Struck%20Idiophones/Marimba/Marimba_hit_Outrigger_C4_loud_01.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Idiophones/Struck%20Idiophones/Marimba/Marimba_hit_Outrigger_C4_loud_01.wav",
          "license": "CC0",
          "label": "Marimba_hit_Outrigger_C4_loud_01",
          "note": "C4",
          "sha256": "4af539d47a452d7fad26e171b1c8adcca272cee97191f040d192680462c880b8",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.013188608058965356,
            "centroidHz": 531.2,
            "centroidVariationPercent": 1.2,
            "upperEnergyPercent": 0.43,
            "attackMs": 10.8
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Idiophones/Struck%20Idiophones/Marimba/Marimba_hit_Outrigger_C4_med_01.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Idiophones/Struck%20Idiophones/Marimba/Marimba_hit_Outrigger_C4_med_01.wav",
          "license": "CC0",
          "label": "Marimba_hit_Outrigger_C4_med_01",
          "note": "C4",
          "sha256": "3e88c006eef05e8f7891f8f6027042006199a4ec3b53a0ad7308f9782a52d4df",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.003992963594915567,
            "centroidHz": 523.6,
            "centroidVariationPercent": 0.2,
            "upperEnergyPercent": 0.01,
            "attackMs": 32.3
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Idiophones/Struck%20Idiophones/Marimba/Marimba_hit_Outrigger_C4_soft_01.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Idiophones/Struck%20Idiophones/Marimba/Marimba_hit_Outrigger_C4_soft_01.wav",
          "license": "CC0",
          "label": "Marimba_hit_Outrigger_C4_soft_01",
          "note": "C4",
          "sha256": "4d03d005166e8b366e6a983b7a4a89e0847e1d58a6d34dda35ddf74289cace94",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.0009518031558051463,
            "centroidHz": 522.2,
            "centroidVariationPercent": 0.5,
            "upperEnergyPercent": 0,
            "attackMs": 32.4
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/marimba.png",
      "referenceSpectrum": "../timbre-atlas/marimba-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "kalimba",
      "name": "kalimba",
      "family": "kalimba",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-kalimba-1.0.0.mp3",
          "settingsSha256": "26708fe6c23e6ba753c8058163b55bf4f793bff8d67bd58a5ed601aa4fe5e514",
          "image": "history-kalimba-1.0.0.png",
          "sha256": "94865d3661abe888ce2524d618fdaf6d9c6bc5a74938125d46459534f7026e4a"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-kalimba-1.1.0.mp3",
          "settingsSha256": "c367d108a473189402cc82166e3bc6d6ef5c39fa38f103fb16e06913dd7fb448",
          "image": "history-kalimba-1.1.0.png",
          "sha256": "b57e3108b385af181d21ce42d538703acb179e7d1e3cea74cdfd171145d35282"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-kalimba-1.2.1.mp3",
          "settingsSha256": "c367d108a473189402cc82166e3bc6d6ef5c39fa38f103fb16e06913dd7fb448",
          "unchangedFrom": "1.1.0",
          "image": "history-kalimba-1.2.1.png",
          "sha256": "b57e3108b385af181d21ce42d538703acb179e7d1e3cea74cdfd171145d35282"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-kalimba-1.3.0.mp3",
          "settingsSha256": "c367d108a473189402cc82166e3bc6d6ef5c39fa38f103fb16e06913dd7fb448",
          "unchangedFrom": "1.2.1",
          "image": "history-kalimba-1.3.0.png",
          "sha256": "b57e3108b385af181d21ce42d538703acb179e7d1e3cea74cdfd171145d35282"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-kalimba-1.4.0.mp3",
          "settingsSha256": "c367d108a473189402cc82166e3bc6d6ef5c39fa38f103fb16e06913dd7fb448",
          "unchangedFrom": "1.3.0",
          "image": "history-kalimba-1.4.0.png",
          "sha256": "b57e3108b385af181d21ce42d538703acb179e7d1e3cea74cdfd171145d35282"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-kalimba-3.5.0.mp3",
          "settingsSha256": "c367d108a473189402cc82166e3bc6d6ef5c39fa38f103fb16e06913dd7fb448",
          "unchangedFrom": "1.4.0",
          "image": "history-kalimba-3.5.0.png",
          "sha256": "b57e3108b385af181d21ce42d538703acb179e7d1e3cea74cdfd171145d35282"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Idiophones/Plucked%20Idiophones/Kalimba%2C%20Kenya/Mbira6_Normal_MainSpirit_A4_k1_vl3_rr2.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Idiophones/Plucked%20Idiophones/Kalimba%2C%20Kenya/Mbira6_Normal_MainSpirit_A4_k1_vl3_rr2.wav",
          "license": "CC0",
          "label": "Mbira6_Normal_MainSpirit_A4_k1_vl3_rr2",
          "note": "A4",
          "sha256": "153c55100dc25cdbec013b1153018e78fa094e5c0ee0b9f050ee57c2b198a500",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 80,
          "features": {
            "rms": 0.018386468490806725,
            "centroidHz": 853.9,
            "centroidVariationPercent": 3,
            "upperEnergyPercent": 0.47,
            "attackMs": 4.7
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Idiophones/Plucked%20Idiophones/Kalimba%2C%20Kenya/Mbira6_Normal_MainSpirit_B4_k15_vl3_rr2.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Idiophones/Plucked%20Idiophones/Kalimba%2C%20Kenya/Mbira6_Normal_MainSpirit_B4_k15_vl3_rr2.wav",
          "license": "CC0",
          "label": "Mbira6_Normal_MainSpirit_B4_k15_vl3_rr2",
          "note": "B4",
          "sha256": "b26d42ab0fe80fd54ec8cfb1cea72ef26cd07ef2dae914e1ffa00471a05f1698",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 83,
          "features": {
            "rms": 0.02844203970010011,
            "centroidHz": 720.4,
            "centroidVariationPercent": 12.4,
            "upperEnergyPercent": 2.99,
            "attackMs": 2.7
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Idiophones/Plucked%20Idiophones/Kalimba%2C%20Kenya/Mbira6_Normal_MainSpirit_B2_k8_vl3_rr2.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Idiophones/Plucked%20Idiophones/Kalimba%2C%20Kenya/Mbira6_Normal_MainSpirit_B2_k8_vl3_rr2.wav",
          "license": "CC0",
          "label": "Mbira6_Normal_MainSpirit_B2_k8_vl3_rr2",
          "note": "B2",
          "sha256": "b4bd2db5c868be7398e2028ec818a3edc3979e49df620f2250b786f2e45b3905",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 59,
          "features": {
            "rms": 0.013663910169626804,
            "centroidHz": 281.3,
            "centroidVariationPercent": 6.6,
            "upperEnergyPercent": 0.14,
            "attackMs": 4.6
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/kalimba.png",
      "referenceSpectrum": "../timbre-atlas/kalimba-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "xylophone",
      "name": "xylophone",
      "family": "xylophone",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -24.457189789008854,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-xylophone-1.0.0.mp3",
          "settingsSha256": "aace05edd7612cf1fcf783bff59dbaaaf090a4d8457c5fea9776abecc5fc8d19",
          "image": "history-xylophone-1.0.0.png",
          "sha256": "8dae72bf9deeaf985dfad7021c138f7f0d78637c4126979b303997f5d44dfcb8"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-xylophone-1.1.0.mp3",
          "settingsSha256": "d82b71ad3d38550635ac32264b0d5a9e425ee41e66b1bae5fd21e417f54c9bf3",
          "image": "history-xylophone-1.1.0.png",
          "sha256": "22e208f273ec1af50f44e33c06b369bb8f9801b0ed30dad0652a28529833fb50"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-xylophone-1.2.1.mp3",
          "settingsSha256": "d82b71ad3d38550635ac32264b0d5a9e425ee41e66b1bae5fd21e417f54c9bf3",
          "unchangedFrom": "1.1.0",
          "image": "history-xylophone-1.2.1.png",
          "sha256": "22e208f273ec1af50f44e33c06b369bb8f9801b0ed30dad0652a28529833fb50"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-xylophone-1.3.0.mp3",
          "settingsSha256": "d82b71ad3d38550635ac32264b0d5a9e425ee41e66b1bae5fd21e417f54c9bf3",
          "unchangedFrom": "1.2.1",
          "image": "history-xylophone-1.3.0.png",
          "sha256": "22e208f273ec1af50f44e33c06b369bb8f9801b0ed30dad0652a28529833fb50"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-xylophone-1.4.0.mp3",
          "settingsSha256": "d82b71ad3d38550635ac32264b0d5a9e425ee41e66b1bae5fd21e417f54c9bf3",
          "unchangedFrom": "1.3.0",
          "image": "history-xylophone-1.4.0.png",
          "sha256": "22e208f273ec1af50f44e33c06b369bb8f9801b0ed30dad0652a28529833fb50"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-xylophone-3.5.0.mp3",
          "settingsSha256": "d82b71ad3d38550635ac32264b0d5a9e425ee41e66b1bae5fd21e417f54c9bf3",
          "unchangedFrom": "1.4.0",
          "image": "history-xylophone-3.5.0.png",
          "sha256": "22e208f273ec1af50f44e33c06b369bb8f9801b0ed30dad0652a28529833fb50"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Idiophones/Struck%20Idiophones/Xylophone/Hard%20Mallets/Xylo_Hard_C4_ff_01_far.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Idiophones/Struck%20Idiophones/Xylophone/Hard%20Mallets/Xylo_Hard_C4_ff_01_far.wav",
          "license": "CC0",
          "label": "Xylo_Hard_C4_ff_01_far",
          "note": "C4",
          "sha256": "8623db2b2d56b30e8ed6f054713eeebb6403c1da39312fe15737d66a9735619a",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.055984215828388445,
            "centroidHz": 583.9,
            "centroidVariationPercent": 7.4,
            "upperEnergyPercent": 1.65,
            "attackMs": 7.8
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Idiophones/Struck%20Idiophones/Xylophone/Hard%20Mallets/Xylo_Hard_C4_pp_01_far.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Idiophones/Struck%20Idiophones/Xylophone/Hard%20Mallets/Xylo_Hard_C4_pp_01_far.wav",
          "license": "CC0",
          "label": "Xylo_Hard_C4_pp_01_far",
          "note": "C4",
          "sha256": "879ab914843325ad4b75b2137c54f34882b34c5a1bf5c3cd063fe2866aaf75aa",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.03446850259463748,
            "centroidHz": 591.1,
            "centroidVariationPercent": 9.8,
            "upperEnergyPercent": 1.92,
            "attackMs": 6.8
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Idiophones/Struck%20Idiophones/Xylophone/Medium%20Mallets/Xylo_Medium_C4_ff_01_far.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Idiophones/Struck%20Idiophones/Xylophone/Medium%20Mallets/Xylo_Medium_C4_ff_01_far.wav",
          "license": "CC0",
          "label": "Xylo_Medium_C4_ff_01_far",
          "note": "C4",
          "sha256": "ef8650516f0734369c5f409f726315db13544e508f59cb82cf46f4206c10518d",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.06557450451684875,
            "centroidHz": 538.7,
            "centroidVariationPercent": 1.5,
            "upperEnergyPercent": 0.38,
            "attackMs": 7
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/xylophone.png",
      "referenceSpectrum": "../timbre-atlas/xylophone-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "tubular-bell",
      "name": "tubular bell",
      "family": "tubular-bell",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -21.502508600444777,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-tubular-bell-1.0.0.mp3",
          "settingsSha256": "b3ce8ca31d6bc4d00b82e7db651b60bf3b0819e984b3e5e89a9ce3d444e2a8c7",
          "image": "history-tubular-bell-1.0.0.png",
          "sha256": "ef65722c5c2d8e7d46680057070e5015554a6bef1db8cd36e426417e32f14ead"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-tubular-bell-1.1.0.mp3",
          "settingsSha256": "294d9a808492f1e445f27c746438e9841ab512754f3fee40c1025a427d0c7744",
          "image": "history-tubular-bell-1.1.0.png",
          "sha256": "c629fea5c6202a73cae1ba986501f65b62f57b3769411f2fed151f39a81b4608"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-tubular-bell-1.2.1.mp3",
          "settingsSha256": "c0e7ec34184f999fcf9113ee8378e2b36932e472d0d6f64b9318a9bf15eaf032",
          "unchangedFrom": "1.1.0",
          "image": "history-tubular-bell-1.2.1.png",
          "sha256": "c629fea5c6202a73cae1ba986501f65b62f57b3769411f2fed151f39a81b4608"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-tubular-bell-1.3.0.mp3",
          "settingsSha256": "c0e7ec34184f999fcf9113ee8378e2b36932e472d0d6f64b9318a9bf15eaf032",
          "unchangedFrom": "1.2.1",
          "image": "history-tubular-bell-1.3.0.png",
          "sha256": "c629fea5c6202a73cae1ba986501f65b62f57b3769411f2fed151f39a81b4608"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-tubular-bell-1.4.0.mp3",
          "settingsSha256": "c0e7ec34184f999fcf9113ee8378e2b36932e472d0d6f64b9318a9bf15eaf032",
          "unchangedFrom": "1.3.0",
          "image": "history-tubular-bell-1.4.0.png",
          "sha256": "c629fea5c6202a73cae1ba986501f65b62f57b3769411f2fed151f39a81b4608"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-tubular-bell-3.5.0.mp3",
          "settingsSha256": "c0e7ec34184f999fcf9113ee8378e2b36932e472d0d6f64b9318a9bf15eaf032",
          "unchangedFrom": "1.4.0",
          "image": "history-tubular-bell-3.5.0.png",
          "sha256": "c629fea5c6202a73cae1ba986501f65b62f57b3769411f2fed151f39a81b4608"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Idiophones/Struck%20Idiophones/Tubular%20Bells%201/chimes_C4_ff_rr2.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Idiophones/Struck%20Idiophones/Tubular%20Bells%201/chimes_C4_ff_rr2.wav",
          "license": "CC0",
          "label": "chimes_C4_ff_rr2",
          "note": "C4",
          "sha256": "50d2c2bff54396a684ce9b29346bb8d43bb55d5d9adb9d736bdd5a713adc424a",
          "noteOffset": 12,
          "inharmonic": true,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.08383785615744666,
            "centroidHz": 1715.5,
            "centroidVariationPercent": 19.5,
            "upperEnergyPercent": 27.98,
            "attackMs": 12.2
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Idiophones/Struck%20Idiophones/Tubular%20Bells%201/chimes_C4_p_rr1.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Idiophones/Struck%20Idiophones/Tubular%20Bells%201/chimes_C4_p_rr1.wav",
          "license": "CC0",
          "label": "chimes_C4_p_rr1",
          "note": "C4",
          "sha256": "c0f357155823646012c5d86628eedf122f162f813bfeed7337e72bf1a8d37c63",
          "noteOffset": 12,
          "inharmonic": true,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.020506625749050395,
            "centroidHz": 1096.2,
            "centroidVariationPercent": 2.4,
            "upperEnergyPercent": 0.32,
            "attackMs": 8.7
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Idiophones/Struck%20Idiophones/Tubular%20Bells%201/chimes_A%233_ff_rr1.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Idiophones/Struck%20Idiophones/Tubular%20Bells%201/chimes_A%233_ff_rr1.wav",
          "license": "CC0",
          "label": "chimes_A#3_ff_rr1",
          "note": "A#3",
          "sha256": "55fcfdb825026629670e3486f47762e6a3c4a89e138990fbd0e65c3f0a1d6a79",
          "noteOffset": 12,
          "inharmonic": true,
          "start": 0,
          "measuredMidi": 70,
          "features": {
            "rms": 0.08041483475263687,
            "centroidHz": 1311.2,
            "centroidVariationPercent": 16.3,
            "upperEnergyPercent": 5.75,
            "attackMs": 24
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/tubular-bell.png",
      "referenceSpectrum": "../timbre-atlas/tubular-bell-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "tinkle-bell",
      "name": "tinkle bell",
      "family": "glockenspiel",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-tinkle-bell-1.0.0.mp3",
          "settingsSha256": "78d97abbe37b347c35def2ccda469e98a327f72f89d2de712eb76e32815566a5",
          "image": "history-tinkle-bell-1.0.0.png",
          "sha256": "5cefe1dc74b996cc34cd8952227159388ad4ae9a2056efb74f9d966d17feca0d"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-tinkle-bell-1.1.0.mp3",
          "settingsSha256": "c290599632394c750b00a0c0aa9a5c6332ec81b5e12101029896c2657e9aff49",
          "image": "history-tinkle-bell-1.1.0.png",
          "sha256": "8fbe9bf794b3d68ec20a15ad0d860d265daf577028e34c5fbd46fa1f0f1ba6ce"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-tinkle-bell-1.2.1.mp3",
          "settingsSha256": "c290599632394c750b00a0c0aa9a5c6332ec81b5e12101029896c2657e9aff49",
          "unchangedFrom": "1.1.0",
          "image": "history-tinkle-bell-1.2.1.png",
          "sha256": "8fbe9bf794b3d68ec20a15ad0d860d265daf577028e34c5fbd46fa1f0f1ba6ce"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-tinkle-bell-1.3.0.mp3",
          "settingsSha256": "c290599632394c750b00a0c0aa9a5c6332ec81b5e12101029896c2657e9aff49",
          "unchangedFrom": "1.2.1",
          "image": "history-tinkle-bell-1.3.0.png",
          "sha256": "8fbe9bf794b3d68ec20a15ad0d860d265daf577028e34c5fbd46fa1f0f1ba6ce"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-tinkle-bell-1.4.0.mp3",
          "settingsSha256": "c290599632394c750b00a0c0aa9a5c6332ec81b5e12101029896c2657e9aff49",
          "unchangedFrom": "1.3.0",
          "image": "history-tinkle-bell-1.4.0.png",
          "sha256": "8fbe9bf794b3d68ec20a15ad0d860d265daf577028e34c5fbd46fa1f0f1ba6ce"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-tinkle-bell-3.5.0.mp3",
          "settingsSha256": "c290599632394c750b00a0c0aa9a5c6332ec81b5e12101029896c2657e9aff49",
          "unchangedFrom": "1.4.0",
          "image": "history-tinkle-bell-3.5.0.png",
          "sha256": "8fbe9bf794b3d68ec20a15ad0d860d265daf577028e34c5fbd46fa1f0f1ba6ce"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Idiophones/Struck%20Idiophones/Glockenspiel/glock_loud_C5_01.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Idiophones/Struck%20Idiophones/Glockenspiel/glock_loud_C5_01.wav",
          "license": "CC0",
          "label": "glock_loud_C5_01",
          "note": "C5",
          "sha256": "b28baea01b6028e061e5cc978fca70f9062af6a59d155b0fe55e54ec89f42c07",
          "noteOffset": 12,
          "inharmonic": true,
          "start": 0,
          "measuredMidi": 84,
          "features": {
            "rms": 0.005795109402945363,
            "centroidHz": 1552.5,
            "centroidVariationPercent": 39.4,
            "upperEnergyPercent": 9.5,
            "attackMs": 5.6
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Idiophones/Struck%20Idiophones/Glockenspiel/glock_medium_C5_01.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Idiophones/Struck%20Idiophones/Glockenspiel/glock_medium_C5_01.wav",
          "license": "CC0",
          "label": "glock_medium_C5_01",
          "note": "C5",
          "sha256": "635f898e0bcb6975b96b18efd9c896f6f1b97ff12174a339ada4814e49675660",
          "noteOffset": 12,
          "inharmonic": true,
          "start": 0,
          "measuredMidi": 84,
          "features": {
            "rms": 0.00414680816927955,
            "centroidHz": 1319.1,
            "centroidVariationPercent": 21.5,
            "upperEnergyPercent": 7.56,
            "attackMs": 10.2
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Idiophones/Struck%20Idiophones/Glockenspiel/glock_soft_C5_02.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Idiophones/Struck%20Idiophones/Glockenspiel/glock_soft_C5_02.wav",
          "license": "CC0",
          "label": "glock_soft_C5_02",
          "note": "C5",
          "sha256": "4fa149e6f224557df5fab98ad660a8f192bc6fbf2556077dd1089509bf4424e2",
          "noteOffset": 12,
          "inharmonic": true,
          "start": 0,
          "measuredMidi": 84,
          "features": {
            "rms": 0.0025487737865537373,
            "centroidHz": 1056,
            "centroidVariationPercent": 0.4,
            "upperEnergyPercent": 0.14,
            "attackMs": 22
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/tinkle-bell.png",
      "referenceSpectrum": "../timbre-atlas/tinkle-bell-spectrum.png",
      "coverage": "related",
      "contextual": false
    },
    {
      "id": "agogo",
      "name": "agogo",
      "family": "agogo",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -22.493862502158276,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-agogo-1.0.0.mp3",
          "settingsSha256": "bc906b174aa08bc5adb79ee19b2a053dbd5b172f2e99c047ee3feaa63135ab9e",
          "image": "history-agogo-1.0.0.png",
          "sha256": "0d527d21101f6011e66a87d2ce82cd723cbd43b4260a0484c6f67ab61d8b73d4"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-agogo-1.1.0.mp3",
          "settingsSha256": "8407a2c9710543baca2109136c20c53da97735efb90ee9915c542344f64d8aae",
          "image": "history-agogo-1.1.0.png",
          "sha256": "c43ec8fd1009198012371f4f71c06e7eddea3239b522bce0c96534186cc3f9fd"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-agogo-1.2.1.mp3",
          "settingsSha256": "8407a2c9710543baca2109136c20c53da97735efb90ee9915c542344f64d8aae",
          "unchangedFrom": "1.1.0",
          "image": "history-agogo-1.2.1.png",
          "sha256": "c43ec8fd1009198012371f4f71c06e7eddea3239b522bce0c96534186cc3f9fd"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-agogo-1.3.0.mp3",
          "settingsSha256": "8407a2c9710543baca2109136c20c53da97735efb90ee9915c542344f64d8aae",
          "unchangedFrom": "1.2.1",
          "image": "history-agogo-1.3.0.png",
          "sha256": "c43ec8fd1009198012371f4f71c06e7eddea3239b522bce0c96534186cc3f9fd"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-agogo-1.4.0.mp3",
          "settingsSha256": "8407a2c9710543baca2109136c20c53da97735efb90ee9915c542344f64d8aae",
          "unchangedFrom": "1.3.0",
          "image": "history-agogo-1.4.0.png",
          "sha256": "c43ec8fd1009198012371f4f71c06e7eddea3239b522bce0c96534186cc3f9fd"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-agogo-3.5.0.mp3",
          "settingsSha256": "8407a2c9710543baca2109136c20c53da97735efb90ee9915c542344f64d8aae",
          "unchangedFrom": "1.4.0",
          "image": "history-agogo-3.5.0.png",
          "sha256": "c43ec8fd1009198012371f4f71c06e7eddea3239b522bce0c96534186cc3f9fd"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Idiophones/Struck%20Idiophones/Agogo%20Bells/Agogo_High_v1_rr1_Mid.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Idiophones/Struck%20Idiophones/Agogo%20Bells/Agogo_High_v1_rr1_Mid.wav",
          "license": "CC0",
          "label": "Agogo_High_v1_rr1_Mid",
          "note": null,
          "sha256": "a319d68b2e38304d063531b2a152194871623bbce0dc55a870c0ab45570cbbdf",
          "noteOffset": 12,
          "inharmonic": true,
          "start": 0,
          "measuredMidi": null,
          "features": {
            "rms": 0.000931339732126282,
            "centroidHz": 2898.8,
            "centroidVariationPercent": 3.8,
            "upperEnergyPercent": 64.13,
            "attackMs": 11.8
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Idiophones/Struck%20Idiophones/Agogo%20Bells/Agogo_High_v2_rr1_Mid.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Idiophones/Struck%20Idiophones/Agogo%20Bells/Agogo_High_v2_rr1_Mid.wav",
          "license": "CC0",
          "label": "Agogo_High_v2_rr1_Mid",
          "note": null,
          "sha256": "f74a3100634a4372f2e2f81adf2f6a7839861ec4dcf13291001a3268e37806de",
          "noteOffset": 12,
          "inharmonic": true,
          "start": 0,
          "measuredMidi": null,
          "features": {
            "rms": 0.0034250058205972903,
            "centroidHz": 3310.4,
            "centroidVariationPercent": 6.5,
            "upperEnergyPercent": 55.39,
            "attackMs": 12
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Idiophones/Struck%20Idiophones/Agogo%20Bells/Agogo_High_v3_rr1_Mid.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Idiophones/Struck%20Idiophones/Agogo%20Bells/Agogo_High_v3_rr1_Mid.wav",
          "license": "CC0",
          "label": "Agogo_High_v3_rr1_Mid",
          "note": null,
          "sha256": "c7f0d2b70c6cee34beea62d7566227da2687ca5c87d72d1245f444fbe2c76b43",
          "noteOffset": 12,
          "inharmonic": true,
          "start": 0,
          "measuredMidi": null,
          "features": {
            "rms": 0.008809788814446832,
            "centroidHz": 2033.6,
            "centroidVariationPercent": 6.5,
            "upperEnergyPercent": 12.9,
            "attackMs": 12.7
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/agogo.png",
      "referenceSpectrum": "../timbre-atlas/agogo-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "nylon-guitar",
      "name": "nylon guitar",
      "family": "nylon-guitar",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-nylon-guitar-1.0.0.mp3",
          "settingsSha256": "821078d0c12931c3ffdf9fd4b0eac36c829354c94f4a279dd34c74798e45887e",
          "image": "history-nylon-guitar-1.0.0.png",
          "sha256": "74945500463d4d21fd6f9129be3749a0b152cb3296f38752739c25bba555bd22"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-nylon-guitar-1.1.0.mp3",
          "settingsSha256": "35216f13e5e9f2b987a117b63e632da44f9d6a129a76b54fc4c8f1d450825b33",
          "image": "history-nylon-guitar-1.1.0.png",
          "sha256": "4bbb4294538ea50c5225b6e63b23a09a81644e9f8c47943855d028aec7280deb"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-nylon-guitar-1.2.1.mp3",
          "settingsSha256": "607980f77662de318c6c94f77b45df7d6b0b28cc2a2b00353976f3582e9dd5a5",
          "image": "history-nylon-guitar-1.2.1.png",
          "sha256": "805745867efdd52aa1cf075008d59b084432c720e0e1910a24c8434495b7c508"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-nylon-guitar-1.3.0.mp3",
          "settingsSha256": "607980f77662de318c6c94f77b45df7d6b0b28cc2a2b00353976f3582e9dd5a5",
          "unchangedFrom": "1.2.1",
          "image": "history-nylon-guitar-1.3.0.png",
          "sha256": "805745867efdd52aa1cf075008d59b084432c720e0e1910a24c8434495b7c508"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-nylon-guitar-1.4.0.mp3",
          "settingsSha256": "607980f77662de318c6c94f77b45df7d6b0b28cc2a2b00353976f3582e9dd5a5",
          "unchangedFrom": "1.3.0",
          "image": "history-nylon-guitar-1.4.0.png",
          "sha256": "805745867efdd52aa1cf075008d59b084432c720e0e1910a24c8434495b7c508"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-nylon-guitar-3.5.0.mp3",
          "settingsSha256": "607980f77662de318c6c94f77b45df7d6b0b28cc2a2b00353976f3582e9dd5a5",
          "unchangedFrom": "1.4.0",
          "image": "history-nylon-guitar-3.5.0.png",
          "sha256": "805745867efdd52aa1cf075008d59b084432c720e0e1910a24c8434495b7c508"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/guitar-nylon/A3.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/guitar-nylon/A3.wav",
          "license": "CC BY 3.0",
          "label": "A3",
          "note": "A3",
          "sha256": "11385b6091270f10ada8bba9f7bfa3c0126d3205fa0e109c86427c8f9cd29dfb",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 57,
          "features": {
            "rms": 0.08962572600848184,
            "centroidHz": 714.3,
            "centroidVariationPercent": 2.5,
            "upperEnergyPercent": 0.93,
            "attackMs": 5.6
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/guitar-nylon/E3.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/guitar-nylon/E3.wav",
          "license": "CC BY 3.0",
          "label": "E3",
          "note": "E3",
          "sha256": "e19947e7f130930ac76f6f39d33df49dfe99a240274cf1bc4f31c36239398401",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 52,
          "features": {
            "rms": 0.07642894163615535,
            "centroidHz": 792.6,
            "centroidVariationPercent": 12.7,
            "upperEnergyPercent": 1.11,
            "attackMs": 9.6
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/guitar-nylon/A2.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/guitar-nylon/A2.wav",
          "license": "CC BY 3.0",
          "label": "A2",
          "note": "A2",
          "sha256": "1f3268fa65b1204382b73357a1537a524e5a61752ab104212fd1315738adb988",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 45,
          "features": {
            "rms": 0.11485230531375158,
            "centroidHz": 359.3,
            "centroidVariationPercent": 2.1,
            "upperEnergyPercent": 0.01,
            "attackMs": 16.3
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/nylon-guitar.png",
      "referenceSpectrum": "../timbre-atlas/nylon-guitar-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "steel-guitar",
      "name": "steel guitar",
      "family": "guitar",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-steel-guitar-1.0.0.mp3",
          "settingsSha256": "c8f321d860449753256c29f325624ecde43c302ab3f89b4d50ac15cdfc0acaab",
          "image": "history-steel-guitar-1.0.0.png",
          "sha256": "1416e9e75834aa561ddb82d28b2459c2306d1a3d5f15a0f6102f8f86586967f4"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-steel-guitar-1.1.0.mp3",
          "settingsSha256": "f3a979be698b815250e7a4782317ce8cbf4f392b7050f501b5bf21d61cfeb07e",
          "image": "history-steel-guitar-1.1.0.png",
          "sha256": "dda4c55d47f6dfd7bce462a11e7f9839913afb2f40957de6d4aa1f5a123c7ed4"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-steel-guitar-1.2.1.mp3",
          "settingsSha256": "0eaf2284569b41442880fb98272d2f28610dfb844a71a757c929fb68c9c2cd9c",
          "image": "history-steel-guitar-1.2.1.png",
          "sha256": "81f7d6cbe02d972ab7e0ad6bdaf6de60f535051b3726f6eaa8a947e88269ad3a"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-steel-guitar-1.3.0.mp3",
          "settingsSha256": "b204d7465208bfd66564638e17158582d850ea59be882e7af4550c3d579979d5",
          "image": "history-steel-guitar-1.3.0.png",
          "sha256": "cb71fa8f200f4abe06c483d2f438e37cc135b772eff74d19aeb981557f1d00df"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-steel-guitar-1.4.0.mp3",
          "settingsSha256": "b204d7465208bfd66564638e17158582d850ea59be882e7af4550c3d579979d5",
          "unchangedFrom": "1.3.0",
          "image": "history-steel-guitar-1.4.0.png",
          "sha256": "cb71fa8f200f4abe06c483d2f438e37cc135b772eff74d19aeb981557f1d00df"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-steel-guitar-3.5.0.mp3",
          "settingsSha256": "b204d7465208bfd66564638e17158582d850ea59be882e7af4550c3d579979d5",
          "unchangedFrom": "1.4.0",
          "image": "history-steel-guitar-3.5.0.png",
          "sha256": "cb71fa8f200f4abe06c483d2f438e37cc135b772eff74d19aeb981557f1d00df"
        }
      ],
      "references": [
        {
          "archive": "guitar.zip",
          "member": "guitar_A3_very-long_piano_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "A3",
          "label": "A3 / very-long / piano / normal",
          "sha256": "1c62f4c377b5dfacc950360a61b4fe8cf1fe283e2ddf81b92f6668c0f5f0937c",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 57,
          "features": {
            "rms": 0.017218807558629007,
            "centroidHz": 229.4,
            "centroidVariationPercent": 24,
            "upperEnergyPercent": 0,
            "attackMs": 37
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "guitar.zip",
          "member": "guitar_A3_very-long_forte_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "A3",
          "label": "A3 / very-long / forte / normal",
          "sha256": "801285c5ef16df758abdab3a3ec535264fbcd2f07af2c4483bc7cc6aa467331a",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 57,
          "features": {
            "rms": 0.02088678021150544,
            "centroidHz": 18,
            "centroidVariationPercent": 17.5,
            "upperEnergyPercent": 0,
            "attackMs": 1770.2
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "guitar.zip",
          "member": "guitar_A2_very-long_forte_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "A2",
          "label": "A2 / very-long / forte / normal",
          "sha256": "69aeb61813e9039e50984dfae2644d8c2f7e9dff9c72c16e70d1eb86244157f6",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 45,
          "features": {
            "rms": 0.015472654337848231,
            "centroidHz": 287.2,
            "centroidVariationPercent": 29.1,
            "upperEnergyPercent": 0.12,
            "attackMs": 236.6
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/steel-guitar.png",
      "referenceSpectrum": "../timbre-atlas/steel-guitar-spectrum.png",
      "coverage": "related",
      "contextual": false
    },
    {
      "id": "jazz-guitar",
      "name": "jazz guitar",
      "family": "electric-guitar",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-jazz-guitar-1.0.0.mp3",
          "settingsSha256": "06a73a534cb9a08f17c02aad45d86b0d80e68e67c58028cbb6a1343299adc4e0",
          "image": "history-jazz-guitar-1.0.0.png",
          "sha256": "cdb8b93e1c1e83862ecbcad7b7589527374956e44d4ef94228509a9fd2361e46"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-jazz-guitar-1.1.0.mp3",
          "settingsSha256": "59aad8fffc73725ee4ebcd805be9f68190d334b837e2176abb1c384776105243",
          "image": "history-jazz-guitar-1.1.0.png",
          "sha256": "cda93555c005ef7c7ba7c5dd884b4857ce0aa16cbc59798b77a7b144a35e8d78"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-jazz-guitar-1.2.1.mp3",
          "settingsSha256": "191346abb971611c8d5c356189c84e20fe45cadfc0c33ae463efb35a76cb387d",
          "image": "history-jazz-guitar-1.2.1.png",
          "sha256": "edf278addc3e837e50bb5c028ef2f1c93d61cfc746d163b74dabe1c8d60bc152"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-jazz-guitar-1.3.0.mp3",
          "settingsSha256": "191346abb971611c8d5c356189c84e20fe45cadfc0c33ae463efb35a76cb387d",
          "unchangedFrom": "1.2.1",
          "image": "history-jazz-guitar-1.3.0.png",
          "sha256": "edf278addc3e837e50bb5c028ef2f1c93d61cfc746d163b74dabe1c8d60bc152"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-jazz-guitar-1.4.0.mp3",
          "settingsSha256": "191346abb971611c8d5c356189c84e20fe45cadfc0c33ae463efb35a76cb387d",
          "unchangedFrom": "1.3.0",
          "image": "history-jazz-guitar-1.4.0.png",
          "sha256": "edf278addc3e837e50bb5c028ef2f1c93d61cfc746d163b74dabe1c8d60bc152"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-jazz-guitar-3.5.0.mp3",
          "settingsSha256": "191346abb971611c8d5c356189c84e20fe45cadfc0c33ae463efb35a76cb387d",
          "unchangedFrom": "1.4.0",
          "image": "history-jazz-guitar-3.5.0.png",
          "sha256": "edf278addc3e837e50bb5c028ef2f1c93d61cfc746d163b74dabe1c8d60bc152"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/guitar-electric/A3.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/guitar-electric/A3.wav",
          "license": "CC BY 3.0",
          "label": "A3",
          "note": "A3",
          "sha256": "42b03c0478f4f2c0494fcfe8dc1b882b2be54d92e99f13bdf05ba8dc5dd9b8e9",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 57,
          "features": {
            "rms": 0.06037785874447921,
            "centroidHz": 433.2,
            "centroidVariationPercent": 10.6,
            "upperEnergyPercent": 0.1,
            "attackMs": 5.4
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/guitar-electric/C3.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/guitar-electric/C3.wav",
          "license": "CC BY 3.0",
          "label": "C3",
          "note": "C3",
          "sha256": "21e33e8d4babafd7497bc5e37b28fdc576be15942e8c627124e507b39f655d68",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 48,
          "features": {
            "rms": 0.04845819158053102,
            "centroidHz": 239.6,
            "centroidVariationPercent": 15.6,
            "upperEnergyPercent": 0,
            "attackMs": 7.6
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/guitar-electric/A2.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/guitar-electric/A2.wav",
          "license": "CC BY 3.0",
          "label": "A2",
          "note": "A2",
          "sha256": "80cd321487275a1116370094d43f7a4522d1d22150fa1734952266c25f5224ba",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 45,
          "features": {
            "rms": 0.05118294796309013,
            "centroidHz": 240.5,
            "centroidVariationPercent": 23.8,
            "upperEnergyPercent": 0,
            "attackMs": 5.9
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/jazz-guitar.png",
      "referenceSpectrum": "../timbre-atlas/jazz-guitar-spectrum.png",
      "coverage": "related",
      "contextual": false
    },
    {
      "id": "clean-guitar",
      "name": "clean guitar",
      "family": "electric-guitar",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-clean-guitar-1.0.0.mp3",
          "settingsSha256": "7094c6876d4f8ebf90c0edcd44ad737d72f967e9a7298c103ea5d4f751af3be1",
          "image": "history-clean-guitar-1.0.0.png",
          "sha256": "6c169afed07872edd9e94e1ad51d933bdc3f9a0fd2af5507767f42f1aee9a12a"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-clean-guitar-1.1.0.mp3",
          "settingsSha256": "21f804674587f8aed8b42798a43573fece7943e8c16414a74a85af174ffbc2c6",
          "image": "history-clean-guitar-1.1.0.png",
          "sha256": "ac943557ef958ad470738dd51fc9640621d52ac65de7a47e3b8f4c138f6b0137"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-clean-guitar-1.2.1.mp3",
          "settingsSha256": "311297995bb10488cccc40457c76509100800552e20c4ffad5d1a767acbd8c09",
          "image": "history-clean-guitar-1.2.1.png",
          "sha256": "689968be32ff556b66a8bf1c1a1254ba1a8acf573465ee51607d053abe6a803a"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-clean-guitar-1.3.0.mp3",
          "settingsSha256": "311297995bb10488cccc40457c76509100800552e20c4ffad5d1a767acbd8c09",
          "unchangedFrom": "1.2.1",
          "image": "history-clean-guitar-1.3.0.png",
          "sha256": "689968be32ff556b66a8bf1c1a1254ba1a8acf573465ee51607d053abe6a803a"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-clean-guitar-1.4.0.mp3",
          "settingsSha256": "311297995bb10488cccc40457c76509100800552e20c4ffad5d1a767acbd8c09",
          "unchangedFrom": "1.3.0",
          "image": "history-clean-guitar-1.4.0.png",
          "sha256": "689968be32ff556b66a8bf1c1a1254ba1a8acf573465ee51607d053abe6a803a"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-clean-guitar-3.5.0.mp3",
          "settingsSha256": "311297995bb10488cccc40457c76509100800552e20c4ffad5d1a767acbd8c09",
          "unchangedFrom": "1.4.0",
          "image": "history-clean-guitar-3.5.0.png",
          "sha256": "689968be32ff556b66a8bf1c1a1254ba1a8acf573465ee51607d053abe6a803a"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/guitar-electric/A3.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/guitar-electric/A3.wav",
          "license": "CC BY 3.0",
          "label": "A3",
          "note": "A3",
          "sha256": "42b03c0478f4f2c0494fcfe8dc1b882b2be54d92e99f13bdf05ba8dc5dd9b8e9",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 57,
          "features": {
            "rms": 0.06037785874447921,
            "centroidHz": 433.2,
            "centroidVariationPercent": 10.6,
            "upperEnergyPercent": 0.1,
            "attackMs": 5.4
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/guitar-electric/C3.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/guitar-electric/C3.wav",
          "license": "CC BY 3.0",
          "label": "C3",
          "note": "C3",
          "sha256": "21e33e8d4babafd7497bc5e37b28fdc576be15942e8c627124e507b39f655d68",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 48,
          "features": {
            "rms": 0.04845819158053102,
            "centroidHz": 239.6,
            "centroidVariationPercent": 15.6,
            "upperEnergyPercent": 0,
            "attackMs": 7.6
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/guitar-electric/A2.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/guitar-electric/A2.wav",
          "license": "CC BY 3.0",
          "label": "A2",
          "note": "A2",
          "sha256": "80cd321487275a1116370094d43f7a4522d1d22150fa1734952266c25f5224ba",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 45,
          "features": {
            "rms": 0.05118294796309013,
            "centroidHz": 240.5,
            "centroidVariationPercent": 23.8,
            "upperEnergyPercent": 0,
            "attackMs": 5.9
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/clean-guitar.png",
      "referenceSpectrum": "../timbre-atlas/clean-guitar-spectrum.png",
      "coverage": "related",
      "contextual": false
    },
    {
      "id": "muted-guitar",
      "name": "muted guitar",
      "family": "electric-guitar",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-muted-guitar-1.0.0.mp3",
          "settingsSha256": "bdcb153b00b024f6e3335174b0c73bf2ef9eec65c6a4da9289190808e2430275",
          "image": "history-muted-guitar-1.0.0.png",
          "sha256": "61e517e5a980cbc3906f086f1c3a65a31411ff388aee32201ef7d23482dbf373"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-muted-guitar-1.1.0.mp3",
          "settingsSha256": "9da5bca1ecefcacf685ac5215a1b9d362133f00baaec4e5730981682bc0b0d8a",
          "image": "history-muted-guitar-1.1.0.png",
          "sha256": "6104da5e5d1d8b799471908d56f5331dfb0031939b99541fa6067769695790d5"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-muted-guitar-1.2.1.mp3",
          "settingsSha256": "81f9acbe9286cc3946e5340c1b84beb37329eab23e27835d92f780c26831224e",
          "image": "history-muted-guitar-1.2.1.png",
          "sha256": "dc533d13abd2bdbbb5fdcd9e5078d52b357b672216d502d0592823ecbffa8c7e"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-muted-guitar-1.3.0.mp3",
          "settingsSha256": "81f9acbe9286cc3946e5340c1b84beb37329eab23e27835d92f780c26831224e",
          "unchangedFrom": "1.2.1",
          "image": "history-muted-guitar-1.3.0.png",
          "sha256": "dc533d13abd2bdbbb5fdcd9e5078d52b357b672216d502d0592823ecbffa8c7e"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-muted-guitar-1.4.0.mp3",
          "settingsSha256": "81f9acbe9286cc3946e5340c1b84beb37329eab23e27835d92f780c26831224e",
          "unchangedFrom": "1.3.0",
          "image": "history-muted-guitar-1.4.0.png",
          "sha256": "dc533d13abd2bdbbb5fdcd9e5078d52b357b672216d502d0592823ecbffa8c7e"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-muted-guitar-3.5.0.mp3",
          "settingsSha256": "81f9acbe9286cc3946e5340c1b84beb37329eab23e27835d92f780c26831224e",
          "unchangedFrom": "1.4.0",
          "image": "history-muted-guitar-3.5.0.png",
          "sha256": "dc533d13abd2bdbbb5fdcd9e5078d52b357b672216d502d0592823ecbffa8c7e"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/guitar-electric/A3.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/guitar-electric/A3.wav",
          "license": "CC BY 3.0",
          "label": "A3",
          "note": "A3",
          "sha256": "42b03c0478f4f2c0494fcfe8dc1b882b2be54d92e99f13bdf05ba8dc5dd9b8e9",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 57,
          "features": {
            "rms": 0.06037785874447921,
            "centroidHz": 433.2,
            "centroidVariationPercent": 10.6,
            "upperEnergyPercent": 0.1,
            "attackMs": 5.4
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/guitar-electric/C3.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/guitar-electric/C3.wav",
          "license": "CC BY 3.0",
          "label": "C3",
          "note": "C3",
          "sha256": "21e33e8d4babafd7497bc5e37b28fdc576be15942e8c627124e507b39f655d68",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 48,
          "features": {
            "rms": 0.04845819158053102,
            "centroidHz": 239.6,
            "centroidVariationPercent": 15.6,
            "upperEnergyPercent": 0,
            "attackMs": 7.6
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/guitar-electric/A2.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/guitar-electric/A2.wav",
          "license": "CC BY 3.0",
          "label": "A2",
          "note": "A2",
          "sha256": "80cd321487275a1116370094d43f7a4522d1d22150fa1734952266c25f5224ba",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 45,
          "features": {
            "rms": 0.05118294796309013,
            "centroidHz": 240.5,
            "centroidVariationPercent": 23.8,
            "upperEnergyPercent": 0,
            "attackMs": 5.9
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/muted-guitar.png",
      "referenceSpectrum": "../timbre-atlas/muted-guitar-spectrum.png",
      "coverage": "related",
      "contextual": false
    },
    {
      "id": "acoustic-bass",
      "name": "acoustic bass",
      "family": "contrabass",
      "baseMidi": 48,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-acoustic-bass-1.0.0.mp3",
          "settingsSha256": "3f653296c1626f0b2fe0bb8448efe6904450e6f079ab03f2749c86324c583b0c",
          "image": "history-acoustic-bass-1.0.0.png",
          "sha256": "b905e24e31cf5bc17814586e6dc1bbcddcaa593bbb34d985ba45cd717d91cda6"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-acoustic-bass-1.1.0.mp3",
          "settingsSha256": "2b43598d074db187a03b56e630ee0c4445ed8b5a65e3f7655a22408cbeaa8f1e",
          "image": "history-acoustic-bass-1.1.0.png",
          "sha256": "cd44a15cd11bdbd67095062624dc0025003e81def581967d9b54e5302dcfd267"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-acoustic-bass-1.2.1.mp3",
          "settingsSha256": "827ffdce6baa7dbfdc21b32ebf73e58fce0394951f44288971ae6e721d591824",
          "image": "history-acoustic-bass-1.2.1.png",
          "sha256": "db7814ac4c5161c61acffd124d2c653a8bc2c62f018048f1b0c5b9920ee36470"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-acoustic-bass-1.3.0.mp3",
          "settingsSha256": "231d49794910182ef2f86418c9a44f4b97fa7732b059674bfbdf41884621915f",
          "image": "history-acoustic-bass-1.3.0.png",
          "sha256": "0a8e29e1361a4379c227c4b0d2f072fb049db2574f451e20361f61abb736245c"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-acoustic-bass-1.4.0.mp3",
          "settingsSha256": "231d49794910182ef2f86418c9a44f4b97fa7732b059674bfbdf41884621915f",
          "unchangedFrom": "1.3.0",
          "image": "history-acoustic-bass-1.4.0.png",
          "sha256": "0a8e29e1361a4379c227c4b0d2f072fb049db2574f451e20361f61abb736245c"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-acoustic-bass-3.5.0.mp3",
          "settingsSha256": "231d49794910182ef2f86418c9a44f4b97fa7732b059674bfbdf41884621915f",
          "unchangedFrom": "1.4.0",
          "image": "history-acoustic-bass-3.5.0.png",
          "sha256": "0a8e29e1361a4379c227c4b0d2f072fb049db2574f451e20361f61abb736245c"
        }
      ],
      "references": [
        {
          "archive": "double bass.zip",
          "member": "double-bass_C3_1_piano_arco-normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C3",
          "label": "C3 / 1 / piano / arco-normal",
          "sha256": "2675ba139871b7e9ff84ed9da495ef24f15638e9765659cd2acd3efec32f8ab4",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 48,
          "features": {
            "rms": 0.03443044347688965,
            "centroidHz": 233,
            "centroidVariationPercent": 36.1,
            "upperEnergyPercent": 0.11,
            "attackMs": 289.1
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "double bass.zip",
          "member": "double-bass_C3_1_mezzo-forte_arco-normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C3",
          "label": "C3 / 1 / mezzo-forte / arco-normal",
          "sha256": "c99a803ef54353bcddfeea648e7a64a664b8df729f8e0753ee412eba69edb52c",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 48,
          "features": {
            "rms": 0.07753617046020476,
            "centroidHz": 189.9,
            "centroidVariationPercent": 12.4,
            "upperEnergyPercent": 0.02,
            "attackMs": 405.8
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "double bass.zip",
          "member": "double-bass_C3_1_forte_arco-normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C3",
          "label": "C3 / 1 / forte / arco-normal",
          "sha256": "51afd40291f686383f51ae22dbc46c8e1b65754086a3b87d2f26434d3e33cd95",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 48,
          "features": {
            "rms": 0.09564583106717522,
            "centroidHz": 231.7,
            "centroidVariationPercent": 17.3,
            "upperEnergyPercent": 0.23,
            "attackMs": 342.7
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/acoustic-bass.png",
      "referenceSpectrum": "../timbre-atlas/acoustic-bass-spectrum.png",
      "coverage": "related",
      "contextual": false
    },
    {
      "id": "fingered-bass",
      "name": "fingered bass",
      "family": "electric-bass",
      "baseMidi": 48,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-fingered-bass-1.0.0.mp3",
          "settingsSha256": "b5ec867e05dd0537232313c4b91768490cba56bbfd07e794f8e3c7974bcb41ea",
          "image": "history-fingered-bass-1.0.0.png",
          "sha256": "f8bf4bbe8dfbbefee462f2b0fd584e5d4ceeec3a7a32026d2865543f5637ae56"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-fingered-bass-1.1.0.mp3",
          "settingsSha256": "f5c98a6f213a5acd5fc6d1c99fa39bc703fbc48b23bf9a1d0b0c1059c094b9e7",
          "image": "history-fingered-bass-1.1.0.png",
          "sha256": "5a86261785c58abd379b28e668d1ee76445b55cb619a8ce772bdb72e05dc50be"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-fingered-bass-1.2.1.mp3",
          "settingsSha256": "ddcb008ace66413b3c2d47eb8a09f4cda2d7b8e36c25bd0ff2941b621bc08e90",
          "image": "history-fingered-bass-1.2.1.png",
          "sha256": "99cc22d80288cb5839b2ae41f6ebeb950d8344a348508628696166d6bd94d0f7"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-fingered-bass-1.3.0.mp3",
          "settingsSha256": "0888a1b480d8ff7824dd9ff904484cc17ded935ca99b6aeecc0de8fa4bd6c213",
          "image": "history-fingered-bass-1.3.0.png",
          "sha256": "72f80367ce655cf4d528368a6ea7cd93bc45a7fe24eae38dd97a9738c7486791"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-fingered-bass-1.4.0.mp3",
          "settingsSha256": "0888a1b480d8ff7824dd9ff904484cc17ded935ca99b6aeecc0de8fa4bd6c213",
          "unchangedFrom": "1.3.0",
          "image": "history-fingered-bass-1.4.0.png",
          "sha256": "72f80367ce655cf4d528368a6ea7cd93bc45a7fe24eae38dd97a9738c7486791"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-fingered-bass-3.5.0.mp3",
          "settingsSha256": "0888a1b480d8ff7824dd9ff904484cc17ded935ca99b6aeecc0de8fa4bd6c213",
          "unchangedFrom": "1.4.0",
          "image": "history-fingered-bass-3.5.0.png",
          "sha256": "72f80367ce655cf4d528368a6ea7cd93bc45a7fe24eae38dd97a9738c7486791"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/bass-electric/E3.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/bass-electric/E3.wav",
          "license": "CC BY 3.0",
          "label": "E3",
          "note": "E3",
          "sha256": "a3a48e7dd986acfaf4893ccecde5ba6c0b8919d1385a3c4abe76f26ba7421dd6",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 52,
          "features": {
            "rms": 0.11114184285587218,
            "centroidHz": 480.2,
            "centroidVariationPercent": 4.1,
            "upperEnergyPercent": 0.09,
            "attackMs": 11.1
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/bass-electric/As1.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/bass-electric/As1.wav",
          "license": "CC BY 3.0",
          "label": "As1",
          "note": "As1",
          "sha256": "75813a2833921a0c81872c607243f55056bd63e9b1c5b5cc53c92c2503a08afe",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 34,
          "features": {
            "rms": 0.09198415156070405,
            "centroidHz": 269.6,
            "centroidVariationPercent": 5.3,
            "upperEnergyPercent": 0,
            "attackMs": 18.6
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/bass-electric/As2.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/bass-electric/As2.wav",
          "license": "CC BY 3.0",
          "label": "As2",
          "note": "As2",
          "sha256": "c6b78908f281893bd2932dce5caed9ac1131bdcf89e8ba82274deb6157ff3b85",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 46,
          "features": {
            "rms": 0.10461836263181597,
            "centroidHz": 368.4,
            "centroidVariationPercent": 3.3,
            "upperEnergyPercent": 0.09,
            "attackMs": 9.1
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/fingered-bass.png",
      "referenceSpectrum": "../timbre-atlas/fingered-bass-spectrum.png",
      "coverage": "related",
      "contextual": false
    },
    {
      "id": "picked-bass",
      "name": "picked bass",
      "family": "electric-bass",
      "baseMidi": 48,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-picked-bass-1.0.0.mp3",
          "settingsSha256": "07659e2bc29d919422a456ecf60e5f057cef9abe9ca84074a021a8e2a8729ef9",
          "image": "history-picked-bass-1.0.0.png",
          "sha256": "4aa3600570c66bc9000d5a137842c1ce9184d2950ae07e4bc0b1df1fac775fb1"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-picked-bass-1.1.0.mp3",
          "settingsSha256": "a26293024f34f3bbc5c3d4d2924286b28fcf1e141b5d5ef5ad4c1e993ba67822",
          "image": "history-picked-bass-1.1.0.png",
          "sha256": "5a86261785c58abd379b28e668d1ee76445b55cb619a8ce772bdb72e05dc50be"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-picked-bass-1.2.1.mp3",
          "settingsSha256": "1d1cdb417801038481a752fb5966162e24b5bd09b6c3ae78c1ccb09395bd874d",
          "image": "history-picked-bass-1.2.1.png",
          "sha256": "99cc22d80288cb5839b2ae41f6ebeb950d8344a348508628696166d6bd94d0f7"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-picked-bass-1.3.0.mp3",
          "settingsSha256": "28d9455a1a4d10567f119ca97a3e3dab7af7f7a1bef4a1d0bc1affb118b1ba2b",
          "image": "history-picked-bass-1.3.0.png",
          "sha256": "bd6621b9d4213b677e32d4ab9c6695d7d563a20a4dd389a03480f1295ce40149"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-picked-bass-1.4.0.mp3",
          "settingsSha256": "28d9455a1a4d10567f119ca97a3e3dab7af7f7a1bef4a1d0bc1affb118b1ba2b",
          "unchangedFrom": "1.3.0",
          "image": "history-picked-bass-1.4.0.png",
          "sha256": "bd6621b9d4213b677e32d4ab9c6695d7d563a20a4dd389a03480f1295ce40149"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-picked-bass-3.5.0.mp3",
          "settingsSha256": "28d9455a1a4d10567f119ca97a3e3dab7af7f7a1bef4a1d0bc1affb118b1ba2b",
          "unchangedFrom": "1.4.0",
          "image": "history-picked-bass-3.5.0.png",
          "sha256": "bd6621b9d4213b677e32d4ab9c6695d7d563a20a4dd389a03480f1295ce40149"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/bass-electric/E3.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/bass-electric/E3.wav",
          "license": "CC BY 3.0",
          "label": "E3",
          "note": "E3",
          "sha256": "a3a48e7dd986acfaf4893ccecde5ba6c0b8919d1385a3c4abe76f26ba7421dd6",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 52,
          "features": {
            "rms": 0.11114184285587218,
            "centroidHz": 480.2,
            "centroidVariationPercent": 4.1,
            "upperEnergyPercent": 0.09,
            "attackMs": 11.1
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/bass-electric/As1.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/bass-electric/As1.wav",
          "license": "CC BY 3.0",
          "label": "As1",
          "note": "As1",
          "sha256": "75813a2833921a0c81872c607243f55056bd63e9b1c5b5cc53c92c2503a08afe",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 34,
          "features": {
            "rms": 0.09198415156070405,
            "centroidHz": 269.6,
            "centroidVariationPercent": 5.3,
            "upperEnergyPercent": 0,
            "attackMs": 18.6
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/bass-electric/As2.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/bass-electric/As2.wav",
          "license": "CC BY 3.0",
          "label": "As2",
          "note": "As2",
          "sha256": "c6b78908f281893bd2932dce5caed9ac1131bdcf89e8ba82274deb6157ff3b85",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 46,
          "features": {
            "rms": 0.10461836263181597,
            "centroidHz": 368.4,
            "centroidVariationPercent": 3.3,
            "upperEnergyPercent": 0.09,
            "attackMs": 9.1
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/picked-bass.png",
      "referenceSpectrum": "../timbre-atlas/picked-bass-spectrum.png",
      "coverage": "related",
      "contextual": false
    },
    {
      "id": "fretless-bass",
      "name": "fretless bass",
      "family": "electric-bass",
      "baseMidi": 48,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-fretless-bass-1.0.0.mp3",
          "settingsSha256": "c1f8e073eca453844a5d45cca59894be9d1bcc3fb5ca353d6979971e95ba1fb9",
          "image": "history-fretless-bass-1.0.0.png",
          "sha256": "7320a76e4af1f0eba954379d93a9b8bf600a6e439f1c42c7edeef13729dca1e5"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-fretless-bass-1.1.0.mp3",
          "settingsSha256": "31f4a8e2ebf6e845611e71e53e08e31942231380dea8b67de9907930ee91d410",
          "image": "history-fretless-bass-1.1.0.png",
          "sha256": "5a86261785c58abd379b28e668d1ee76445b55cb619a8ce772bdb72e05dc50be"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-fretless-bass-1.2.1.mp3",
          "settingsSha256": "5a0e7276ecaa20f63b1ef0d25d025cfa92b8813728906e70506ab64ef49be1b2",
          "image": "history-fretless-bass-1.2.1.png",
          "sha256": "99cc22d80288cb5839b2ae41f6ebeb950d8344a348508628696166d6bd94d0f7"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-fretless-bass-1.3.0.mp3",
          "settingsSha256": "bd613e4f73a683b7499167b59ffffb179631219ee3a4d7f291fee003004d037c",
          "image": "history-fretless-bass-1.3.0.png",
          "sha256": "f1d90c478254103674cc0580f25c5b07c87f0556aaf489b834fa8b0a6738fabd"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-fretless-bass-1.4.0.mp3",
          "settingsSha256": "bd613e4f73a683b7499167b59ffffb179631219ee3a4d7f291fee003004d037c",
          "unchangedFrom": "1.3.0",
          "image": "history-fretless-bass-1.4.0.png",
          "sha256": "f1d90c478254103674cc0580f25c5b07c87f0556aaf489b834fa8b0a6738fabd"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-fretless-bass-3.5.0.mp3",
          "settingsSha256": "bd613e4f73a683b7499167b59ffffb179631219ee3a4d7f291fee003004d037c",
          "unchangedFrom": "1.4.0",
          "image": "history-fretless-bass-3.5.0.png",
          "sha256": "f1d90c478254103674cc0580f25c5b07c87f0556aaf489b834fa8b0a6738fabd"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/bass-electric/E3.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/bass-electric/E3.wav",
          "license": "CC BY 3.0",
          "label": "E3",
          "note": "E3",
          "sha256": "a3a48e7dd986acfaf4893ccecde5ba6c0b8919d1385a3c4abe76f26ba7421dd6",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 52,
          "features": {
            "rms": 0.11114184285587218,
            "centroidHz": 480.2,
            "centroidVariationPercent": 4.1,
            "upperEnergyPercent": 0.09,
            "attackMs": 11.1
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/bass-electric/As1.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/bass-electric/As1.wav",
          "license": "CC BY 3.0",
          "label": "As1",
          "note": "As1",
          "sha256": "75813a2833921a0c81872c607243f55056bd63e9b1c5b5cc53c92c2503a08afe",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 34,
          "features": {
            "rms": 0.09198415156070405,
            "centroidHz": 269.6,
            "centroidVariationPercent": 5.3,
            "upperEnergyPercent": 0,
            "attackMs": 18.6
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/bass-electric/As2.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/bass-electric/As2.wav",
          "license": "CC BY 3.0",
          "label": "As2",
          "note": "As2",
          "sha256": "c6b78908f281893bd2932dce5caed9ac1131bdcf89e8ba82274deb6157ff3b85",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 46,
          "features": {
            "rms": 0.10461836263181597,
            "centroidHz": 368.4,
            "centroidVariationPercent": 3.3,
            "upperEnergyPercent": 0.09,
            "attackMs": 9.1
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/fretless-bass.png",
      "referenceSpectrum": "../timbre-atlas/fretless-bass-spectrum.png",
      "coverage": "related",
      "contextual": false
    },
    {
      "id": "slap-bass-1",
      "name": "slap bass 1",
      "family": "electric-bass",
      "baseMidi": 48,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-slap-bass-1-1.0.0.mp3",
          "settingsSha256": "3e6900c6ccb741452c8db599d3b535fe0777c717287e3aaef4a93ddb75c99ea6",
          "image": "history-slap-bass-1-1.0.0.png",
          "sha256": "574dbbcbbe5d1e5611d0d4114b77e36d5949c4cecd21d94af3d32dbd2e94a89f"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-slap-bass-1-1.1.0.mp3",
          "settingsSha256": "6ff0c70a77cbdd4dc7badca717fbe1d813241c8308372e27a5bb5338d18bf12f",
          "image": "history-slap-bass-1-1.1.0.png",
          "sha256": "84e070259b75b70d367900e3ec09a7793c747403bf04d08ef4bfa3243ff0daba"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-slap-bass-1-1.2.1.mp3",
          "settingsSha256": "04c70d769e315f65961308e0cc237f5d46d3c5364d4d95627aec370eeda3a218",
          "image": "history-slap-bass-1-1.2.1.png",
          "sha256": "ea0a0c9225f495878b7b05ad5b481b08a765e743d543622dc53943d15eb5afdd"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-slap-bass-1-1.3.0.mp3",
          "settingsSha256": "24f7cbdf48fa661f11133d267519464a2c9ab62d438b32d07edd6d5e07d42d52",
          "image": "history-slap-bass-1-1.3.0.png",
          "sha256": "0aadc62cdec267878f3c6fa3862f5d1bca094b3e75496d3b52ff4be7bdbae380"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-slap-bass-1-1.4.0.mp3",
          "settingsSha256": "24f7cbdf48fa661f11133d267519464a2c9ab62d438b32d07edd6d5e07d42d52",
          "unchangedFrom": "1.3.0",
          "image": "history-slap-bass-1-1.4.0.png",
          "sha256": "0aadc62cdec267878f3c6fa3862f5d1bca094b3e75496d3b52ff4be7bdbae380"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-slap-bass-1-3.5.0.mp3",
          "settingsSha256": "24f7cbdf48fa661f11133d267519464a2c9ab62d438b32d07edd6d5e07d42d52",
          "unchangedFrom": "1.4.0",
          "image": "history-slap-bass-1-3.5.0.png",
          "sha256": "0aadc62cdec267878f3c6fa3862f5d1bca094b3e75496d3b52ff4be7bdbae380"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/bass-electric/E3.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/bass-electric/E3.wav",
          "license": "CC BY 3.0",
          "label": "E3",
          "note": "E3",
          "sha256": "a3a48e7dd986acfaf4893ccecde5ba6c0b8919d1385a3c4abe76f26ba7421dd6",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 52,
          "features": {
            "rms": 0.11114184285587218,
            "centroidHz": 480.2,
            "centroidVariationPercent": 4.1,
            "upperEnergyPercent": 0.09,
            "attackMs": 11.1
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/bass-electric/As1.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/bass-electric/As1.wav",
          "license": "CC BY 3.0",
          "label": "As1",
          "note": "As1",
          "sha256": "75813a2833921a0c81872c607243f55056bd63e9b1c5b5cc53c92c2503a08afe",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 34,
          "features": {
            "rms": 0.09198415156070405,
            "centroidHz": 269.6,
            "centroidVariationPercent": 5.3,
            "upperEnergyPercent": 0,
            "attackMs": 18.6
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/bass-electric/As2.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/bass-electric/As2.wav",
          "license": "CC BY 3.0",
          "label": "As2",
          "note": "As2",
          "sha256": "c6b78908f281893bd2932dce5caed9ac1131bdcf89e8ba82274deb6157ff3b85",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 46,
          "features": {
            "rms": 0.10461836263181597,
            "centroidHz": 368.4,
            "centroidVariationPercent": 3.3,
            "upperEnergyPercent": 0.09,
            "attackMs": 9.1
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/slap-bass-1.png",
      "referenceSpectrum": "../timbre-atlas/slap-bass-1-spectrum.png",
      "coverage": "related",
      "contextual": false
    },
    {
      "id": "slap-bass-2",
      "name": "slap bass 2",
      "family": "electric-bass",
      "baseMidi": 48,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-slap-bass-2-1.0.0.mp3",
          "settingsSha256": "64ad57dc5565ba0dd4a536a4772053a1a0ff28550c1667e28f2d8c9f6692515d",
          "image": "history-slap-bass-2-1.0.0.png",
          "sha256": "b62070258719f259d41a3a87d3096e048212e54b9fb1d2a4d65323d29e4436b7"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-slap-bass-2-1.1.0.mp3",
          "settingsSha256": "0f5acc379e530ab2888533f474c9933aa97d579fe61cef299a91558021565d07",
          "image": "history-slap-bass-2-1.1.0.png",
          "sha256": "84e070259b75b70d367900e3ec09a7793c747403bf04d08ef4bfa3243ff0daba"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-slap-bass-2-1.2.1.mp3",
          "settingsSha256": "8c9fdff2dbfc33aa9c78edd49d88ba5ed1aa12f120dc00f05d79fe370cea0536",
          "image": "history-slap-bass-2-1.2.1.png",
          "sha256": "ea0a0c9225f495878b7b05ad5b481b08a765e743d543622dc53943d15eb5afdd"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-slap-bass-2-1.3.0.mp3",
          "settingsSha256": "12a9ffd27123371e39bf966d5979c4746de151168df56b4baf2b908bfd817c33",
          "image": "history-slap-bass-2-1.3.0.png",
          "sha256": "aae8a750661f6a25f989bfae37c84041c4cd313f53c68c93558fd8f2ac79128f"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-slap-bass-2-1.4.0.mp3",
          "settingsSha256": "12a9ffd27123371e39bf966d5979c4746de151168df56b4baf2b908bfd817c33",
          "unchangedFrom": "1.3.0",
          "image": "history-slap-bass-2-1.4.0.png",
          "sha256": "aae8a750661f6a25f989bfae37c84041c4cd313f53c68c93558fd8f2ac79128f"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-slap-bass-2-3.5.0.mp3",
          "settingsSha256": "12a9ffd27123371e39bf966d5979c4746de151168df56b4baf2b908bfd817c33",
          "unchangedFrom": "1.4.0",
          "image": "history-slap-bass-2-3.5.0.png",
          "sha256": "aae8a750661f6a25f989bfae37c84041c4cd313f53c68c93558fd8f2ac79128f"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/bass-electric/E3.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/bass-electric/E3.wav",
          "license": "CC BY 3.0",
          "label": "E3",
          "note": "E3",
          "sha256": "a3a48e7dd986acfaf4893ccecde5ba6c0b8919d1385a3c4abe76f26ba7421dd6",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 52,
          "features": {
            "rms": 0.11114184285587218,
            "centroidHz": 480.2,
            "centroidVariationPercent": 4.1,
            "upperEnergyPercent": 0.09,
            "attackMs": 11.1
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/bass-electric/As1.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/bass-electric/As1.wav",
          "license": "CC BY 3.0",
          "label": "As1",
          "note": "As1",
          "sha256": "75813a2833921a0c81872c607243f55056bd63e9b1c5b5cc53c92c2503a08afe",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 34,
          "features": {
            "rms": 0.09198415156070405,
            "centroidHz": 269.6,
            "centroidVariationPercent": 5.3,
            "upperEnergyPercent": 0,
            "attackMs": 18.6
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/bass-electric/As2.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/bass-electric/As2.wav",
          "license": "CC BY 3.0",
          "label": "As2",
          "note": "As2",
          "sha256": "c6b78908f281893bd2932dce5caed9ac1131bdcf89e8ba82274deb6157ff3b85",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 46,
          "features": {
            "rms": 0.10461836263181597,
            "centroidHz": 368.4,
            "centroidVariationPercent": 3.3,
            "upperEnergyPercent": 0.09,
            "attackMs": 9.1
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/slap-bass-2.png",
      "referenceSpectrum": "../timbre-atlas/slap-bass-2-spectrum.png",
      "coverage": "related",
      "contextual": false
    },
    {
      "id": "pizzicato-strings",
      "name": "pizzicato strings",
      "family": "pizzicato",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-pizzicato-strings-1.0.0.mp3",
          "settingsSha256": "65df13f065aa1870968d2e026fca495ef941bc5662b7f431a862a4510debe771",
          "image": "history-pizzicato-strings-1.0.0.png",
          "sha256": "d56dc207e9dd8c3ec0f489778d2c1eb0a8c3fe5012cc35bc7608080d4b77d694"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-pizzicato-strings-1.1.0.mp3",
          "settingsSha256": "bca51756e95df32442741d887b2c6c576a74ccfbbec86de56583b42183a7f6f1",
          "image": "history-pizzicato-strings-1.1.0.png",
          "sha256": "889889f2c5ac8df018d9664cf5f874b9263b74daf29cbf587e20dcaf5a18b918"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-pizzicato-strings-1.2.1.mp3",
          "settingsSha256": "30b01518d5855ede4924fed2b31c6105c3c71ad1ebb731f5554350bec58f8f0c",
          "image": "history-pizzicato-strings-1.2.1.png",
          "sha256": "e83952fd9d807ae455edf3767186f572ed000892981dad6f808b72b814e807f2"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-pizzicato-strings-1.3.0.mp3",
          "settingsSha256": "7117066251e7c7131e2ddb786f61884e36c12d9db066c0423d458065a8ca91dc",
          "image": "history-pizzicato-strings-1.3.0.png",
          "sha256": "799a2bf9ef9211e255b24d46f8988d08411794c7ec28ae6a44dae64dbeeb6159"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-pizzicato-strings-1.4.0.mp3",
          "settingsSha256": "7117066251e7c7131e2ddb786f61884e36c12d9db066c0423d458065a8ca91dc",
          "unchangedFrom": "1.3.0",
          "image": "history-pizzicato-strings-1.4.0.png",
          "sha256": "799a2bf9ef9211e255b24d46f8988d08411794c7ec28ae6a44dae64dbeeb6159"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-pizzicato-strings-3.5.0.mp3",
          "settingsSha256": "7117066251e7c7131e2ddb786f61884e36c12d9db066c0423d458065a8ca91dc",
          "unchangedFrom": "1.4.0",
          "image": "history-pizzicato-strings-3.5.0.png",
          "sha256": "799a2bf9ef9211e255b24d46f8988d08411794c7ec28ae6a44dae64dbeeb6159"
        }
      ],
      "references": [
        {
          "archive": "violin.zip",
          "member": "violin_C5_025_piano_pizz-normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C5",
          "label": "C5 / 025 / piano / pizz-normal",
          "sha256": "f06915ef71369b1dba9143719e7e32123e0ae1e7f11fa39ed47689c7665387e7",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.021366022690547794,
            "centroidHz": 529.1,
            "centroidVariationPercent": 28.7,
            "upperEnergyPercent": 0.02,
            "attackMs": 122.3
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "violin.zip",
          "member": "violin_C5_025_forte_pizz-normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C5",
          "label": "C5 / 025 / forte / pizz-normal",
          "sha256": "32fc0acfd799eebbee55dfa826b34812620bfc61e7d3a7129ac61dce37bc515a",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.05009356308806316,
            "centroidHz": 512,
            "centroidVariationPercent": 51.6,
            "upperEnergyPercent": 0.05,
            "attackMs": 42.1
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "violin.zip",
          "member": "violin_A6_025_mezzo-forte_pizz-normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "A6",
          "label": "A6 / 025 / mezzo-forte / pizz-normal",
          "sha256": "8200ca5abda03f774603d9513eb21933ce395a9f2e107a2a53b6a3b9924d2ba7",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 94,
          "features": {
            "rms": 0.01716689727491397,
            "centroidHz": 1567.7,
            "centroidVariationPercent": 99.1,
            "upperEnergyPercent": 6.35,
            "attackMs": 105
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/pizzicato-strings.png",
      "referenceSpectrum": "../timbre-atlas/pizzicato-strings-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "harp",
      "name": "harp",
      "family": "harp",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-harp-1.0.0.mp3",
          "settingsSha256": "9e9bf66fbc6b2b7008c5539782a0929cd1d50259dddbafc4bd491424055eade3",
          "image": "history-harp-1.0.0.png",
          "sha256": "c6b7d01e0447fe4e1b04c2073f751fb17a12d9a2781aaccf3211e20d1c08886c"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-harp-1.1.0.mp3",
          "settingsSha256": "10ede6e85a7a64f7f693b8f5d4aa0d466cc9de9bbf396171165a58d0466568de",
          "image": "history-harp-1.1.0.png",
          "sha256": "15019dc092443656dff821d655df1df41423d0685ccc5b763c53f1bfc3f1a002"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-harp-1.2.1.mp3",
          "settingsSha256": "b35fcc81514e39992859f1e3827bff63364b6fcce2b9e7d35c4444bb2cecb6a5",
          "image": "history-harp-1.2.1.png",
          "sha256": "4f1cdc2c3dd187084adf0e4c06231a6caa7cdffbee1a3acd38f0ec5e34a8f968"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-harp-1.3.0.mp3",
          "settingsSha256": "b35fcc81514e39992859f1e3827bff63364b6fcce2b9e7d35c4444bb2cecb6a5",
          "unchangedFrom": "1.2.1",
          "image": "history-harp-1.3.0.png",
          "sha256": "4f1cdc2c3dd187084adf0e4c06231a6caa7cdffbee1a3acd38f0ec5e34a8f968"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-harp-1.4.0.mp3",
          "settingsSha256": "b35fcc81514e39992859f1e3827bff63364b6fcce2b9e7d35c4444bb2cecb6a5",
          "unchangedFrom": "1.3.0",
          "image": "history-harp-1.4.0.png",
          "sha256": "4f1cdc2c3dd187084adf0e4c06231a6caa7cdffbee1a3acd38f0ec5e34a8f968"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-harp-3.5.0.mp3",
          "settingsSha256": "b35fcc81514e39992859f1e3827bff63364b6fcce2b9e7d35c4444bb2cecb6a5",
          "unchangedFrom": "1.4.0",
          "image": "history-harp-3.5.0.png",
          "sha256": "4f1cdc2c3dd187084adf0e4c06231a6caa7cdffbee1a3acd38f0ec5e34a8f968"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Chordophones/Composite%20Chordophones/Concert%20Harp/KSHarp_A2_f1.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Chordophones/Composite%20Chordophones/Concert%20Harp/KSHarp_A2_f1.wav",
          "license": "CC0",
          "label": "KSHarp_A2_f1",
          "note": "A2",
          "sha256": "c58aae0c0eec982c4cb45034d63b00567266fdbb9351354f916703ac4bc51b4e",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 57,
          "features": {
            "rms": 0.01953802656976914,
            "centroidHz": 237.6,
            "centroidVariationPercent": 2.9,
            "upperEnergyPercent": 0,
            "attackMs": 51.1
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Chordophones/Composite%20Chordophones/Concert%20Harp/KSHarp_A2_mf1.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Chordophones/Composite%20Chordophones/Concert%20Harp/KSHarp_A2_mf1.wav",
          "license": "CC0",
          "label": "KSHarp_A2_mf1",
          "note": "A2",
          "sha256": "1df9f4d138ca3931fcb458bcdf01304cadf2e5f4eef67bbc17b0e42c0e60fce6",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 57,
          "features": {
            "rms": 0.007304101930449097,
            "centroidHz": 213.2,
            "centroidVariationPercent": 6.2,
            "upperEnergyPercent": 0,
            "attackMs": 77.7
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Chordophones/Composite%20Chordophones/Concert%20Harp/KSHarp_A4_f1.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Chordophones/Composite%20Chordophones/Concert%20Harp/KSHarp_A4_f1.wav",
          "license": "CC0",
          "label": "KSHarp_A4_f1",
          "note": "A4",
          "sha256": "dd5cc854f4e7a01b9903cc49645e54905b06ed844a5164c0693224b60a862833",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 81,
          "features": {
            "rms": 0.02785855470251402,
            "centroidHz": 734.1,
            "centroidVariationPercent": 21.4,
            "upperEnergyPercent": 0.92,
            "attackMs": 29.6
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/harp.png",
      "referenceSpectrum": "../timbre-atlas/harp-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "sitar",
      "name": "sitar",
      "family": "sitar",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-sitar-1.0.0.mp3",
          "settingsSha256": "17e6b45ab60a02b2865d803cfb827a729bb138fd657306d46d5e36b16a2db325",
          "image": "history-sitar-1.0.0.png",
          "sha256": "7395309479d0355bf92962e35536e087a6a4ebab1eb1bca2e45f56b547815a11"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-sitar-1.1.0.mp3",
          "settingsSha256": "31a77bd8a4389faad385f719bc54f7779c6c558a38a153c7e87829442364e6f3",
          "image": "history-sitar-1.1.0.png",
          "sha256": "ee60c1e9549f8bb8b0f4b64ef252211d04ebafa0d1f5a69235aeaf5662971bc3"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-sitar-1.2.1.mp3",
          "settingsSha256": "31a77bd8a4389faad385f719bc54f7779c6c558a38a153c7e87829442364e6f3",
          "unchangedFrom": "1.1.0",
          "image": "history-sitar-1.2.1.png",
          "sha256": "ee60c1e9549f8bb8b0f4b64ef252211d04ebafa0d1f5a69235aeaf5662971bc3"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-sitar-1.3.0.mp3",
          "settingsSha256": "31a77bd8a4389faad385f719bc54f7779c6c558a38a153c7e87829442364e6f3",
          "unchangedFrom": "1.2.1",
          "image": "history-sitar-1.3.0.png",
          "sha256": "ee60c1e9549f8bb8b0f4b64ef252211d04ebafa0d1f5a69235aeaf5662971bc3"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-sitar-1.4.0.mp3",
          "settingsSha256": "31a77bd8a4389faad385f719bc54f7779c6c558a38a153c7e87829442364e6f3",
          "unchangedFrom": "1.3.0",
          "image": "history-sitar-1.4.0.png",
          "sha256": "ee60c1e9549f8bb8b0f4b64ef252211d04ebafa0d1f5a69235aeaf5662971bc3"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-sitar-3.5.0.mp3",
          "settingsSha256": "31a77bd8a4389faad385f719bc54f7779c6c558a38a153c7e87829442364e6f3",
          "unchangedFrom": "1.4.0",
          "image": "history-sitar-3.5.0.png",
          "sha256": "ee60c1e9549f8bb8b0f4b64ef252211d04ebafa0d1f5a69235aeaf5662971bc3"
        }
      ],
      "references": [
        {
          "url": "https://upload.wikimedia.org/wikipedia/commons/2/2f/Sitar_clipping.ogg",
          "sourceUrl": "https://commons.wikimedia.org/wiki/File:Sitar_clipping.ogg",
          "source": "Sanath311 / Wikimedia Commons",
          "license": "CC BY-SA 3.0",
          "licenseUrl": "https://creativecommons.org/licenses/by-sa/3.0/",
          "label": "sitar performance excerpt 1 of 3 (same recording)",
          "note": null,
          "excerpt": 0,
          "contextual": true,
          "sha256": "a40742b32e78d214dfcc6b1d89a3ce88d3f04365df5aab3fb25dd7a036dc09e8",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": null,
          "features": {
            "rms": 0.12803199237926796,
            "centroidHz": 685.2,
            "centroidVariationPercent": 10.7,
            "upperEnergyPercent": 3.56,
            "attackMs": 1016
          },
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://upload.wikimedia.org/wikipedia/commons/2/2f/Sitar_clipping.ogg",
          "sourceUrl": "https://commons.wikimedia.org/wiki/File:Sitar_clipping.ogg",
          "source": "Sanath311 / Wikimedia Commons",
          "license": "CC BY-SA 3.0",
          "licenseUrl": "https://creativecommons.org/licenses/by-sa/3.0/",
          "label": "sitar performance excerpt 2 of 3 (same recording)",
          "note": null,
          "excerpt": 1,
          "contextual": true,
          "sha256": "a40742b32e78d214dfcc6b1d89a3ce88d3f04365df5aab3fb25dd7a036dc09e8",
          "noteOffset": 0,
          "start": 5.996,
          "measuredMidi": null,
          "features": {
            "rms": 0.15941200521428517,
            "centroidHz": 604.6,
            "centroidVariationPercent": 11.6,
            "upperEnergyPercent": 1.58,
            "attackMs": 214.3
          },
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://upload.wikimedia.org/wikipedia/commons/2/2f/Sitar_clipping.ogg",
          "sourceUrl": "https://commons.wikimedia.org/wiki/File:Sitar_clipping.ogg",
          "source": "Sanath311 / Wikimedia Commons",
          "license": "CC BY-SA 3.0",
          "licenseUrl": "https://creativecommons.org/licenses/by-sa/3.0/",
          "label": "sitar performance excerpt 3 of 3 (same recording)",
          "note": null,
          "excerpt": 2,
          "contextual": true,
          "sha256": "a40742b32e78d214dfcc6b1d89a3ce88d3f04365df5aab3fb25dd7a036dc09e8",
          "noteOffset": 0,
          "start": 11.992,
          "measuredMidi": null,
          "features": {
            "rms": 0.10950226821231067,
            "centroidHz": 609.1,
            "centroidVariationPercent": 12.4,
            "upperEnergyPercent": 1.69,
            "attackMs": 646.5
          },
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/sitar.png",
      "referenceSpectrum": "../timbre-atlas/sitar-spectrum.png",
      "coverage": "instrument",
      "contextual": true
    },
    {
      "id": "banjo",
      "name": "banjo",
      "family": "banjo",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-banjo-1.0.0.mp3",
          "settingsSha256": "1ee37a7371944170e39a3156a45a7471867239ef088d8691826c7b277f2440a6",
          "image": "history-banjo-1.0.0.png",
          "sha256": "7e91f9f8878e3e2b9430724e11bbd4015fee2a3bbcbe99e5d147e56ad9138a62"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-banjo-1.1.0.mp3",
          "settingsSha256": "6a1591ac39b6f1c5700ebc51e8dbc6bb9c6f4b19031b933e0bccf65d36d4c969",
          "image": "history-banjo-1.1.0.png",
          "sha256": "953c22f7a2c934a6ed23f22f4caaade63d0aa0d615beda2aac41a0761bbd1e52"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-banjo-1.2.1.mp3",
          "settingsSha256": "be545555967e499e076ede453b4b119576118422231099c2e0a866f3f76f0663",
          "image": "history-banjo-1.2.1.png",
          "sha256": "c653f646ba682b699b8f3fbf76688b6e7a850d03226e20b74b7151c012a5bfd5"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-banjo-1.3.0.mp3",
          "settingsSha256": "be545555967e499e076ede453b4b119576118422231099c2e0a866f3f76f0663",
          "unchangedFrom": "1.2.1",
          "image": "history-banjo-1.3.0.png",
          "sha256": "c653f646ba682b699b8f3fbf76688b6e7a850d03226e20b74b7151c012a5bfd5"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-banjo-1.4.0.mp3",
          "settingsSha256": "be545555967e499e076ede453b4b119576118422231099c2e0a866f3f76f0663",
          "unchangedFrom": "1.3.0",
          "image": "history-banjo-1.4.0.png",
          "sha256": "c653f646ba682b699b8f3fbf76688b6e7a850d03226e20b74b7151c012a5bfd5"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-banjo-3.5.0.mp3",
          "settingsSha256": "be545555967e499e076ede453b4b119576118422231099c2e0a866f3f76f0663",
          "unchangedFrom": "1.4.0",
          "image": "history-banjo-3.5.0.png",
          "sha256": "c653f646ba682b699b8f3fbf76688b6e7a850d03226e20b74b7151c012a5bfd5"
        }
      ],
      "references": [
        {
          "archive": "banjo.zip",
          "member": "banjo_A3_very-long_piano_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "A3",
          "label": "A3 / very-long / piano / normal",
          "sha256": "fa3a934a3b7e4a6f16f66ddb46f78f42c42d46f77045f97c3bd981cb6d8b8ecf",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 57,
          "features": {
            "rms": 0.023447127090125773,
            "centroidHz": 745,
            "centroidVariationPercent": 47.9,
            "upperEnergyPercent": 0.25,
            "attackMs": 191.7
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "banjo.zip",
          "member": "banjo_A3_very-long_forte_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "A3",
          "label": "A3 / very-long / forte / normal",
          "sha256": "aa9dd94cee58d94f29b9a0194e43b94e1c88367132ec6e444babda49fdc9e91d",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 57,
          "features": {
            "rms": 0.03245863098621866,
            "centroidHz": 711.1,
            "centroidVariationPercent": 54.5,
            "upperEnergyPercent": 0.44,
            "attackMs": 193.7
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "banjo.zip",
          "member": "banjo_A4_very-long_forte_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "A4",
          "label": "A4 / very-long / forte / normal",
          "sha256": "f8cb0b00f0cce0a2785be467e111531aee97a3137c655226a08d1bf0c8b34595",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 69,
          "features": {
            "rms": 0.027354757208147066,
            "centroidHz": 1007.3,
            "centroidVariationPercent": 29.6,
            "upperEnergyPercent": 13.84,
            "attackMs": 196.4
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/banjo.png",
      "referenceSpectrum": "../timbre-atlas/banjo-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "ukulele",
      "name": "ukulele",
      "family": "ukulele",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-ukulele-1.0.0.mp3",
          "settingsSha256": "62a779847704db8cbda9c30bbd75304cede3e7fcac638cf8d92a92bb086d3d9f",
          "image": "history-ukulele-1.0.0.png",
          "sha256": "2b3fea136a7c8f2e89aa96463cccdb786b6ba02c9fd5ffb13892a8c87f679e92"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-ukulele-1.1.0.mp3",
          "settingsSha256": "7e35893d762389d37fe885efdf709de34cca4b3bde53be3ddf9e822458c34f84",
          "image": "history-ukulele-1.1.0.png",
          "sha256": "753a8e71e690cfc9a151dc4d00cbc2f7276caf7d2ef3f44145e289b0b5091e5d"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-ukulele-1.2.1.mp3",
          "settingsSha256": "ddb7851e1586874dd25c6daf44f9d5e67fa1f2e804b955bf01096271ba6ccb63",
          "image": "history-ukulele-1.2.1.png",
          "sha256": "27e68ed506f3f9b4d7e86e2dbec8c7e6dd26839a16909a5aa8707c39f3282868"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-ukulele-1.3.0.mp3",
          "settingsSha256": "9199abdd445eedaffef80d34ba4748a7249f27e11f15771f4b3cf35d6314daf4",
          "image": "history-ukulele-1.3.0.png",
          "sha256": "c86d0463fdf81cadaa41f72a997ee83d821e17924b498fedce1d026001a05fae"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-ukulele-1.4.0.mp3",
          "settingsSha256": "9199abdd445eedaffef80d34ba4748a7249f27e11f15771f4b3cf35d6314daf4",
          "unchangedFrom": "1.3.0",
          "image": "history-ukulele-1.4.0.png",
          "sha256": "c86d0463fdf81cadaa41f72a997ee83d821e17924b498fedce1d026001a05fae"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-ukulele-3.5.0.mp3",
          "settingsSha256": "9199abdd445eedaffef80d34ba4748a7249f27e11f15771f4b3cf35d6314daf4",
          "unchangedFrom": "1.4.0",
          "image": "history-ukulele-3.5.0.png",
          "sha256": "c86d0463fdf81cadaa41f72a997ee83d821e17924b498fedce1d026001a05fae"
        }
      ],
      "references": [
        {
          "url": "https://upload.wikimedia.org/wikipedia/commons/3/30/C_Major_Scale_Ukulele.ogg",
          "sourceUrl": "https://commons.wikimedia.org/wiki/File:C_Major_Scale_Ukulele.ogg",
          "source": "Washing Machine / Wikimedia Commons",
          "license": "CC0",
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "label": "C Major Scale Ukulele.ogg",
          "note": null,
          "contextual": true,
          "sha256": "648283431488eb37aa9735fe316967efbf2007ddaab48a6a567fae649f3f9883",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": null,
          "features": {
            "rms": 0.05435171560583134,
            "centroidHz": 333,
            "centroidVariationPercent": 13.1,
            "upperEnergyPercent": 0,
            "attackMs": 45.7
          },
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://upload.wikimedia.org/wikipedia/commons/8/87/Ukulele_GCEA_cordes_a_vide.ogg",
          "sourceUrl": "https://commons.wikimedia.org/wiki/File:Ukulele_GCEA_cordes_a_vide.ogg",
          "source": "The original uploader was  Ukulele  at  French Wikipedia . / Wikimedia Commons",
          "license": "CC BY-SA 3.0",
          "licenseUrl": "https://creativecommons.org/licenses/by-sa/3.0/",
          "label": "Ukulele GCEA cordes a vide.ogg",
          "note": null,
          "contextual": true,
          "sha256": "d73e2f20bd17a0990f7658ef2b22ca5927973ce3525d3abdb5a4aa8a25af3fae",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": null,
          "features": {
            "rms": 0.06929308755835839,
            "centroidHz": 491.4,
            "centroidVariationPercent": 20.2,
            "upperEnergyPercent": 0.64,
            "attackMs": 33.6
          },
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://upload.wikimedia.org/wikipedia/commons/c/c3/Ukulele_playing.ogg",
          "sourceUrl": "https://commons.wikimedia.org/wiki/File:Ukulele_playing.ogg",
          "source": "Cassa342 / Wikimedia Commons",
          "license": "CC BY-SA 4.0",
          "licenseUrl": "https://creativecommons.org/licenses/by-sa/4.0/",
          "label": "Ukulele playing.ogg",
          "note": null,
          "contextual": true,
          "sha256": "4d4216792d9ba1d9282779d074c389bad6ef646169ba585b6425275c9f4a1cd9",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": null,
          "features": {
            "rms": 0.060984309294888496,
            "centroidHz": 351.1,
            "centroidVariationPercent": 25.3,
            "upperEnergyPercent": 1.4,
            "attackMs": 2415.5
          },
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/ukulele.png",
      "referenceSpectrum": "../timbre-atlas/ukulele-spectrum.png",
      "coverage": "instrument",
      "contextual": true
    },
    {
      "id": "shamisen",
      "name": "shamisen",
      "family": "shamisen",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-shamisen-1.0.0.mp3",
          "settingsSha256": "b526e8394dba05fd2bf53c3c069220b0fd7b575cee3ad229730322ce68d4165e",
          "image": "history-shamisen-1.0.0.png",
          "sha256": "7f604a6ba8b5df9c8a0489968fc89af9cb532f5c50e8c09e99503d96d11fb188"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-shamisen-1.1.0.mp3",
          "settingsSha256": "6c8cc57be4799fbf5a862c0b4eb7c449a003826846a41fefcef1d650d7553649",
          "image": "history-shamisen-1.1.0.png",
          "sha256": "a15bcc1d3eded36a626c885abd7fa2a9c7d0e31e9f13d77b40a9e27d31f9ebf9"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-shamisen-1.2.1.mp3",
          "settingsSha256": "6c8cc57be4799fbf5a862c0b4eb7c449a003826846a41fefcef1d650d7553649",
          "unchangedFrom": "1.1.0",
          "image": "history-shamisen-1.2.1.png",
          "sha256": "a15bcc1d3eded36a626c885abd7fa2a9c7d0e31e9f13d77b40a9e27d31f9ebf9"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-shamisen-1.3.0.mp3",
          "settingsSha256": "6c8cc57be4799fbf5a862c0b4eb7c449a003826846a41fefcef1d650d7553649",
          "unchangedFrom": "1.2.1",
          "image": "history-shamisen-1.3.0.png",
          "sha256": "a15bcc1d3eded36a626c885abd7fa2a9c7d0e31e9f13d77b40a9e27d31f9ebf9"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-shamisen-1.4.0.mp3",
          "settingsSha256": "6c8cc57be4799fbf5a862c0b4eb7c449a003826846a41fefcef1d650d7553649",
          "unchangedFrom": "1.3.0",
          "image": "history-shamisen-1.4.0.png",
          "sha256": "a15bcc1d3eded36a626c885abd7fa2a9c7d0e31e9f13d77b40a9e27d31f9ebf9"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-shamisen-3.5.0.mp3",
          "settingsSha256": "6c8cc57be4799fbf5a862c0b4eb7c449a003826846a41fefcef1d650d7553649",
          "unchangedFrom": "1.4.0",
          "image": "history-shamisen-3.5.0.png",
          "sha256": "a15bcc1d3eded36a626c885abd7fa2a9c7d0e31e9f13d77b40a9e27d31f9ebf9"
        }
      ],
      "references": [
        {
          "url": "https://cdn.freesound.org/previews/721/721267_14549132-hq.mp3",
          "sourceUrl": "https://freesound.org/people/claywh/sounds/721267/",
          "source": "pflanigan, edited by claywh",
          "license": "CC0",
          "label": "Shamisen performance; slowed 25%, noise reduced, reverb added; compressed preview; excerpt at 2s",
          "note": null,
          "contextual": true,
          "start": 2,
          "sha256": "e3c83a9d4b458afa871f25d22f7be80def067d82be22f6f2b452b7ed097a9c5f",
          "noteOffset": 0,
          "measuredMidi": null,
          "features": {
            "rms": 0.18338068831445725,
            "centroidHz": 1225.6,
            "centroidVariationPercent": 24.4,
            "upperEnergyPercent": 17.66,
            "attackMs": 160.5
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://cdn.freesound.org/previews/721/721267_14549132-hq.mp3",
          "sourceUrl": "https://freesound.org/people/claywh/sounds/721267/",
          "source": "pflanigan, edited by claywh",
          "license": "CC0",
          "label": "Shamisen performance; slowed 25%, noise reduced, reverb added; compressed preview; excerpt at 12s",
          "note": null,
          "contextual": true,
          "start": 12,
          "sha256": "e3c83a9d4b458afa871f25d22f7be80def067d82be22f6f2b452b7ed097a9c5f",
          "noteOffset": 0,
          "measuredMidi": null,
          "features": {
            "rms": 0.19109618308172563,
            "centroidHz": 1313.3,
            "centroidVariationPercent": 27.8,
            "upperEnergyPercent": 13.23,
            "attackMs": 1180.5
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://cdn.freesound.org/previews/721/721267_14549132-hq.mp3",
          "sourceUrl": "https://freesound.org/people/claywh/sounds/721267/",
          "source": "pflanigan, edited by claywh",
          "license": "CC0",
          "label": "Shamisen performance; slowed 25%, noise reduced, reverb added; compressed preview; excerpt at 22s",
          "note": null,
          "contextual": true,
          "start": 22,
          "sha256": "e3c83a9d4b458afa871f25d22f7be80def067d82be22f6f2b452b7ed097a9c5f",
          "noteOffset": 0,
          "measuredMidi": null,
          "features": {
            "rms": 0.11458366039641363,
            "centroidHz": 996.7,
            "centroidVariationPercent": 26.5,
            "upperEnergyPercent": 9.62,
            "attackMs": 415.9
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/shamisen.png",
      "referenceSpectrum": "../timbre-atlas/shamisen-spectrum.png",
      "coverage": "instrument",
      "contextual": true
    },
    {
      "id": "koto",
      "name": "koto",
      "family": "koto",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-koto-1.0.0.mp3",
          "settingsSha256": "e4fdb2e082def1ef8c77fa109003ee7b5d282f226298ee00919f2bfafb1796f0",
          "image": "history-koto-1.0.0.png",
          "sha256": "4842fc2d42b69accb7b57485930e64ed7fe03786524bdb538104e3915ac7339c"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-koto-1.1.0.mp3",
          "settingsSha256": "1abab588e7930b9d0785899d705be1b355930fc4403fe5bd2a5ae8ea8eae835e",
          "image": "history-koto-1.1.0.png",
          "sha256": "3eb321ada672729ddfa669393ed92c15d10de2aef053888530bea46f11c39eb8"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-koto-1.2.1.mp3",
          "settingsSha256": "b7c4c981438f4e0062cab95314b8a2d3c13aa859138cabc09508f9c1762bec30",
          "image": "history-koto-1.2.1.png",
          "sha256": "23382564d66d52fc46f3aeac00d72b29837c480c92e39fa72a2798c60ae5165b"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-koto-1.3.0.mp3",
          "settingsSha256": "b7c4c981438f4e0062cab95314b8a2d3c13aa859138cabc09508f9c1762bec30",
          "unchangedFrom": "1.2.1",
          "image": "history-koto-1.3.0.png",
          "sha256": "23382564d66d52fc46f3aeac00d72b29837c480c92e39fa72a2798c60ae5165b"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-koto-1.4.0.mp3",
          "settingsSha256": "b7c4c981438f4e0062cab95314b8a2d3c13aa859138cabc09508f9c1762bec30",
          "unchangedFrom": "1.3.0",
          "image": "history-koto-1.4.0.png",
          "sha256": "23382564d66d52fc46f3aeac00d72b29837c480c92e39fa72a2798c60ae5165b"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-koto-3.5.0.mp3",
          "settingsSha256": "b7c4c981438f4e0062cab95314b8a2d3c13aa859138cabc09508f9c1762bec30",
          "unchangedFrom": "1.4.0",
          "image": "history-koto-3.5.0.png",
          "sha256": "23382564d66d52fc46f3aeac00d72b29837c480c92e39fa72a2798c60ae5165b"
        }
      ],
      "references": [
        {
          "url": "https://upload.wikimedia.org/wikipedia/commons/2/2e/Koto_performance.ogg",
          "sourceUrl": "https://commons.wikimedia.org/wiki/File:Koto_performance.ogg",
          "source": "Torsodog / Wikimedia Commons",
          "license": "CC BY 3.0",
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "label": "koto performance excerpt 1 of 3 (same recording)",
          "note": null,
          "excerpt": 0,
          "contextual": true,
          "sha256": "86286894ddbb110cbb2c0f05eeb2e39a4358a48fe0de92dcbf5426fd62b48bca",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": null,
          "features": {
            "rms": 0.2009426450839753,
            "centroidHz": 1144.1,
            "centroidVariationPercent": 13.9,
            "upperEnergyPercent": 2.65,
            "attackMs": 214.4
          },
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://upload.wikimedia.org/wikipedia/commons/2/2e/Koto_performance.ogg",
          "sourceUrl": "https://commons.wikimedia.org/wiki/File:Koto_performance.ogg",
          "source": "Torsodog / Wikimedia Commons",
          "license": "CC BY 3.0",
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "label": "koto performance excerpt 2 of 3 (same recording)",
          "note": null,
          "excerpt": 1,
          "contextual": true,
          "sha256": "86286894ddbb110cbb2c0f05eeb2e39a4358a48fe0de92dcbf5426fd62b48bca",
          "noteOffset": 0,
          "start": 13.368,
          "measuredMidi": null,
          "features": {
            "rms": 0.17112414357292935,
            "centroidHz": 1288.1,
            "centroidVariationPercent": 9.3,
            "upperEnergyPercent": 2.76,
            "attackMs": 1584.6
          },
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://upload.wikimedia.org/wikipedia/commons/2/2e/Koto_performance.ogg",
          "sourceUrl": "https://commons.wikimedia.org/wiki/File:Koto_performance.ogg",
          "source": "Torsodog / Wikimedia Commons",
          "license": "CC BY 3.0",
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "label": "koto performance excerpt 3 of 3 (same recording)",
          "note": null,
          "excerpt": 2,
          "contextual": true,
          "sha256": "86286894ddbb110cbb2c0f05eeb2e39a4358a48fe0de92dcbf5426fd62b48bca",
          "noteOffset": 0,
          "start": 26.736,
          "measuredMidi": null,
          "features": {
            "rms": 0.14383055839020686,
            "centroidHz": 1334,
            "centroidVariationPercent": 15.6,
            "upperEnergyPercent": 19.73,
            "attackMs": 1436.6
          },
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/koto.png",
      "referenceSpectrum": "../timbre-atlas/koto-spectrum.png",
      "coverage": "instrument",
      "contextual": true
    },
    {
      "id": "overdrive-guitar",
      "name": "overdrive guitar",
      "family": "electric-guitar",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-overdrive-guitar-1.0.0.mp3",
          "settingsSha256": "71a76b38c5329545ec9f64ccb1f5c6142f6374b3411a4fec9d9e0436d3ae1711",
          "image": "history-overdrive-guitar-1.0.0.png",
          "sha256": "9d96bd0b22afe7fb3f80a259fc7a91b4410a7a41547031ebf28fc001de8cdd9f"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-overdrive-guitar-1.1.0.mp3",
          "settingsSha256": "33f2f216ca69892fd43aa5ea1a05a40beab6a49af19f0bfab63d0e24bb6d21ca",
          "image": "history-overdrive-guitar-1.1.0.png",
          "sha256": "a3b1fc2e0313408c613b3f471556fbc3114be30fb50936e4b6ef6c8a25ad05a2"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-overdrive-guitar-1.2.1.mp3",
          "settingsSha256": "ce2f5096cf6901099086f79289b54392deb643931bb49b73be85b026a3a848d4",
          "image": "history-overdrive-guitar-1.2.1.png",
          "sha256": "2e26566ccc1055f7f48f008dc17a8b738673d5b71daeec7df5d7c524c70641a1"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-overdrive-guitar-1.3.0.mp3",
          "settingsSha256": "ce2f5096cf6901099086f79289b54392deb643931bb49b73be85b026a3a848d4",
          "unchangedFrom": "1.2.1",
          "image": "history-overdrive-guitar-1.3.0.png",
          "sha256": "2e26566ccc1055f7f48f008dc17a8b738673d5b71daeec7df5d7c524c70641a1"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-overdrive-guitar-1.4.0.mp3",
          "settingsSha256": "ce2f5096cf6901099086f79289b54392deb643931bb49b73be85b026a3a848d4",
          "unchangedFrom": "1.3.0",
          "image": "history-overdrive-guitar-1.4.0.png",
          "sha256": "2e26566ccc1055f7f48f008dc17a8b738673d5b71daeec7df5d7c524c70641a1"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-overdrive-guitar-3.5.0.mp3",
          "settingsSha256": "ce2f5096cf6901099086f79289b54392deb643931bb49b73be85b026a3a848d4",
          "unchangedFrom": "1.4.0",
          "image": "history-overdrive-guitar-3.5.0.png",
          "sha256": "2e26566ccc1055f7f48f008dc17a8b738673d5b71daeec7df5d7c524c70641a1"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/guitar-electric/A3.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/guitar-electric/A3.wav",
          "license": "CC BY 3.0",
          "label": "A3",
          "note": "A3",
          "sha256": "42b03c0478f4f2c0494fcfe8dc1b882b2be54d92e99f13bdf05ba8dc5dd9b8e9",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 57,
          "features": {
            "rms": 0.06037785874447921,
            "centroidHz": 433.2,
            "centroidVariationPercent": 10.6,
            "upperEnergyPercent": 0.1,
            "attackMs": 5.4
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/guitar-electric/C3.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/guitar-electric/C3.wav",
          "license": "CC BY 3.0",
          "label": "C3",
          "note": "C3",
          "sha256": "21e33e8d4babafd7497bc5e37b28fdc576be15942e8c627124e507b39f655d68",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 48,
          "features": {
            "rms": 0.04845819158053102,
            "centroidHz": 239.6,
            "centroidVariationPercent": 15.6,
            "upperEnergyPercent": 0,
            "attackMs": 7.6
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/guitar-electric/A2.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/guitar-electric/A2.wav",
          "license": "CC BY 3.0",
          "label": "A2",
          "note": "A2",
          "sha256": "80cd321487275a1116370094d43f7a4522d1d22150fa1734952266c25f5224ba",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 45,
          "features": {
            "rms": 0.05118294796309013,
            "centroidHz": 240.5,
            "centroidVariationPercent": 23.8,
            "upperEnergyPercent": 0,
            "attackMs": 5.9
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/overdrive-guitar.png",
      "referenceSpectrum": "../timbre-atlas/overdrive-guitar-spectrum.png",
      "coverage": "related",
      "contextual": false
    },
    {
      "id": "distortion-guitar",
      "name": "distortion guitar",
      "family": "electric-guitar",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-distortion-guitar-1.0.0.mp3",
          "settingsSha256": "0377a6bf2838e77fc15df31da4a84e0ac9ef3a331c0a4bc3107ad3cb8d8c7dc0",
          "image": "history-distortion-guitar-1.0.0.png",
          "sha256": "fa0480e2596a736d92a570fb5d15570d3de5cc30f94f34bb0e08fde0ee96262c"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-distortion-guitar-1.1.0.mp3",
          "settingsSha256": "92595ce1cde75072a6dbd80a7f5141a911e584822b2a3263c9b06995bcb3d170",
          "image": "history-distortion-guitar-1.1.0.png",
          "sha256": "3e7daee3db71a9b073597ade2171d2f70ad91ed51add488fd4e83f68fdf74786"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-distortion-guitar-1.2.1.mp3",
          "settingsSha256": "8f3741d39277b0a932420dc33e621e5288b0e082ef4047f2151d96747909d9da",
          "image": "history-distortion-guitar-1.2.1.png",
          "sha256": "0c0b233ad8ac387055b175b20a8685ef58a69afcf31ab28a91cfadf5b1013d07"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-distortion-guitar-1.3.0.mp3",
          "settingsSha256": "8f3741d39277b0a932420dc33e621e5288b0e082ef4047f2151d96747909d9da",
          "unchangedFrom": "1.2.1",
          "image": "history-distortion-guitar-1.3.0.png",
          "sha256": "0c0b233ad8ac387055b175b20a8685ef58a69afcf31ab28a91cfadf5b1013d07"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-distortion-guitar-1.4.0.mp3",
          "settingsSha256": "8f3741d39277b0a932420dc33e621e5288b0e082ef4047f2151d96747909d9da",
          "unchangedFrom": "1.3.0",
          "image": "history-distortion-guitar-1.4.0.png",
          "sha256": "0c0b233ad8ac387055b175b20a8685ef58a69afcf31ab28a91cfadf5b1013d07"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-distortion-guitar-3.5.0.mp3",
          "settingsSha256": "8f3741d39277b0a932420dc33e621e5288b0e082ef4047f2151d96747909d9da",
          "unchangedFrom": "1.4.0",
          "image": "history-distortion-guitar-3.5.0.png",
          "sha256": "0c0b233ad8ac387055b175b20a8685ef58a69afcf31ab28a91cfadf5b1013d07"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/guitar-electric/A3.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/guitar-electric/A3.wav",
          "license": "CC BY 3.0",
          "label": "A3",
          "note": "A3",
          "sha256": "42b03c0478f4f2c0494fcfe8dc1b882b2be54d92e99f13bdf05ba8dc5dd9b8e9",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 57,
          "features": {
            "rms": 0.06037785874447921,
            "centroidHz": 433.2,
            "centroidVariationPercent": 10.6,
            "upperEnergyPercent": 0.1,
            "attackMs": 5.4
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/guitar-electric/C3.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/guitar-electric/C3.wav",
          "license": "CC BY 3.0",
          "label": "C3",
          "note": "C3",
          "sha256": "21e33e8d4babafd7497bc5e37b28fdc576be15942e8c627124e507b39f655d68",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 48,
          "features": {
            "rms": 0.04845819158053102,
            "centroidHz": 239.6,
            "centroidVariationPercent": 15.6,
            "upperEnergyPercent": 0,
            "attackMs": 7.6
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/guitar-electric/A2.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/guitar-electric/A2.wav",
          "license": "CC BY 3.0",
          "label": "A2",
          "note": "A2",
          "sha256": "80cd321487275a1116370094d43f7a4522d1d22150fa1734952266c25f5224ba",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 45,
          "features": {
            "rms": 0.05118294796309013,
            "centroidHz": 240.5,
            "centroidVariationPercent": 23.8,
            "upperEnergyPercent": 0,
            "attackMs": 5.9
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/distortion-guitar.png",
      "referenceSpectrum": "../timbre-atlas/distortion-guitar-spectrum.png",
      "coverage": "related",
      "contextual": false
    },
    {
      "id": "guitar-harmonics",
      "name": "guitar harmonics",
      "family": "guitar-harmonics",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-guitar-harmonics-1.0.0.mp3",
          "settingsSha256": "fc7e3670921e995d0f55e09c7d23071b6b139ef47ca31b2010a3fcb25a1b8388",
          "image": "history-guitar-harmonics-1.0.0.png",
          "sha256": "3322b448212e7d581c3095d6732f9ec123527565d2fa347ae23352b67da1c71f"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-guitar-harmonics-1.1.0.mp3",
          "settingsSha256": "a5d21b8ee130f2f9e72d2737e18c6a5d71732829a5670811b6d3064db8bfad09",
          "image": "history-guitar-harmonics-1.1.0.png",
          "sha256": "d4802b3cf0f351fb2c01a68b97f39e3114583179c6f24a259e5a14e27ce728eb"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-guitar-harmonics-1.2.1.mp3",
          "settingsSha256": "89c50abb5c121e95ecc82833b237071c6a0360750746ffbb84631b2411cb2053",
          "image": "history-guitar-harmonics-1.2.1.png",
          "sha256": "6583a6f697dea1bd05ca1c3e97a16c8a0d20752f60a77d6db7d3c3560315ba0b"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-guitar-harmonics-1.3.0.mp3",
          "settingsSha256": "89c50abb5c121e95ecc82833b237071c6a0360750746ffbb84631b2411cb2053",
          "unchangedFrom": "1.2.1",
          "image": "history-guitar-harmonics-1.3.0.png",
          "sha256": "6583a6f697dea1bd05ca1c3e97a16c8a0d20752f60a77d6db7d3c3560315ba0b"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-guitar-harmonics-1.4.0.mp3",
          "settingsSha256": "89c50abb5c121e95ecc82833b237071c6a0360750746ffbb84631b2411cb2053",
          "unchangedFrom": "1.3.0",
          "image": "history-guitar-harmonics-1.4.0.png",
          "sha256": "6583a6f697dea1bd05ca1c3e97a16c8a0d20752f60a77d6db7d3c3560315ba0b"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-guitar-harmonics-3.5.0.mp3",
          "settingsSha256": "89c50abb5c121e95ecc82833b237071c6a0360750746ffbb84631b2411cb2053",
          "unchangedFrom": "1.4.0",
          "image": "history-guitar-harmonics-3.5.0.png",
          "sha256": "6583a6f697dea1bd05ca1c3e97a16c8a0d20752f60a77d6db7d3c3560315ba0b"
        }
      ],
      "references": [
        {
          "archive": "guitar.zip",
          "member": "guitar_A3_very-long_piano_harmonics.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "A3",
          "label": "A3 / very-long / piano / harmonics",
          "sha256": "2ca82d90f8e4de1b5e9a7d145855949bd3b21e2e6138b5917966031bfd3947a9",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 57,
          "features": {
            "rms": 0.005521294334245975,
            "centroidHz": 109.5,
            "centroidVariationPercent": 35.3,
            "upperEnergyPercent": 0,
            "attackMs": 1517.1
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "guitar.zip",
          "member": "guitar_A3_very-long_forte_harmonics.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "A3",
          "label": "A3 / very-long / forte / harmonics",
          "sha256": "517172124c8dd87248a424ddc411786cfb6a522de2d2c436c66d1e6479877787",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 57,
          "features": {
            "rms": 0.01983056566021127,
            "centroidHz": 365,
            "centroidVariationPercent": 10.8,
            "upperEnergyPercent": 0,
            "attackMs": 95.6
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "guitar.zip",
          "member": "guitar_A3_very-long_pianissimo_harmonics.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "A3",
          "label": "A3 / very-long / pianissimo / harmonics",
          "sha256": "37a1182b165e31ffce3bd44253d96092f2020a9189b1f8fbd3ae85831ee5009d",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 69,
          "features": {
            "rms": 0.007019543764828813,
            "centroidHz": 158.3,
            "centroidVariationPercent": 48.4,
            "upperEnergyPercent": 0,
            "attackMs": 58.9
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/guitar-harmonics.png",
      "referenceSpectrum": "../timbre-atlas/guitar-harmonics-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "reed-organ",
      "name": "reed organ",
      "family": "reed-organ",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-reed-organ-1.0.0.mp3",
          "settingsSha256": "e11be9af57a7aa5553b69d78285d0ecebe6e3eb010cd63d96c40057b967f2315",
          "image": "history-reed-organ-1.0.0.png",
          "sha256": "a08ce8171f8133f5d433b22654fe699c8c17c2e48e1e199f373fe9d54e82b65c"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-reed-organ-1.1.0.mp3",
          "settingsSha256": "bc972e26bb5f771b185dc706a7b946547dec4691bfcd72e87ace6a6cb7753e44",
          "image": "history-reed-organ-1.1.0.png",
          "sha256": "51b3c9acf1a7682615dba2c17b5803932eadea6d007780314358259aadf15bf8"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-reed-organ-1.2.1.mp3",
          "settingsSha256": "bc972e26bb5f771b185dc706a7b946547dec4691bfcd72e87ace6a6cb7753e44",
          "unchangedFrom": "1.1.0",
          "image": "history-reed-organ-1.2.1.png",
          "sha256": "51b3c9acf1a7682615dba2c17b5803932eadea6d007780314358259aadf15bf8"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-reed-organ-1.3.0.mp3",
          "settingsSha256": "bc972e26bb5f771b185dc706a7b946547dec4691bfcd72e87ace6a6cb7753e44",
          "unchangedFrom": "1.2.1",
          "image": "history-reed-organ-1.3.0.png",
          "sha256": "51b3c9acf1a7682615dba2c17b5803932eadea6d007780314358259aadf15bf8"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-reed-organ-1.4.0.mp3",
          "settingsSha256": "bc972e26bb5f771b185dc706a7b946547dec4691bfcd72e87ace6a6cb7753e44",
          "unchangedFrom": "1.3.0",
          "image": "history-reed-organ-1.4.0.png",
          "sha256": "51b3c9acf1a7682615dba2c17b5803932eadea6d007780314358259aadf15bf8"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-reed-organ-3.5.0.mp3",
          "settingsSha256": "bc972e26bb5f771b185dc706a7b946547dec4691bfcd72e87ace6a6cb7753e44",
          "unchangedFrom": "1.4.0",
          "image": "history-reed-organ-3.5.0.png",
          "sha256": "51b3c9acf1a7682615dba2c17b5803932eadea6d007780314358259aadf15bf8"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/harmonium/A3.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/harmonium/A3.wav",
          "license": "CC BY 3.0",
          "label": "A3",
          "note": "A3",
          "sha256": "2610383aba1382b3c18a322ab20e1828faadb89301f2698d8ba713876a8e2231",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 57,
          "features": {
            "rms": 0.1667744535301229,
            "centroidHz": 1181.2,
            "centroidVariationPercent": 21.1,
            "upperEnergyPercent": 21.2,
            "attackMs": 249.4
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/harmonium/C3.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/harmonium/C3.wav",
          "license": "CC BY 3.0",
          "label": "C3",
          "note": "C3",
          "sha256": "282bd24bfbfd68b7f609272da7b0c5f406de72b4741c5b5c51f5451a50dfcc3c",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 48,
          "features": {
            "rms": 0.14098097614311714,
            "centroidHz": 665.6,
            "centroidVariationPercent": 6.2,
            "upperEnergyPercent": 3.95,
            "attackMs": 853.7
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/harmonium/E3.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/harmonium/E3.wav",
          "license": "CC BY 3.0",
          "label": "E3",
          "note": "E3",
          "sha256": "aee6771544ba291fd7cebb68c0f32621c8debea14f88dc704a294a4f50f83295",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 52,
          "features": {
            "rms": 0.15462598594574717,
            "centroidHz": 937.9,
            "centroidVariationPercent": 8.3,
            "upperEnergyPercent": 8.33,
            "attackMs": 341.4
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/reed-organ.png",
      "referenceSpectrum": "../timbre-atlas/reed-organ-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "accordion",
      "name": "accordion",
      "family": "accordion",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-accordion-1.0.0.mp3",
          "settingsSha256": "3c635c29bc8fdda2ff4fa2c992605a5edd2ba61743d5763fa02dc7a617d6ce65",
          "image": "history-accordion-1.0.0.png",
          "sha256": "e9ce4b50f1951e5e6fe10fa21894799105e1a3e3d0dadb96df76360cc599b6ff"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-accordion-1.1.0.mp3",
          "settingsSha256": "2e53af8e3a2957f0b8fabec4a1f84bd4b453afe3d0f44422a5861c08adb23299",
          "image": "history-accordion-1.1.0.png",
          "sha256": "bdfa08b41017a48cc912c41d83bdb0cdbaffc698c65b6b042c5536c55ffff0c9"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-accordion-1.2.1.mp3",
          "settingsSha256": "2e53af8e3a2957f0b8fabec4a1f84bd4b453afe3d0f44422a5861c08adb23299",
          "unchangedFrom": "1.1.0",
          "image": "history-accordion-1.2.1.png",
          "sha256": "bdfa08b41017a48cc912c41d83bdb0cdbaffc698c65b6b042c5536c55ffff0c9"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-accordion-1.3.0.mp3",
          "settingsSha256": "2e53af8e3a2957f0b8fabec4a1f84bd4b453afe3d0f44422a5861c08adb23299",
          "unchangedFrom": "1.2.1",
          "image": "history-accordion-1.3.0.png",
          "sha256": "bdfa08b41017a48cc912c41d83bdb0cdbaffc698c65b6b042c5536c55ffff0c9"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-accordion-1.4.0.mp3",
          "settingsSha256": "2e53af8e3a2957f0b8fabec4a1f84bd4b453afe3d0f44422a5861c08adb23299",
          "unchangedFrom": "1.3.0",
          "image": "history-accordion-1.4.0.png",
          "sha256": "bdfa08b41017a48cc912c41d83bdb0cdbaffc698c65b6b042c5536c55ffff0c9"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-accordion-3.5.0.mp3",
          "settingsSha256": "2e53af8e3a2957f0b8fabec4a1f84bd4b453afe3d0f44422a5861c08adb23299",
          "unchangedFrom": "1.4.0",
          "image": "history-accordion-3.5.0.png",
          "sha256": "bdfa08b41017a48cc912c41d83bdb0cdbaffc698c65b6b042c5536c55ffff0c9"
        }
      ],
      "references": [
        {
          "url": "https://cdn.freesound.org/previews/120/120715_649468-hq.mp3",
          "sourceUrl": "https://freesound.org/people/juskiddink/sounds/120715/",
          "source": "Freesound - Accordion Notes.wav by juskiddink",
          "license": "CC BY 4.0",
          "label": "Freesound - Accordion Notes.wav by juskiddink; compressed preview; excerpt 1 of one recording",
          "note": null,
          "sha256": "5506c3441c0ebf41b6c6ccc5b30a145d2aa7aae7f8ecfa36c0e348ac81ee5f5e",
          "noteOffset": 0,
          "contextual": true,
          "excerpt": 0,
          "start": 0,
          "measuredMidi": null,
          "features": {
            "rms": 0.776900670578647,
            "centroidHz": 1610.2,
            "centroidVariationPercent": 0.2,
            "upperEnergyPercent": 1.01,
            "attackMs": 604
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://cdn.freesound.org/previews/120/120715_649468-hq.mp3",
          "sourceUrl": "https://freesound.org/people/juskiddink/sounds/120715/",
          "source": "Freesound - Accordion Notes.wav by juskiddink",
          "license": "CC BY 4.0",
          "label": "Freesound - Accordion Notes.wav by juskiddink; compressed preview; excerpt 2 of one recording",
          "note": null,
          "sha256": "5506c3441c0ebf41b6c6ccc5b30a145d2aa7aae7f8ecfa36c0e348ac81ee5f5e",
          "noteOffset": 0,
          "contextual": true,
          "excerpt": 1,
          "start": 10.737,
          "measuredMidi": null,
          "features": {
            "rms": 0.43331769176215684,
            "centroidHz": 658.5,
            "centroidVariationPercent": 0.2,
            "upperEnergyPercent": 1.28,
            "attackMs": 4.2
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://cdn.freesound.org/previews/120/120715_649468-hq.mp3",
          "sourceUrl": "https://freesound.org/people/juskiddink/sounds/120715/",
          "source": "Freesound - Accordion Notes.wav by juskiddink",
          "license": "CC BY 4.0",
          "label": "Freesound - Accordion Notes.wav by juskiddink; compressed preview; excerpt 3 of one recording",
          "note": null,
          "sha256": "5506c3441c0ebf41b6c6ccc5b30a145d2aa7aae7f8ecfa36c0e348ac81ee5f5e",
          "noteOffset": 0,
          "contextual": true,
          "excerpt": 2,
          "start": 21.475,
          "measuredMidi": null,
          "features": {
            "rms": 0.275355768175779,
            "centroidHz": 876.5,
            "centroidVariationPercent": 2,
            "upperEnergyPercent": 0.52,
            "attackMs": 396.3
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/accordion.png",
      "referenceSpectrum": "../timbre-atlas/accordion-spectrum.png",
      "coverage": "instrument",
      "contextual": true
    },
    {
      "id": "bandoneon",
      "name": "bandoneon",
      "family": "bandoneon",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-bandoneon-1.0.0.mp3",
          "settingsSha256": "24ff90137af95a4226d95f699b6f7a7721988de1271266c1e9c431ae002f4392",
          "image": "history-bandoneon-1.0.0.png",
          "sha256": "825d9fd45b29dbdf668806aa1abdae97a67fcb69c6a83f861d250bc56094be14"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-bandoneon-1.1.0.mp3",
          "settingsSha256": "957647b975106364adce028a45875bc8d5760dda816100442243cbc5f8f3fd26",
          "image": "history-bandoneon-1.1.0.png",
          "sha256": "63eb7235786d7c5c06fc0348ddc7bccdae78983ef320824099b59d885f0bff4c"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-bandoneon-1.2.1.mp3",
          "settingsSha256": "957647b975106364adce028a45875bc8d5760dda816100442243cbc5f8f3fd26",
          "unchangedFrom": "1.1.0",
          "image": "history-bandoneon-1.2.1.png",
          "sha256": "63eb7235786d7c5c06fc0348ddc7bccdae78983ef320824099b59d885f0bff4c"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-bandoneon-1.3.0.mp3",
          "settingsSha256": "957647b975106364adce028a45875bc8d5760dda816100442243cbc5f8f3fd26",
          "unchangedFrom": "1.2.1",
          "image": "history-bandoneon-1.3.0.png",
          "sha256": "63eb7235786d7c5c06fc0348ddc7bccdae78983ef320824099b59d885f0bff4c"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-bandoneon-1.4.0.mp3",
          "settingsSha256": "957647b975106364adce028a45875bc8d5760dda816100442243cbc5f8f3fd26",
          "unchangedFrom": "1.3.0",
          "image": "history-bandoneon-1.4.0.png",
          "sha256": "63eb7235786d7c5c06fc0348ddc7bccdae78983ef320824099b59d885f0bff4c"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-bandoneon-3.5.0.mp3",
          "settingsSha256": "957647b975106364adce028a45875bc8d5760dda816100442243cbc5f8f3fd26",
          "unchangedFrom": "1.4.0",
          "image": "history-bandoneon-3.5.0.png",
          "sha256": "63eb7235786d7c5c06fc0348ddc7bccdae78983ef320824099b59d885f0bff4c"
        }
      ],
      "references": [
        {
          "url": "https://upload.wikimedia.org/wikipedia/commons/a/ab/Bandone%C3%B3n.ogg",
          "sourceUrl": "https://commons.wikimedia.org/wiki/File:Bandone%C3%B3n.ogg",
          "source": "Poniol60",
          "license": "CC BY-SA 3.0",
          "label": "Performance excerpt 1; recording method unspecified",
          "note": null,
          "contextual": true,
          "excerpt": 0,
          "sha256": "ed1f30736c9c8b529cee412f887f39cd969863e56a5d30092c86b81c0c57b5bb",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": null,
          "features": {
            "rms": 0.05594198151370303,
            "centroidHz": 222.5,
            "centroidVariationPercent": 48.2,
            "upperEnergyPercent": 0.56,
            "attackMs": 291.7
          },
          "licenseUrl": "https://creativecommons.org/licenses/by-sa/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://upload.wikimedia.org/wikipedia/commons/a/ab/Bandone%C3%B3n.ogg",
          "sourceUrl": "https://commons.wikimedia.org/wiki/File:Bandone%C3%B3n.ogg",
          "source": "Poniol60",
          "license": "CC BY-SA 3.0",
          "label": "Performance excerpt 2; recording method unspecified",
          "note": null,
          "contextual": true,
          "excerpt": 1,
          "sha256": "ed1f30736c9c8b529cee412f887f39cd969863e56a5d30092c86b81c0c57b5bb",
          "noteOffset": 0,
          "start": 7.475,
          "measuredMidi": null,
          "features": {
            "rms": 0.11567482779511884,
            "centroidHz": 408.6,
            "centroidVariationPercent": 49.4,
            "upperEnergyPercent": 1.74,
            "attackMs": 1417
          },
          "licenseUrl": "https://creativecommons.org/licenses/by-sa/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://upload.wikimedia.org/wikipedia/commons/a/ab/Bandone%C3%B3n.ogg",
          "sourceUrl": "https://commons.wikimedia.org/wiki/File:Bandone%C3%B3n.ogg",
          "source": "Poniol60",
          "license": "CC BY-SA 3.0",
          "label": "Performance excerpt 3; recording method unspecified",
          "note": null,
          "contextual": true,
          "excerpt": 2,
          "sha256": "ed1f30736c9c8b529cee412f887f39cd969863e56a5d30092c86b81c0c57b5bb",
          "noteOffset": 0,
          "start": 14.95,
          "measuredMidi": null,
          "features": {
            "rms": 0.10122058334684418,
            "centroidHz": 484.9,
            "centroidVariationPercent": 82.8,
            "upperEnergyPercent": 3.84,
            "attackMs": 265.8
          },
          "licenseUrl": "https://creativecommons.org/licenses/by-sa/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/bandoneon.png",
      "referenceSpectrum": "../timbre-atlas/bandoneon-spectrum.png",
      "coverage": "instrument",
      "contextual": true
    },
    {
      "id": "bagpipe",
      "name": "bagpipe",
      "family": "bagpipe",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-bagpipe-1.0.0.mp3",
          "settingsSha256": "a6a63adedb162d55155adb5bdd680346afaae594ab83e32808519124199dd5cd",
          "image": "history-bagpipe-1.0.0.png",
          "sha256": "55f608bb376c16849c6687bdefd7480bb0da85441e27732e304e1a51de382267"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-bagpipe-1.1.0.mp3",
          "settingsSha256": "92dc5975c9059bdc881d7c15153cd1a9f342752eaf7ba638359431c09360ba4d",
          "image": "history-bagpipe-1.1.0.png",
          "sha256": "4b578ebe6d6b79dc817d0c3a9ca1f091118820b3bade3305a3f170b72539ddbf"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-bagpipe-1.2.1.mp3",
          "settingsSha256": "92dc5975c9059bdc881d7c15153cd1a9f342752eaf7ba638359431c09360ba4d",
          "unchangedFrom": "1.1.0",
          "image": "history-bagpipe-1.2.1.png",
          "sha256": "4b578ebe6d6b79dc817d0c3a9ca1f091118820b3bade3305a3f170b72539ddbf"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-bagpipe-1.3.0.mp3",
          "settingsSha256": "92dc5975c9059bdc881d7c15153cd1a9f342752eaf7ba638359431c09360ba4d",
          "unchangedFrom": "1.2.1",
          "image": "history-bagpipe-1.3.0.png",
          "sha256": "4b578ebe6d6b79dc817d0c3a9ca1f091118820b3bade3305a3f170b72539ddbf"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-bagpipe-1.4.0.mp3",
          "settingsSha256": "92dc5975c9059bdc881d7c15153cd1a9f342752eaf7ba638359431c09360ba4d",
          "unchangedFrom": "1.3.0",
          "image": "history-bagpipe-1.4.0.png",
          "sha256": "4b578ebe6d6b79dc817d0c3a9ca1f091118820b3bade3305a3f170b72539ddbf"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-bagpipe-3.5.0.mp3",
          "settingsSha256": "92dc5975c9059bdc881d7c15153cd1a9f342752eaf7ba638359431c09360ba4d",
          "unchangedFrom": "1.4.0",
          "image": "history-bagpipe-3.5.0.png",
          "sha256": "4b578ebe6d6b79dc817d0c3a9ca1f091118820b3bade3305a3f170b72539ddbf"
        }
      ],
      "references": [
        {
          "url": "https://cdn.freesound.org/previews/527/527278_5364823-hq.mp3",
          "sourceUrl": "https://freesound.org/people/IowaSpaceWizard/sounds/527278/",
          "source": "Freesound - Bagpipe Chanter - Low G.mp3 by IowaSpaceWizard",
          "license": "CC0",
          "label": "Freesound - Bagpipe Chanter - Low G.mp3 by IowaSpaceWizard; compressed preview",
          "note": "G4",
          "sha256": "2a839c5b24c000bfb91dc3bb8b95fde0f2c0460fae4c38708c70ea6c882ebf23",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 69,
          "features": {
            "rms": 0.29057873852839283,
            "centroidHz": 1760.4,
            "centroidVariationPercent": 2.9,
            "upperEnergyPercent": 33.36,
            "attackMs": 33.6
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://cdn.freesound.org/previews/527/527277_5364823-hq.mp3",
          "sourceUrl": "https://freesound.org/people/IowaSpaceWizard/sounds/527277/",
          "source": "Freesound - Bagpipe Chanter - High G.mp3 by IowaSpaceWizard",
          "license": "CC0",
          "label": "Freesound - Bagpipe Chanter - High G.mp3 by IowaSpaceWizard; compressed preview",
          "note": "G5",
          "sha256": "8e4032f5e9fcf2a75615b36b0e14a23a47db53bfb6d8fdde7163a973dbdecaa3",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 79,
          "features": {
            "rms": 0.20794470302888038,
            "centroidHz": 3041,
            "centroidVariationPercent": 5.3,
            "upperEnergyPercent": 77.53,
            "attackMs": 1667
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://cdn.freesound.org/previews/527/527276_5364823-hq.mp3",
          "sourceUrl": "https://freesound.org/people/IowaSpaceWizard/sounds/527276/",
          "source": "Freesound - Bagpipe Chanter - Low A.mp3 by IowaSpaceWizard",
          "license": "CC0",
          "label": "Freesound - Bagpipe Chanter - Low A.mp3 by IowaSpaceWizard; compressed preview",
          "note": "A4",
          "sha256": "c90e5b7a5f201cc09d0dbc1bd4ec63d03219260399d3ece566fc1550e39b3d14",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 71,
          "features": {
            "rms": 0.2492945573434775,
            "centroidHz": 2900.5,
            "centroidVariationPercent": 9,
            "upperEnergyPercent": 43.33,
            "attackMs": 575.9
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/bagpipe.png",
      "referenceSpectrum": "../timbre-atlas/bagpipe-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "violin",
      "name": "violin",
      "family": "violin",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-violin-1.0.0.mp3",
          "settingsSha256": "aafdf6c29461f6d74929f2ba2643c3575400a9d0af67428d4f44144767c07f73",
          "image": "history-violin-1.0.0.png",
          "sha256": "b7db6da655de26086930de16b4e180b1760e3999baa9a31f11c963129456af6c"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-violin-1.1.0.mp3",
          "settingsSha256": "0ccf85503c3cf94b345bf6f6b9528d63fb02261a7d5769744bd1932bd133eba4",
          "image": "history-violin-1.1.0.png",
          "sha256": "33c0b5f17ff58a865f1e074f3d87b916de8a6aa8a851d8c8b562bdef3bd83ecd"
        },
        {
          "version": "1.2.0",
          "title": "Bow and breath excitation",
          "description": "Archived violin excitation before independent body-band motion.",
          "audio": "history-violin-1.2.0.mp3",
          "settingsSha256": "38b3ab2db7a23ede3d20176b632df784a5da34d817b37f2ec9648188abd97190",
          "image": "history-violin-1.2.0.png",
          "sha256": "ff4ee5600d37915a3c306eb02e053f2f344744de75780650551657eacbc48db8"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-violin-1.2.1.mp3",
          "settingsSha256": "c1d85d634ca12c9b3c017a08882f7817c70b337c3a6df74e8ac2fbd154d3db91",
          "image": "history-violin-1.2.1.png",
          "sha256": "34a2869a8af17320dd135bda50c80435377ea191fcbc767ee3ad36908437b492"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "First measured harmonic-envelope sources; frozen release renderer.",
          "audio": "history-violin-1.3.0.mp3",
          "settingsSha256": "1713adfce6de658b7caf6786fd5c700d5f09fe610c2e4828f4f3a78c9deea26e",
          "image": "history-violin-1.3.0.png",
          "sha256": "0d1bfffabb05f529663b47c80d568bb8a672d3d4693c55f051d1509077200946"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Measured onset contours, sixteen harmonic frames and eight residual-noise bands.",
          "audio": "history-violin-1.4.0.mp3",
          "settingsSha256": "1713adfce6de658b7caf6786fd5c700d5f09fe610c2e4828f4f3a78c9deea26e",
          "image": "history-violin-1.4.0.png",
          "sha256": "ae15ebf04ce0ff282566c6f6445b72d1fc60b5630e0a21cf79417a8cb449c31a"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-violin-3.5.0.mp3",
          "settingsSha256": "1713adfce6de658b7caf6786fd5c700d5f09fe610c2e4828f4f3a78c9deea26e",
          "unchangedFrom": "1.4.0",
          "image": "history-violin-3.5.0.png",
          "sha256": "ae15ebf04ce0ff282566c6f6445b72d1fc60b5630e0a21cf79417a8cb449c31a"
        }
      ],
      "references": [
        {
          "archive": "violin.zip",
          "member": "violin_D4_1_piano_arco-normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "D4",
          "label": "D4 / 1 / piano / arco-normal",
          "sha256": "0e65e75393b2205fc05ade210f95c3c70de481eae59af29fee06059d35b4642a",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 62,
          "features": {
            "rms": 0.0122009781732313,
            "centroidHz": 651.6,
            "centroidVariationPercent": 9.9,
            "upperEnergyPercent": 3.53,
            "attackMs": 423.4
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "violin.zip",
          "member": "violin_D4_1_mezzo-forte_arco-normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "D4",
          "label": "D4 / 1 / mezzo-forte / arco-normal",
          "sha256": "860a376bbedaa061143e4da2a03f9413d04923bf3f22f401c3bdc9db31c13f6f",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 62,
          "features": {
            "rms": 0.029297868151635823,
            "centroidHz": 754.9,
            "centroidVariationPercent": 9.9,
            "upperEnergyPercent": 5.07,
            "attackMs": 204.5
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "violin.zip",
          "member": "violin_D4_1_forte_arco-normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "D4",
          "label": "D4 / 1 / forte / arco-normal",
          "sha256": "286811704aed3b062669f5d297de314d7d5f8489ffc75fd76169aa7c4440db02",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 62,
          "features": {
            "rms": 0.04969257970655468,
            "centroidHz": 761.1,
            "centroidVariationPercent": 8.6,
            "upperEnergyPercent": 8.13,
            "attackMs": 283.7
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/violin.png",
      "referenceSpectrum": "../timbre-atlas/violin-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "viola",
      "name": "viola",
      "family": "viola",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-viola-1.0.0.mp3",
          "settingsSha256": "793a57992614472eb6b09ade746d312d426f3f62a4b58f4a7fcb869ba982df82",
          "image": "history-viola-1.0.0.png",
          "sha256": "7d5d805057d105ddd9f4e08430320040d85f521f9660ff1817883bb7b06fd385"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-viola-1.1.0.mp3",
          "settingsSha256": "60071fd11a92a6dadb69ac873fd2944213639730704a6f4a4e377a61769eae87",
          "image": "history-viola-1.1.0.png",
          "sha256": "caf1300d49b2e12f5a89d1a227f4181995562a5ca511a1e86b37b07e2282120d"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-viola-1.2.1.mp3",
          "settingsSha256": "4694c0d77946bb75e03e8149aee3aaeff97979fb0a4a568c9181bcc814aa94db",
          "image": "history-viola-1.2.1.png",
          "sha256": "4a6c198a93ee436c45c899ae32368e5e4565ab901d88dd7aa6704bc6e09b7144"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "First measured harmonic-envelope sources; frozen release renderer.",
          "audio": "history-viola-1.3.0.mp3",
          "settingsSha256": "3683e938b30e4fe3ee9c8e0922fbeae668b4eed539b720d21f30a2b585f06024",
          "image": "history-viola-1.3.0.png",
          "sha256": "28e8778c29c0dbfab7192da94e99d056bf97040336f364da895e8e478cac3264"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Measured onset contours, sixteen harmonic frames and eight residual-noise bands.",
          "audio": "history-viola-1.4.0.mp3",
          "settingsSha256": "3683e938b30e4fe3ee9c8e0922fbeae668b4eed539b720d21f30a2b585f06024",
          "image": "history-viola-1.4.0.png",
          "sha256": "be2fac730034f815f6ca1896494c421380d888e68016e51b36f2a292c6c4b7f8"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-viola-3.5.0.mp3",
          "settingsSha256": "3683e938b30e4fe3ee9c8e0922fbeae668b4eed539b720d21f30a2b585f06024",
          "unchangedFrom": "1.4.0",
          "image": "history-viola-3.5.0.png",
          "sha256": "be2fac730034f815f6ca1896494c421380d888e68016e51b36f2a292c6c4b7f8"
        }
      ],
      "references": [
        {
          "archive": "viola.zip",
          "member": "viola_C4_1_piano_arco-normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C4",
          "label": "C4 / 1 / piano / arco-normal",
          "sha256": "72255d884f053160ca79d18a0a0cc7d9e942afcb3a8a213dc42f3fb6d8e93e61",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.015498136862205343,
            "centroidHz": 332,
            "centroidVariationPercent": 19,
            "upperEnergyPercent": 1.36,
            "attackMs": 690.6
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "viola.zip",
          "member": "viola_C4_very-long_mezzo-forte_arco-normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C4",
          "label": "C4 / very-long / mezzo-forte / arco-normal",
          "sha256": "9d0f8e69b985cbafdadcc3d6d544fe16b032ef7492e9120d09bcb8e5225b0eaa",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.010129467739994886,
            "centroidHz": 90,
            "centroidVariationPercent": 51.8,
            "upperEnergyPercent": 0.5,
            "attackMs": 1622.1
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "viola.zip",
          "member": "viola_C4_1_fortissimo_arco-normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C4",
          "label": "C4 / 1 / fortissimo / arco-normal",
          "sha256": "874866fe6720f5cac2df99fc7612885be38306adc5b51b306207dbf43036c8a1",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.04063355081401928,
            "centroidHz": 351.9,
            "centroidVariationPercent": 16.7,
            "upperEnergyPercent": 0.98,
            "attackMs": 978.9
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/viola.png",
      "referenceSpectrum": "../timbre-atlas/viola-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "cello",
      "name": "cello",
      "family": "cello",
      "baseMidi": 48,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-cello-1.0.0.mp3",
          "settingsSha256": "64fe6eaf0c376300a76df5a3488e22e6acc73e90339f1dd28710f33cd7616685",
          "image": "history-cello-1.0.0.png",
          "sha256": "eebcdeb8a63520b00c200a16baec7e9c837c046a308deae31d2c1d23e629128f"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-cello-1.1.0.mp3",
          "settingsSha256": "cab30897ac02260ae7d49f9d9e1b522e0b9a9378d4d7ec910b755955adde13a7",
          "image": "history-cello-1.1.0.png",
          "sha256": "4f9d9eb69e1fa4f46acbdb90ead42ab89fbc48d1da5d2dbb3746d390957b917c"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-cello-1.2.1.mp3",
          "settingsSha256": "318a70abbd1cfc1c38035d1b84e8da5ff8dcfaa4142cda258c70dcb749da0956",
          "image": "history-cello-1.2.1.png",
          "sha256": "48e8c122b0534ee01b7a44e92fed5d5b8423f5a71807e81081f222a55d72e26c"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "First measured harmonic-envelope sources; frozen release renderer.",
          "audio": "history-cello-1.3.0.mp3",
          "settingsSha256": "2f7f30fa91c8588fa398db538f1632d7eb5622557d5bd50a8b487b7f1b4e530e",
          "image": "history-cello-1.3.0.png",
          "sha256": "82db2a8bbb99ceed63e7e39383644e7cb7753e63ad83fb4db347f08ad51019d9"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Measured onset contours, sixteen harmonic frames and eight residual-noise bands.",
          "audio": "history-cello-1.4.0.mp3",
          "settingsSha256": "2f7f30fa91c8588fa398db538f1632d7eb5622557d5bd50a8b487b7f1b4e530e",
          "image": "history-cello-1.4.0.png",
          "sha256": "c0a8fb069d7dc1488b434de6bfcb2245423b8f8d613558fb90bc648c77a0149d"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-cello-3.5.0.mp3",
          "settingsSha256": "2f7f30fa91c8588fa398db538f1632d7eb5622557d5bd50a8b487b7f1b4e530e",
          "unchangedFrom": "1.4.0",
          "image": "history-cello-3.5.0.png",
          "sha256": "c0a8fb069d7dc1488b434de6bfcb2245423b8f8d613558fb90bc648c77a0149d"
        }
      ],
      "references": [
        {
          "archive": "cello.zip",
          "member": "cello_C3_15_piano_arco-normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C3",
          "label": "C3 / 15 / piano / arco-normal",
          "sha256": "a8260b7bd0c6693117361eebf0c482fc303bb04fe2e2955b68d5a80ec39ff8dd",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 48,
          "features": {
            "rms": 0.021271540950599067,
            "centroidHz": 318.5,
            "centroidVariationPercent": 41.1,
            "upperEnergyPercent": 0.13,
            "attackMs": 545.3
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "cello.zip",
          "member": "cello_C3_1_forte_arco-normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C3",
          "label": "C3 / 1 / forte / arco-normal",
          "sha256": "6cdbee155d81d38a8d877cc23de3e677268740ffd79833d01df78db1ea713897",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 48,
          "features": {
            "rms": 0.0379211065763054,
            "centroidHz": 322.3,
            "centroidVariationPercent": 13.8,
            "upperEnergyPercent": 0.47,
            "attackMs": 525.4
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "cello.zip",
          "member": "cello_C3_1_fortissimo_arco-normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C3",
          "label": "C3 / 1 / fortissimo / arco-normal",
          "sha256": "99aa5444c30e5b7ab3c0770e7881b81783138b89737540a94d0dbe091796b7a7",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 48,
          "features": {
            "rms": 0.06024737195462847,
            "centroidHz": 303.2,
            "centroidVariationPercent": 8.1,
            "upperEnergyPercent": 0.3,
            "attackMs": 376.5
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/cello.png",
      "referenceSpectrum": "../timbre-atlas/cello-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "contrabass",
      "name": "contrabass",
      "family": "contrabass",
      "baseMidi": 48,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-contrabass-1.0.0.mp3",
          "settingsSha256": "e40e59b1615cbe4257a00e27005e8123e9fb3d77e2364c3726397441a17cfa57",
          "image": "history-contrabass-1.0.0.png",
          "sha256": "5c0a36b28592b2d9b3e5d3d0e20faad15dcd263b0d40590dc93a0e8d5060808b"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-contrabass-1.1.0.mp3",
          "settingsSha256": "3426c21b28c7356f8bd67fde07c76635c73b1ef36ec431ade594c9fd64e7d3d4",
          "image": "history-contrabass-1.1.0.png",
          "sha256": "934784af138788611c981e4aabf4dc4ecabd1789435a08622490f3c2023d702d"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-contrabass-1.2.1.mp3",
          "settingsSha256": "7a40e052417e572136a15d340d8ec15e4bf2ba8dd3eba03eb07ce7dde7a6d3bc",
          "image": "history-contrabass-1.2.1.png",
          "sha256": "f9fd3fdbd0dff5d0eb664bb87c39e96f527d3e781a7daa602f08553a6c285a20"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-contrabass-1.3.0.mp3",
          "settingsSha256": "7a40e052417e572136a15d340d8ec15e4bf2ba8dd3eba03eb07ce7dde7a6d3bc",
          "unchangedFrom": "1.2.1",
          "image": "history-contrabass-1.3.0.png",
          "sha256": "f9fd3fdbd0dff5d0eb664bb87c39e96f527d3e781a7daa602f08553a6c285a20"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-contrabass-1.4.0.mp3",
          "settingsSha256": "7a40e052417e572136a15d340d8ec15e4bf2ba8dd3eba03eb07ce7dde7a6d3bc",
          "unchangedFrom": "1.3.0",
          "image": "history-contrabass-1.4.0.png",
          "sha256": "f9fd3fdbd0dff5d0eb664bb87c39e96f527d3e781a7daa602f08553a6c285a20"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-contrabass-3.5.0.mp3",
          "settingsSha256": "7a40e052417e572136a15d340d8ec15e4bf2ba8dd3eba03eb07ce7dde7a6d3bc",
          "unchangedFrom": "1.4.0",
          "image": "history-contrabass-3.5.0.png",
          "sha256": "f9fd3fdbd0dff5d0eb664bb87c39e96f527d3e781a7daa602f08553a6c285a20"
        }
      ],
      "references": [
        {
          "archive": "double bass.zip",
          "member": "double-bass_C3_1_piano_arco-normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C3",
          "label": "C3 / 1 / piano / arco-normal",
          "sha256": "2675ba139871b7e9ff84ed9da495ef24f15638e9765659cd2acd3efec32f8ab4",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 48,
          "features": {
            "rms": 0.03443044347688965,
            "centroidHz": 233,
            "centroidVariationPercent": 36.1,
            "upperEnergyPercent": 0.11,
            "attackMs": 289.1
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "double bass.zip",
          "member": "double-bass_C3_1_mezzo-forte_arco-normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C3",
          "label": "C3 / 1 / mezzo-forte / arco-normal",
          "sha256": "c99a803ef54353bcddfeea648e7a64a664b8df729f8e0753ee412eba69edb52c",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 48,
          "features": {
            "rms": 0.07753617046020476,
            "centroidHz": 189.9,
            "centroidVariationPercent": 12.4,
            "upperEnergyPercent": 0.02,
            "attackMs": 405.8
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "double bass.zip",
          "member": "double-bass_C3_1_forte_arco-normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C3",
          "label": "C3 / 1 / forte / arco-normal",
          "sha256": "51afd40291f686383f51ae22dbc46c8e1b65754086a3b87d2f26434d3e33cd95",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 48,
          "features": {
            "rms": 0.09564583106717522,
            "centroidHz": 231.7,
            "centroidVariationPercent": 17.3,
            "upperEnergyPercent": 0.23,
            "attackMs": 342.7
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/contrabass.png",
      "referenceSpectrum": "../timbre-atlas/contrabass-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "fiddle",
      "name": "fiddle",
      "family": "violin",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-fiddle-1.0.0.mp3",
          "settingsSha256": "38853f3a5c9677b627614b013a2753b337eb08201ccada1f5d92e8b1a2462ee7",
          "image": "history-fiddle-1.0.0.png",
          "sha256": "b78824f4eaf3551d54dd9e533bf9e0fafd4ebc374416b72c4fcc7707c82045bc"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-fiddle-1.1.0.mp3",
          "settingsSha256": "0fc57f7ae7d78b782f71bc378909d1a1768288ce932165086c705a468a69d401",
          "image": "history-fiddle-1.1.0.png",
          "sha256": "33c0b5f17ff58a865f1e074f3d87b916de8a6aa8a851d8c8b562bdef3bd83ecd"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-fiddle-1.2.1.mp3",
          "settingsSha256": "cc1af58daca3cb18d0dc3ee18057101cfcdc4593fc7cee70e5db30bfe54fab40",
          "image": "history-fiddle-1.2.1.png",
          "sha256": "34a2869a8af17320dd135bda50c80435377ea191fcbc767ee3ad36908437b492"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-fiddle-1.3.0.mp3",
          "settingsSha256": "60a2f39449628663560b1c1678a97b560bab31be004092fdc06fe871b936cfc8",
          "image": "history-fiddle-1.3.0.png",
          "sha256": "8ed94fe7904feef9d225566ef99e1d19aada492c6fc4672cbd145f5ed48d3ce0"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-fiddle-1.4.0.mp3",
          "settingsSha256": "60a2f39449628663560b1c1678a97b560bab31be004092fdc06fe871b936cfc8",
          "unchangedFrom": "1.3.0",
          "image": "history-fiddle-1.4.0.png",
          "sha256": "8ed94fe7904feef9d225566ef99e1d19aada492c6fc4672cbd145f5ed48d3ce0"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-fiddle-3.5.0.mp3",
          "settingsSha256": "60a2f39449628663560b1c1678a97b560bab31be004092fdc06fe871b936cfc8",
          "unchangedFrom": "1.4.0",
          "image": "history-fiddle-3.5.0.png",
          "sha256": "8ed94fe7904feef9d225566ef99e1d19aada492c6fc4672cbd145f5ed48d3ce0"
        }
      ],
      "references": [
        {
          "archive": "violin.zip",
          "member": "violin_D4_1_piano_arco-normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "D4",
          "label": "D4 / 1 / piano / arco-normal",
          "sha256": "0e65e75393b2205fc05ade210f95c3c70de481eae59af29fee06059d35b4642a",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 62,
          "features": {
            "rms": 0.0122009781732313,
            "centroidHz": 651.6,
            "centroidVariationPercent": 9.9,
            "upperEnergyPercent": 3.53,
            "attackMs": 423.4
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "violin.zip",
          "member": "violin_D4_1_mezzo-forte_arco-normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "D4",
          "label": "D4 / 1 / mezzo-forte / arco-normal",
          "sha256": "860a376bbedaa061143e4da2a03f9413d04923bf3f22f401c3bdc9db31c13f6f",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 62,
          "features": {
            "rms": 0.029297868151635823,
            "centroidHz": 754.9,
            "centroidVariationPercent": 9.9,
            "upperEnergyPercent": 5.07,
            "attackMs": 204.5
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "violin.zip",
          "member": "violin_D4_1_forte_arco-normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "D4",
          "label": "D4 / 1 / forte / arco-normal",
          "sha256": "286811704aed3b062669f5d297de314d7d5f8489ffc75fd76169aa7c4440db02",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 62,
          "features": {
            "rms": 0.04969257970655468,
            "centroidHz": 761.1,
            "centroidVariationPercent": 8.6,
            "upperEnergyPercent": 8.13,
            "attackMs": 283.7
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/fiddle.png",
      "referenceSpectrum": "../timbre-atlas/fiddle-spectrum.png",
      "coverage": "related",
      "contextual": false
    },
    {
      "id": "tremolo-strings",
      "name": "tremolo strings",
      "family": "strings",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-tremolo-strings-1.0.0.mp3",
          "settingsSha256": "a67087c22337ad3fbb2ed69507939a582462de4c5c21fd3d0830804fae54ee8b",
          "image": "history-tremolo-strings-1.0.0.png",
          "sha256": "3fcee79315afe4bfda2e9c57eaa22f899ff8e7b21813d1710fab1fc2c5dcdcd9"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-tremolo-strings-1.1.0.mp3",
          "settingsSha256": "a0fa77de38bb025860d93a571c1c5aee9c978f39d0c3828690f8bee211acbe5a",
          "image": "history-tremolo-strings-1.1.0.png",
          "sha256": "66de711c0c53097b569bccc3152a7ccc85d7337cd4203bcab09ce66ab88a7f26"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-tremolo-strings-1.2.1.mp3",
          "settingsSha256": "f19564bc73d6ee55c9e11e4679cd867e8620f9c169efc0a32c94ea05af96f6f7",
          "image": "history-tremolo-strings-1.2.1.png",
          "sha256": "e1710bc601a3e30c9e5290bcc6c52df0bddf01d6fe6e04b0044de39902917e2e"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-tremolo-strings-1.3.0.mp3",
          "settingsSha256": "f19564bc73d6ee55c9e11e4679cd867e8620f9c169efc0a32c94ea05af96f6f7",
          "unchangedFrom": "1.2.1",
          "image": "history-tremolo-strings-1.3.0.png",
          "sha256": "e1710bc601a3e30c9e5290bcc6c52df0bddf01d6fe6e04b0044de39902917e2e"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-tremolo-strings-1.4.0.mp3",
          "settingsSha256": "f19564bc73d6ee55c9e11e4679cd867e8620f9c169efc0a32c94ea05af96f6f7",
          "unchangedFrom": "1.3.0",
          "image": "history-tremolo-strings-1.4.0.png",
          "sha256": "e1710bc601a3e30c9e5290bcc6c52df0bddf01d6fe6e04b0044de39902917e2e"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-tremolo-strings-3.5.0.mp3",
          "settingsSha256": "f19564bc73d6ee55c9e11e4679cd867e8620f9c169efc0a32c94ea05af96f6f7",
          "unchangedFrom": "1.4.0",
          "image": "history-tremolo-strings-3.5.0.png",
          "sha256": "e1710bc601a3e30c9e5290bcc6c52df0bddf01d6fe6e04b0044de39902917e2e"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/sgossner/VSCO-2-CE/master/Strings/Violin%20Section/susVib/VlnEns_susVib_C4_v1.wav",
          "source": "VSCO 2 Community Edition",
          "sourceUrl": "https://github.com/sgossner/VSCO-2-CE/blob/master/Strings/Violin%20Section/susVib/VlnEns_susVib_C4_v1.wav",
          "license": "CC0",
          "label": "VlnEns_susVib_C4_v1",
          "note": "C4",
          "sha256": "c07edd5b2119fa1da2207aba996961b50dd616f69bbcf2300ab271bc6c16239f",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.025678107959448665,
            "centroidHz": 656.5,
            "centroidVariationPercent": 21.6,
            "upperEnergyPercent": 4.19,
            "attackMs": 2954.8
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VSCO-2-CE/master/Strings/Violin%20Section/susVib/VlnEns_susVib_C4_v2.wav",
          "source": "VSCO 2 Community Edition",
          "sourceUrl": "https://github.com/sgossner/VSCO-2-CE/blob/master/Strings/Violin%20Section/susVib/VlnEns_susVib_C4_v2.wav",
          "license": "CC0",
          "label": "VlnEns_susVib_C4_v2",
          "note": "C4",
          "sha256": "5857387b40c412f756ef281c1171247664432a4e5078c98142d595d15cd92ef9",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.06948067651244699,
            "centroidHz": 930.7,
            "centroidVariationPercent": 34.9,
            "upperEnergyPercent": 14.32,
            "attackMs": 1550
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VSCO-2-CE/master/Strings/Violin%20Section/susVib/VlnEns_susVib_A2_v1.wav",
          "source": "VSCO 2 Community Edition",
          "sourceUrl": "https://github.com/sgossner/VSCO-2-CE/blob/master/Strings/Violin%20Section/susVib/VlnEns_susVib_A2_v1.wav",
          "license": "CC0",
          "label": "VlnEns_susVib_A2_v1",
          "note": "A2",
          "sha256": "5b3ff9f991642a6dc2fdad56a7d94f581077d2c4082cc1ed89156737716ff22c",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 57,
          "features": {
            "rms": 0.013598345604459711,
            "centroidHz": 678.2,
            "centroidVariationPercent": 14.9,
            "upperEnergyPercent": 3.15,
            "attackMs": 2541.7
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/tremolo-strings.png",
      "referenceSpectrum": "../timbre-atlas/tremolo-strings-spectrum.png",
      "coverage": "related",
      "contextual": false
    },
    {
      "id": "strings",
      "name": "strings",
      "family": "strings",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-strings-1.0.0.mp3",
          "settingsSha256": "c0ed0cf0982b2a11b2fcaaca6ba9445b0c872495573291f596288c9616180fa6",
          "image": "history-strings-1.0.0.png",
          "sha256": "24af86d730a8869de50bb8d0b5f077b72c1ba20008e8d981a147a80ecb2954e7"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-strings-1.1.0.mp3",
          "settingsSha256": "70b81b35545b83e735024cbb8f4a42573c030dacc048749c518b378da66afd0e",
          "image": "history-strings-1.1.0.png",
          "sha256": "9352cd470eefcd08b94a27c56b33ac4bfa7686abe030192749feeeaa162c7901"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-strings-1.2.1.mp3",
          "settingsSha256": "54c3fa22713ef27eed138faf9c526cd8a8766d8a664e88fb9a3dd8c1785d0ee0",
          "image": "history-strings-1.2.1.png",
          "sha256": "cec7d136df0ae6d0b8ebb5867d4ed0418085d9bf07fc87fe9889a3bf248af475"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-strings-1.3.0.mp3",
          "settingsSha256": "54c3fa22713ef27eed138faf9c526cd8a8766d8a664e88fb9a3dd8c1785d0ee0",
          "unchangedFrom": "1.2.1",
          "image": "history-strings-1.3.0.png",
          "sha256": "cec7d136df0ae6d0b8ebb5867d4ed0418085d9bf07fc87fe9889a3bf248af475"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-strings-1.4.0.mp3",
          "settingsSha256": "54c3fa22713ef27eed138faf9c526cd8a8766d8a664e88fb9a3dd8c1785d0ee0",
          "unchangedFrom": "1.3.0",
          "image": "history-strings-1.4.0.png",
          "sha256": "cec7d136df0ae6d0b8ebb5867d4ed0418085d9bf07fc87fe9889a3bf248af475"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-strings-3.5.0.mp3",
          "settingsSha256": "54c3fa22713ef27eed138faf9c526cd8a8766d8a664e88fb9a3dd8c1785d0ee0",
          "unchangedFrom": "1.4.0",
          "image": "history-strings-3.5.0.png",
          "sha256": "cec7d136df0ae6d0b8ebb5867d4ed0418085d9bf07fc87fe9889a3bf248af475"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/sgossner/VSCO-2-CE/master/Strings/Violin%20Section/susVib/VlnEns_susVib_C4_v1.wav",
          "source": "VSCO 2 Community Edition",
          "sourceUrl": "https://github.com/sgossner/VSCO-2-CE/blob/master/Strings/Violin%20Section/susVib/VlnEns_susVib_C4_v1.wav",
          "license": "CC0",
          "label": "VlnEns_susVib_C4_v1",
          "note": "C4",
          "sha256": "c07edd5b2119fa1da2207aba996961b50dd616f69bbcf2300ab271bc6c16239f",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.025678107959448665,
            "centroidHz": 656.5,
            "centroidVariationPercent": 21.6,
            "upperEnergyPercent": 4.19,
            "attackMs": 2954.8
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VSCO-2-CE/master/Strings/Violin%20Section/susVib/VlnEns_susVib_C4_v2.wav",
          "source": "VSCO 2 Community Edition",
          "sourceUrl": "https://github.com/sgossner/VSCO-2-CE/blob/master/Strings/Violin%20Section/susVib/VlnEns_susVib_C4_v2.wav",
          "license": "CC0",
          "label": "VlnEns_susVib_C4_v2",
          "note": "C4",
          "sha256": "5857387b40c412f756ef281c1171247664432a4e5078c98142d595d15cd92ef9",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.06948067651244699,
            "centroidHz": 930.7,
            "centroidVariationPercent": 34.9,
            "upperEnergyPercent": 14.32,
            "attackMs": 1550
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VSCO-2-CE/master/Strings/Violin%20Section/susVib/VlnEns_susVib_A2_v1.wav",
          "source": "VSCO 2 Community Edition",
          "sourceUrl": "https://github.com/sgossner/VSCO-2-CE/blob/master/Strings/Violin%20Section/susVib/VlnEns_susVib_A2_v1.wav",
          "license": "CC0",
          "label": "VlnEns_susVib_A2_v1",
          "note": "A2",
          "sha256": "5b3ff9f991642a6dc2fdad56a7d94f581077d2c4082cc1ed89156737716ff22c",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 57,
          "features": {
            "rms": 0.013598345604459711,
            "centroidHz": 678.2,
            "centroidVariationPercent": 14.9,
            "upperEnergyPercent": 3.15,
            "attackMs": 2541.7
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/strings.png",
      "referenceSpectrum": "../timbre-atlas/strings-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "slow-strings",
      "name": "slow strings",
      "family": "strings",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-slow-strings-1.0.0.mp3",
          "settingsSha256": "36c45dbd057bba07ca2191b3a94565ba87dbed56f20d941eafa56d2e4f8333d4",
          "image": "history-slow-strings-1.0.0.png",
          "sha256": "990458a8594677bad595fb47a9aad185a4160c694e2d95578966063111f7b8a4"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-slow-strings-1.1.0.mp3",
          "settingsSha256": "523f322dd40129e8635a89f0404ad73c9631e4123e52be51c0fbac5b5c51216c",
          "image": "history-slow-strings-1.1.0.png",
          "sha256": "6c5e0345d9b286a957ec7bc70131890d7fbd038310fe84c659c33c076b54b918"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-slow-strings-1.2.1.mp3",
          "settingsSha256": "85cfad1b994c47dcc30d14b410fce3faef1c3ca22b2eb2c55639737ba5e33e4a",
          "image": "history-slow-strings-1.2.1.png",
          "sha256": "fdb412eeb5a04d092bb4585eaa6afee01b045629bffc74a16232b8d233cce1ba"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-slow-strings-1.3.0.mp3",
          "settingsSha256": "85cfad1b994c47dcc30d14b410fce3faef1c3ca22b2eb2c55639737ba5e33e4a",
          "unchangedFrom": "1.2.1",
          "image": "history-slow-strings-1.3.0.png",
          "sha256": "fdb412eeb5a04d092bb4585eaa6afee01b045629bffc74a16232b8d233cce1ba"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-slow-strings-1.4.0.mp3",
          "settingsSha256": "85cfad1b994c47dcc30d14b410fce3faef1c3ca22b2eb2c55639737ba5e33e4a",
          "unchangedFrom": "1.3.0",
          "image": "history-slow-strings-1.4.0.png",
          "sha256": "fdb412eeb5a04d092bb4585eaa6afee01b045629bffc74a16232b8d233cce1ba"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-slow-strings-3.5.0.mp3",
          "settingsSha256": "85cfad1b994c47dcc30d14b410fce3faef1c3ca22b2eb2c55639737ba5e33e4a",
          "unchangedFrom": "1.4.0",
          "image": "history-slow-strings-3.5.0.png",
          "sha256": "fdb412eeb5a04d092bb4585eaa6afee01b045629bffc74a16232b8d233cce1ba"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/sgossner/VSCO-2-CE/master/Strings/Violin%20Section/susVib/VlnEns_susVib_C4_v1.wav",
          "source": "VSCO 2 Community Edition",
          "sourceUrl": "https://github.com/sgossner/VSCO-2-CE/blob/master/Strings/Violin%20Section/susVib/VlnEns_susVib_C4_v1.wav",
          "license": "CC0",
          "label": "VlnEns_susVib_C4_v1",
          "note": "C4",
          "sha256": "c07edd5b2119fa1da2207aba996961b50dd616f69bbcf2300ab271bc6c16239f",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.025678107959448665,
            "centroidHz": 656.5,
            "centroidVariationPercent": 21.6,
            "upperEnergyPercent": 4.19,
            "attackMs": 2954.8
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VSCO-2-CE/master/Strings/Violin%20Section/susVib/VlnEns_susVib_C4_v2.wav",
          "source": "VSCO 2 Community Edition",
          "sourceUrl": "https://github.com/sgossner/VSCO-2-CE/blob/master/Strings/Violin%20Section/susVib/VlnEns_susVib_C4_v2.wav",
          "license": "CC0",
          "label": "VlnEns_susVib_C4_v2",
          "note": "C4",
          "sha256": "5857387b40c412f756ef281c1171247664432a4e5078c98142d595d15cd92ef9",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.06948067651244699,
            "centroidHz": 930.7,
            "centroidVariationPercent": 34.9,
            "upperEnergyPercent": 14.32,
            "attackMs": 1550
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VSCO-2-CE/master/Strings/Violin%20Section/susVib/VlnEns_susVib_A2_v1.wav",
          "source": "VSCO 2 Community Edition",
          "sourceUrl": "https://github.com/sgossner/VSCO-2-CE/blob/master/Strings/Violin%20Section/susVib/VlnEns_susVib_A2_v1.wav",
          "license": "CC0",
          "label": "VlnEns_susVib_A2_v1",
          "note": "A2",
          "sha256": "5b3ff9f991642a6dc2fdad56a7d94f581077d2c4082cc1ed89156737716ff22c",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 57,
          "features": {
            "rms": 0.013598345604459711,
            "centroidHz": 678.2,
            "centroidVariationPercent": 14.9,
            "upperEnergyPercent": 3.15,
            "attackMs": 2541.7
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/slow-strings.png",
      "referenceSpectrum": "../timbre-atlas/slow-strings-spectrum.png",
      "coverage": "related",
      "contextual": false
    },
    {
      "id": "choir-soprano",
      "name": "choir soprano",
      "family": "solo-soprano",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-choir-soprano-1.0.0.mp3",
          "settingsSha256": "1ba6e7db364db6a39431494aa3bb5dfc075f0d60c11f7583f0c043b71eb6d4bf",
          "image": "history-choir-soprano-1.0.0.png",
          "sha256": "c80c18e210bd025fdf3a8b63ac1b15fc6cf973091501c62d27600839fe92577d"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-choir-soprano-1.1.0.mp3",
          "settingsSha256": "8d41d6ea75f5409ac3fff69cdadbd3ddb3c06211e5df648e28ffae81a9f7c35c",
          "image": "history-choir-soprano-1.1.0.png",
          "sha256": "989f878d3ff4e84a0a5cc83d3c0c8aedab0670128c4379d3b1103717dbed6671"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-choir-soprano-1.2.1.mp3",
          "settingsSha256": "8d41d6ea75f5409ac3fff69cdadbd3ddb3c06211e5df648e28ffae81a9f7c35c",
          "unchangedFrom": "1.1.0",
          "image": "history-choir-soprano-1.2.1.png",
          "sha256": "989f878d3ff4e84a0a5cc83d3c0c8aedab0670128c4379d3b1103717dbed6671"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-choir-soprano-1.3.0.mp3",
          "settingsSha256": "8d41d6ea75f5409ac3fff69cdadbd3ddb3c06211e5df648e28ffae81a9f7c35c",
          "unchangedFrom": "1.2.1",
          "image": "history-choir-soprano-1.3.0.png",
          "sha256": "989f878d3ff4e84a0a5cc83d3c0c8aedab0670128c4379d3b1103717dbed6671"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-choir-soprano-1.4.0.mp3",
          "settingsSha256": "8d41d6ea75f5409ac3fff69cdadbd3ddb3c06211e5df648e28ffae81a9f7c35c",
          "unchangedFrom": "1.3.0",
          "image": "history-choir-soprano-1.4.0.png",
          "sha256": "989f878d3ff4e84a0a5cc83d3c0c8aedab0670128c4379d3b1103717dbed6671"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-choir-soprano-3.5.0.mp3",
          "settingsSha256": "8d41d6ea75f5409ac3fff69cdadbd3ddb3c06211e5df648e28ffae81a9f7c35c",
          "unchangedFrom": "1.4.0",
          "image": "history-choir-soprano-3.5.0.png",
          "sha256": "989f878d3ff4e84a0a5cc83d3c0c8aedab0670128c4379d3b1103717dbed6671"
        }
      ],
      "references": [
        {
          "url": "https://zenodo.org/api/records/1442513/files/VocalSet11.zip/content",
          "zipRange": {
            "name": "FULL/female1/long_tones/forte/f1_long_forte_a.wav",
            "size": 998072,
            "offset": 261163392,
            "compressed": 723108
          },
          "sourceUrl": "https://zenodo.org/records/1442513",
          "source": "VocalSet: Julia Wilkins, Prem Seetharaman, Alison Wahl, Bryan Pardo",
          "license": "CC BY 4.0",
          "label": "f1 sustained forte vowel /a/",
          "note": null,
          "estimatePitch": true,
          "sha256": "79c77dbc24f8aba97a878d6896728e559dfc109a2ed23c557c29ae256cdc859c",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.01707786846865584,
            "centroidHz": 809.7,
            "centroidVariationPercent": 9.2,
            "upperEnergyPercent": 2.95,
            "attackMs": 452.5
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://zenodo.org/api/records/1442513/files/VocalSet11.zip/content",
          "zipRange": {
            "name": "FULL/female1/long_tones/forte/f1_long_forte_o.wav",
            "size": 987342,
            "offset": 259773794,
            "compressed": 700587
          },
          "sourceUrl": "https://zenodo.org/records/1442513",
          "source": "VocalSet: Julia Wilkins, Prem Seetharaman, Alison Wahl, Bryan Pardo",
          "license": "CC BY 4.0",
          "label": "f1 sustained forte vowel /o/",
          "note": null,
          "estimatePitch": true,
          "sha256": "d0d115cb447101793878a22be9b9db395b3ccdaa407ea05db57c260c973695d9",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.007450559413236461,
            "centroidHz": 540.3,
            "centroidVariationPercent": 9.1,
            "upperEnergyPercent": 1.99,
            "attackMs": 521.8
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://zenodo.org/api/records/1442513/files/VocalSet11.zip/content",
          "zipRange": {
            "name": "FULL/female1/long_tones/forte/f1_long_forte_u.wav",
            "size": 976610,
            "offset": 260474492,
            "compressed": 688789
          },
          "sourceUrl": "https://zenodo.org/records/1442513",
          "source": "VocalSet: Julia Wilkins, Prem Seetharaman, Alison Wahl, Bryan Pardo",
          "license": "CC BY 4.0",
          "label": "f1 sustained forte vowel /u/",
          "note": null,
          "estimatePitch": true,
          "sha256": "c68080268c96f825afdfbc0d7f7125420a8b6e4008a0676843989fbc30bb62af",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.007151633960858054,
            "centroidHz": 289.2,
            "centroidVariationPercent": 5.9,
            "upperEnergyPercent": 0.19,
            "attackMs": 422.4
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/choir-soprano.png",
      "referenceSpectrum": "../timbre-atlas/choir-soprano-spectrum.png",
      "coverage": "related",
      "contextual": false
    },
    {
      "id": "choir-tenor",
      "name": "choir tenor",
      "family": "solo-tenor",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-choir-tenor-1.0.0.mp3",
          "settingsSha256": "e250d1192d09341e9a9599f48a350aa5ed9a66ef99afd12eeb4045d47c2584f3",
          "image": "history-choir-tenor-1.0.0.png",
          "sha256": "c775a7ad15644447cc7e12c9fa3ddf6d964937f5ffc8a6364705cf26aa8e9752"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-choir-tenor-1.1.0.mp3",
          "settingsSha256": "87a35a37c92cf08de38a1fa7c8232ca0cb9c5cd787e723406e1898f4aef28254",
          "image": "history-choir-tenor-1.1.0.png",
          "sha256": "78f999ee88f0cc9095092ea2023d3bf177c26bf0d7be0d28ddc545707567c8b4"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-choir-tenor-1.2.1.mp3",
          "settingsSha256": "87a35a37c92cf08de38a1fa7c8232ca0cb9c5cd787e723406e1898f4aef28254",
          "unchangedFrom": "1.1.0",
          "image": "history-choir-tenor-1.2.1.png",
          "sha256": "78f999ee88f0cc9095092ea2023d3bf177c26bf0d7be0d28ddc545707567c8b4"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-choir-tenor-1.3.0.mp3",
          "settingsSha256": "87a35a37c92cf08de38a1fa7c8232ca0cb9c5cd787e723406e1898f4aef28254",
          "unchangedFrom": "1.2.1",
          "image": "history-choir-tenor-1.3.0.png",
          "sha256": "78f999ee88f0cc9095092ea2023d3bf177c26bf0d7be0d28ddc545707567c8b4"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-choir-tenor-1.4.0.mp3",
          "settingsSha256": "87a35a37c92cf08de38a1fa7c8232ca0cb9c5cd787e723406e1898f4aef28254",
          "unchangedFrom": "1.3.0",
          "image": "history-choir-tenor-1.4.0.png",
          "sha256": "78f999ee88f0cc9095092ea2023d3bf177c26bf0d7be0d28ddc545707567c8b4"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-choir-tenor-3.5.0.mp3",
          "settingsSha256": "87a35a37c92cf08de38a1fa7c8232ca0cb9c5cd787e723406e1898f4aef28254",
          "unchangedFrom": "1.4.0",
          "image": "history-choir-tenor-3.5.0.png",
          "sha256": "78f999ee88f0cc9095092ea2023d3bf177c26bf0d7be0d28ddc545707567c8b4"
        }
      ],
      "references": [
        {
          "url": "https://zenodo.org/api/records/1442513/files/VocalSet11.zip/content",
          "zipRange": {
            "name": "FULL/male2/long_tones/forte/m2_long_forte_a.wav",
            "size": 899400,
            "offset": 801495598,
            "compressed": 664004
          },
          "sourceUrl": "https://zenodo.org/records/1442513",
          "source": "VocalSet: Julia Wilkins, Prem Seetharaman, Alison Wahl, Bryan Pardo",
          "license": "CC BY 4.0",
          "label": "m2 sustained forte vowel /a/",
          "note": null,
          "estimatePitch": true,
          "sha256": "1dd686a17a656f5c695b164494721c17ff7a500aefde64aafcc5503fd0c07e3a",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 48,
          "features": {
            "rms": 0.01364659475277047,
            "centroidHz": 828.4,
            "centroidVariationPercent": 10.7,
            "upperEnergyPercent": 5.12,
            "attackMs": 1389.3
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://zenodo.org/api/records/1442513/files/VocalSet11.zip/content",
          "zipRange": {
            "name": "FULL/male2/long_tones/forte/m2_long_forte_o.wav",
            "size": 953758,
            "offset": 798816319,
            "compressed": 718963
          },
          "sourceUrl": "https://zenodo.org/records/1442513",
          "source": "VocalSet: Julia Wilkins, Prem Seetharaman, Alison Wahl, Bryan Pardo",
          "license": "CC BY 4.0",
          "label": "m2 sustained forte vowel /o/",
          "note": null,
          "estimatePitch": true,
          "sha256": "67a5f620ab716a1b46f12a9854a5969cb6994dd59e430c98c10023c7a7b18b9f",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 48,
          "features": {
            "rms": 0.013730847964181003,
            "centroidHz": 521.2,
            "centroidVariationPercent": 7.5,
            "upperEnergyPercent": 3.28,
            "attackMs": 739.8
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://zenodo.org/api/records/1442513/files/VocalSet11.zip/content",
          "zipRange": {
            "name": "FULL/male2/long_tones/forte/m2_long_forte_u.wav",
            "size": 968584,
            "offset": 800780189,
            "compressed": 715300
          },
          "sourceUrl": "https://zenodo.org/records/1442513",
          "source": "VocalSet: Julia Wilkins, Prem Seetharaman, Alison Wahl, Bryan Pardo",
          "license": "CC BY 4.0",
          "label": "m2 sustained forte vowel /u/",
          "note": null,
          "estimatePitch": true,
          "sha256": "55906373ea233e94287bfd1742b5865722c0de882da45c5a7f799fdcc10711c6",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 48,
          "features": {
            "rms": 0.012279145434499967,
            "centroidHz": 360.1,
            "centroidVariationPercent": 18.7,
            "upperEnergyPercent": 0.45,
            "attackMs": 801.2
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/choir-tenor.png",
      "referenceSpectrum": "../timbre-atlas/choir-tenor-spectrum.png",
      "coverage": "related",
      "contextual": false
    },
    {
      "id": "choir-bass",
      "name": "choir bass",
      "family": "solo-bass",
      "baseMidi": 48,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-choir-bass-1.0.0.mp3",
          "settingsSha256": "1b95fdaeb51386afe8608ea04680f9e6fefdd78e17bdab05fcc5758a02e7461a",
          "image": "history-choir-bass-1.0.0.png",
          "sha256": "7c7980094f38b5b2f47a2e850255f43a4b6958e05d7d1185b1e42517a5a7db9d"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-choir-bass-1.1.0.mp3",
          "settingsSha256": "102a0a8990824d5720b0443e64ac6211355c71bd4a3b27a7236e3ff31d90fd32",
          "image": "history-choir-bass-1.1.0.png",
          "sha256": "9c030d63eabfdfc8d585d2ae62fa41bd3014afca1c555b48927e03542ab01094"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-choir-bass-1.2.1.mp3",
          "settingsSha256": "102a0a8990824d5720b0443e64ac6211355c71bd4a3b27a7236e3ff31d90fd32",
          "unchangedFrom": "1.1.0",
          "image": "history-choir-bass-1.2.1.png",
          "sha256": "9c030d63eabfdfc8d585d2ae62fa41bd3014afca1c555b48927e03542ab01094"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-choir-bass-1.3.0.mp3",
          "settingsSha256": "102a0a8990824d5720b0443e64ac6211355c71bd4a3b27a7236e3ff31d90fd32",
          "unchangedFrom": "1.2.1",
          "image": "history-choir-bass-1.3.0.png",
          "sha256": "9c030d63eabfdfc8d585d2ae62fa41bd3014afca1c555b48927e03542ab01094"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-choir-bass-1.4.0.mp3",
          "settingsSha256": "102a0a8990824d5720b0443e64ac6211355c71bd4a3b27a7236e3ff31d90fd32",
          "unchangedFrom": "1.3.0",
          "image": "history-choir-bass-1.4.0.png",
          "sha256": "9c030d63eabfdfc8d585d2ae62fa41bd3014afca1c555b48927e03542ab01094"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-choir-bass-3.5.0.mp3",
          "settingsSha256": "102a0a8990824d5720b0443e64ac6211355c71bd4a3b27a7236e3ff31d90fd32",
          "unchangedFrom": "1.4.0",
          "image": "history-choir-bass-3.5.0.png",
          "sha256": "9c030d63eabfdfc8d585d2ae62fa41bd3014afca1c555b48927e03542ab01094"
        }
      ],
      "references": [
        {
          "url": "https://zenodo.org/api/records/1442513/files/VocalSet11.zip/content",
          "zipRange": {
            "name": "FULL/male8/long_tones/forte/m8_long_forte_a.wav",
            "size": 839966,
            "offset": 1815327166,
            "compressed": 674335
          },
          "sourceUrl": "https://zenodo.org/records/1442513",
          "source": "VocalSet: Julia Wilkins, Prem Seetharaman, Alison Wahl, Bryan Pardo",
          "license": "CC BY 4.0",
          "label": "m8 sustained forte vowel /a/",
          "note": null,
          "estimatePitch": true,
          "sha256": "6cf773ed0ed2d2ddd2a9781a0feae0482b263bb8350aaf00edae130a1f80705c",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 48,
          "features": {
            "rms": 0.019806053992265392,
            "centroidHz": 847.8,
            "centroidVariationPercent": 8.8,
            "upperEnergyPercent": 10.1,
            "attackMs": 2967.6
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://zenodo.org/api/records/1442513/files/VocalSet11.zip/content",
          "zipRange": {
            "name": "FULL/male8/long_tones/forte/m8_long_forte_o.wav",
            "size": 796670,
            "offset": 1813321844,
            "compressed": 646510
          },
          "sourceUrl": "https://zenodo.org/records/1442513",
          "source": "VocalSet: Julia Wilkins, Prem Seetharaman, Alison Wahl, Bryan Pardo",
          "license": "CC BY 4.0",
          "label": "m8 sustained forte vowel /o/",
          "note": null,
          "estimatePitch": true,
          "sha256": "e907127600e817e1f4b99c3ef46b42172a9d74dea17f872a935f00e25197e9f2",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 48,
          "features": {
            "rms": 0.028106867897265297,
            "centroidHz": 709.3,
            "centroidVariationPercent": 13.6,
            "upperEnergyPercent": 10.85,
            "attackMs": 2891.3
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://zenodo.org/api/records/1442513/files/VocalSet11.zip/content",
          "zipRange": {
            "name": "FULL/male8/long_tones/forte/m8_long_forte_u.wav",
            "size": 740386,
            "offset": 1816001610,
            "compressed": 583862
          },
          "sourceUrl": "https://zenodo.org/records/1442513",
          "source": "VocalSet: Julia Wilkins, Prem Seetharaman, Alison Wahl, Bryan Pardo",
          "license": "CC BY 4.0",
          "label": "m8 sustained forte vowel /u/",
          "note": null,
          "estimatePitch": true,
          "sha256": "f5022100599b8d51c8761d0a3ee100281bfd5a49849f872c085316333166437d",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 49,
          "features": {
            "rms": 0.020432408501151234,
            "centroidHz": 546.6,
            "centroidVariationPercent": 19.9,
            "upperEnergyPercent": 11.36,
            "attackMs": 2929.5
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/choir-bass.png",
      "referenceSpectrum": "../timbre-atlas/choir-bass-spectrum.png",
      "coverage": "related",
      "contextual": false
    },
    {
      "id": "solo-soprano",
      "name": "solo soprano",
      "family": "solo-soprano",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-solo-soprano-1.0.0.mp3",
          "settingsSha256": "bfa22eace52befbba344c3b74e4a6a8e733aaa0bfa5c1fefb8c628fc88835e8a",
          "image": "history-solo-soprano-1.0.0.png",
          "sha256": "ee0a1b4b38a91b4b254b9d4397bfbc87ae6ccfb3d900bcd0355800e809273728"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-solo-soprano-1.1.0.mp3",
          "settingsSha256": "4b721120d83328e1e80a321a443a3d088b89cd2a4fd460f4c99ec3ffdb842912",
          "image": "history-solo-soprano-1.1.0.png",
          "sha256": "383435f1966a6034d304ded641ce320f0b0f30bb07d00dc16439e84c894e0a44"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-solo-soprano-1.2.1.mp3",
          "settingsSha256": "4b721120d83328e1e80a321a443a3d088b89cd2a4fd460f4c99ec3ffdb842912",
          "unchangedFrom": "1.1.0",
          "image": "history-solo-soprano-1.2.1.png",
          "sha256": "383435f1966a6034d304ded641ce320f0b0f30bb07d00dc16439e84c894e0a44"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-solo-soprano-1.3.0.mp3",
          "settingsSha256": "4b721120d83328e1e80a321a443a3d088b89cd2a4fd460f4c99ec3ffdb842912",
          "unchangedFrom": "1.2.1",
          "image": "history-solo-soprano-1.3.0.png",
          "sha256": "383435f1966a6034d304ded641ce320f0b0f30bb07d00dc16439e84c894e0a44"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-solo-soprano-1.4.0.mp3",
          "settingsSha256": "4b721120d83328e1e80a321a443a3d088b89cd2a4fd460f4c99ec3ffdb842912",
          "unchangedFrom": "1.3.0",
          "image": "history-solo-soprano-1.4.0.png",
          "sha256": "383435f1966a6034d304ded641ce320f0b0f30bb07d00dc16439e84c894e0a44"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-solo-soprano-3.5.0.mp3",
          "settingsSha256": "4b721120d83328e1e80a321a443a3d088b89cd2a4fd460f4c99ec3ffdb842912",
          "unchangedFrom": "1.4.0",
          "image": "history-solo-soprano-3.5.0.png",
          "sha256": "383435f1966a6034d304ded641ce320f0b0f30bb07d00dc16439e84c894e0a44"
        }
      ],
      "references": [
        {
          "url": "https://zenodo.org/api/records/1442513/files/VocalSet11.zip/content",
          "zipRange": {
            "name": "FULL/female1/long_tones/forte/f1_long_forte_a.wav",
            "size": 998072,
            "offset": 261163392,
            "compressed": 723108
          },
          "sourceUrl": "https://zenodo.org/records/1442513",
          "source": "VocalSet: Julia Wilkins, Prem Seetharaman, Alison Wahl, Bryan Pardo",
          "license": "CC BY 4.0",
          "label": "f1 sustained forte vowel /a/",
          "note": null,
          "estimatePitch": true,
          "sha256": "79c77dbc24f8aba97a878d6896728e559dfc109a2ed23c557c29ae256cdc859c",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.01707786846865584,
            "centroidHz": 809.7,
            "centroidVariationPercent": 9.2,
            "upperEnergyPercent": 2.95,
            "attackMs": 452.5
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://zenodo.org/api/records/1442513/files/VocalSet11.zip/content",
          "zipRange": {
            "name": "FULL/female1/long_tones/forte/f1_long_forte_o.wav",
            "size": 987342,
            "offset": 259773794,
            "compressed": 700587
          },
          "sourceUrl": "https://zenodo.org/records/1442513",
          "source": "VocalSet: Julia Wilkins, Prem Seetharaman, Alison Wahl, Bryan Pardo",
          "license": "CC BY 4.0",
          "label": "f1 sustained forte vowel /o/",
          "note": null,
          "estimatePitch": true,
          "sha256": "d0d115cb447101793878a22be9b9db395b3ccdaa407ea05db57c260c973695d9",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.007450559413236461,
            "centroidHz": 540.3,
            "centroidVariationPercent": 9.1,
            "upperEnergyPercent": 1.99,
            "attackMs": 521.8
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://zenodo.org/api/records/1442513/files/VocalSet11.zip/content",
          "zipRange": {
            "name": "FULL/female1/long_tones/forte/f1_long_forte_u.wav",
            "size": 976610,
            "offset": 260474492,
            "compressed": 688789
          },
          "sourceUrl": "https://zenodo.org/records/1442513",
          "source": "VocalSet: Julia Wilkins, Prem Seetharaman, Alison Wahl, Bryan Pardo",
          "license": "CC BY 4.0",
          "label": "f1 sustained forte vowel /u/",
          "note": null,
          "estimatePitch": true,
          "sha256": "c68080268c96f825afdfbc0d7f7125420a8b6e4008a0676843989fbc30bb62af",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.007151633960858054,
            "centroidHz": 289.2,
            "centroidVariationPercent": 5.9,
            "upperEnergyPercent": 0.19,
            "attackMs": 422.4
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/solo-soprano.png",
      "referenceSpectrum": "../timbre-atlas/solo-soprano-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "solo-tenor",
      "name": "solo tenor",
      "family": "solo-tenor",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-solo-tenor-1.0.0.mp3",
          "settingsSha256": "684704115ad72672265233c33c7cfd314d37909210c92d9fc06889c060823b55",
          "image": "history-solo-tenor-1.0.0.png",
          "sha256": "a9898331b49170a9fecc0c22c08039a241a83ccc081788e3709417439c26a249"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-solo-tenor-1.1.0.mp3",
          "settingsSha256": "1e74554288d6b142d1912671350fe2cea7e538568b4c8c1f4f88f5388c8bfdaf",
          "image": "history-solo-tenor-1.1.0.png",
          "sha256": "b5cd486f844fd93e952fc2d4cf2ac4f7f526ea30818cdbd901bb6c3e7f75aa7b"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-solo-tenor-1.2.1.mp3",
          "settingsSha256": "1e74554288d6b142d1912671350fe2cea7e538568b4c8c1f4f88f5388c8bfdaf",
          "unchangedFrom": "1.1.0",
          "image": "history-solo-tenor-1.2.1.png",
          "sha256": "b5cd486f844fd93e952fc2d4cf2ac4f7f526ea30818cdbd901bb6c3e7f75aa7b"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-solo-tenor-1.3.0.mp3",
          "settingsSha256": "1e74554288d6b142d1912671350fe2cea7e538568b4c8c1f4f88f5388c8bfdaf",
          "unchangedFrom": "1.2.1",
          "image": "history-solo-tenor-1.3.0.png",
          "sha256": "b5cd486f844fd93e952fc2d4cf2ac4f7f526ea30818cdbd901bb6c3e7f75aa7b"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-solo-tenor-1.4.0.mp3",
          "settingsSha256": "1e74554288d6b142d1912671350fe2cea7e538568b4c8c1f4f88f5388c8bfdaf",
          "unchangedFrom": "1.3.0",
          "image": "history-solo-tenor-1.4.0.png",
          "sha256": "b5cd486f844fd93e952fc2d4cf2ac4f7f526ea30818cdbd901bb6c3e7f75aa7b"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-solo-tenor-3.5.0.mp3",
          "settingsSha256": "1e74554288d6b142d1912671350fe2cea7e538568b4c8c1f4f88f5388c8bfdaf",
          "unchangedFrom": "1.4.0",
          "image": "history-solo-tenor-3.5.0.png",
          "sha256": "b5cd486f844fd93e952fc2d4cf2ac4f7f526ea30818cdbd901bb6c3e7f75aa7b"
        }
      ],
      "references": [
        {
          "url": "https://zenodo.org/api/records/1442513/files/VocalSet11.zip/content",
          "zipRange": {
            "name": "FULL/male2/long_tones/forte/m2_long_forte_a.wav",
            "size": 899400,
            "offset": 801495598,
            "compressed": 664004
          },
          "sourceUrl": "https://zenodo.org/records/1442513",
          "source": "VocalSet: Julia Wilkins, Prem Seetharaman, Alison Wahl, Bryan Pardo",
          "license": "CC BY 4.0",
          "label": "m2 sustained forte vowel /a/",
          "note": null,
          "estimatePitch": true,
          "sha256": "1dd686a17a656f5c695b164494721c17ff7a500aefde64aafcc5503fd0c07e3a",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 48,
          "features": {
            "rms": 0.01364659475277047,
            "centroidHz": 828.4,
            "centroidVariationPercent": 10.7,
            "upperEnergyPercent": 5.12,
            "attackMs": 1389.3
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://zenodo.org/api/records/1442513/files/VocalSet11.zip/content",
          "zipRange": {
            "name": "FULL/male2/long_tones/forte/m2_long_forte_o.wav",
            "size": 953758,
            "offset": 798816319,
            "compressed": 718963
          },
          "sourceUrl": "https://zenodo.org/records/1442513",
          "source": "VocalSet: Julia Wilkins, Prem Seetharaman, Alison Wahl, Bryan Pardo",
          "license": "CC BY 4.0",
          "label": "m2 sustained forte vowel /o/",
          "note": null,
          "estimatePitch": true,
          "sha256": "67a5f620ab716a1b46f12a9854a5969cb6994dd59e430c98c10023c7a7b18b9f",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 48,
          "features": {
            "rms": 0.013730847964181003,
            "centroidHz": 521.2,
            "centroidVariationPercent": 7.5,
            "upperEnergyPercent": 3.28,
            "attackMs": 739.8
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://zenodo.org/api/records/1442513/files/VocalSet11.zip/content",
          "zipRange": {
            "name": "FULL/male2/long_tones/forte/m2_long_forte_u.wav",
            "size": 968584,
            "offset": 800780189,
            "compressed": 715300
          },
          "sourceUrl": "https://zenodo.org/records/1442513",
          "source": "VocalSet: Julia Wilkins, Prem Seetharaman, Alison Wahl, Bryan Pardo",
          "license": "CC BY 4.0",
          "label": "m2 sustained forte vowel /u/",
          "note": null,
          "estimatePitch": true,
          "sha256": "55906373ea233e94287bfd1742b5865722c0de882da45c5a7f799fdcc10711c6",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 48,
          "features": {
            "rms": 0.012279145434499967,
            "centroidHz": 360.1,
            "centroidVariationPercent": 18.7,
            "upperEnergyPercent": 0.45,
            "attackMs": 801.2
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/solo-tenor.png",
      "referenceSpectrum": "../timbre-atlas/solo-tenor-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "solo-bass",
      "name": "solo bass",
      "family": "solo-bass",
      "baseMidi": 48,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-solo-bass-1.0.0.mp3",
          "settingsSha256": "8f00062531e7eb756edb1120a64f07fe5c98279cbac09e288f8f8fd3cdd3e008",
          "image": "history-solo-bass-1.0.0.png",
          "sha256": "e39447f01a7b39a1524cae9ec78070e601b68da9098e60e0d848e9c01b857bd4"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-solo-bass-1.1.0.mp3",
          "settingsSha256": "88713626aed1f79968711d11ca8c3c6c2c6d64b97974e93347201094f083fe25",
          "image": "history-solo-bass-1.1.0.png",
          "sha256": "ffaea2bcdf86aa06ce72541b702561c21f051d387df53b31006419cd245cdcb4"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-solo-bass-1.2.1.mp3",
          "settingsSha256": "88713626aed1f79968711d11ca8c3c6c2c6d64b97974e93347201094f083fe25",
          "unchangedFrom": "1.1.0",
          "image": "history-solo-bass-1.2.1.png",
          "sha256": "ffaea2bcdf86aa06ce72541b702561c21f051d387df53b31006419cd245cdcb4"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-solo-bass-1.3.0.mp3",
          "settingsSha256": "88713626aed1f79968711d11ca8c3c6c2c6d64b97974e93347201094f083fe25",
          "unchangedFrom": "1.2.1",
          "image": "history-solo-bass-1.3.0.png",
          "sha256": "ffaea2bcdf86aa06ce72541b702561c21f051d387df53b31006419cd245cdcb4"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-solo-bass-1.4.0.mp3",
          "settingsSha256": "88713626aed1f79968711d11ca8c3c6c2c6d64b97974e93347201094f083fe25",
          "unchangedFrom": "1.3.0",
          "image": "history-solo-bass-1.4.0.png",
          "sha256": "ffaea2bcdf86aa06ce72541b702561c21f051d387df53b31006419cd245cdcb4"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-solo-bass-3.5.0.mp3",
          "settingsSha256": "88713626aed1f79968711d11ca8c3c6c2c6d64b97974e93347201094f083fe25",
          "unchangedFrom": "1.4.0",
          "image": "history-solo-bass-3.5.0.png",
          "sha256": "ffaea2bcdf86aa06ce72541b702561c21f051d387df53b31006419cd245cdcb4"
        }
      ],
      "references": [
        {
          "url": "https://zenodo.org/api/records/1442513/files/VocalSet11.zip/content",
          "zipRange": {
            "name": "FULL/male8/long_tones/forte/m8_long_forte_a.wav",
            "size": 839966,
            "offset": 1815327166,
            "compressed": 674335
          },
          "sourceUrl": "https://zenodo.org/records/1442513",
          "source": "VocalSet: Julia Wilkins, Prem Seetharaman, Alison Wahl, Bryan Pardo",
          "license": "CC BY 4.0",
          "label": "m8 sustained forte vowel /a/",
          "note": null,
          "estimatePitch": true,
          "sha256": "6cf773ed0ed2d2ddd2a9781a0feae0482b263bb8350aaf00edae130a1f80705c",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 48,
          "features": {
            "rms": 0.019806053992265392,
            "centroidHz": 847.8,
            "centroidVariationPercent": 8.8,
            "upperEnergyPercent": 10.1,
            "attackMs": 2967.6
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://zenodo.org/api/records/1442513/files/VocalSet11.zip/content",
          "zipRange": {
            "name": "FULL/male8/long_tones/forte/m8_long_forte_o.wav",
            "size": 796670,
            "offset": 1813321844,
            "compressed": 646510
          },
          "sourceUrl": "https://zenodo.org/records/1442513",
          "source": "VocalSet: Julia Wilkins, Prem Seetharaman, Alison Wahl, Bryan Pardo",
          "license": "CC BY 4.0",
          "label": "m8 sustained forte vowel /o/",
          "note": null,
          "estimatePitch": true,
          "sha256": "e907127600e817e1f4b99c3ef46b42172a9d74dea17f872a935f00e25197e9f2",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 48,
          "features": {
            "rms": 0.028106867897265297,
            "centroidHz": 709.3,
            "centroidVariationPercent": 13.6,
            "upperEnergyPercent": 10.85,
            "attackMs": 2891.3
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://zenodo.org/api/records/1442513/files/VocalSet11.zip/content",
          "zipRange": {
            "name": "FULL/male8/long_tones/forte/m8_long_forte_u.wav",
            "size": 740386,
            "offset": 1816001610,
            "compressed": 583862
          },
          "sourceUrl": "https://zenodo.org/records/1442513",
          "source": "VocalSet: Julia Wilkins, Prem Seetharaman, Alison Wahl, Bryan Pardo",
          "license": "CC BY 4.0",
          "label": "m8 sustained forte vowel /u/",
          "note": null,
          "estimatePitch": true,
          "sha256": "f5022100599b8d51c8761d0a3ee100281bfd5a49849f872c085316333166437d",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 49,
          "features": {
            "rms": 0.020432408501151234,
            "centroidHz": 546.6,
            "centroidVariationPercent": 19.9,
            "upperEnergyPercent": 11.36,
            "attackMs": 2929.5
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/solo-bass.png",
      "referenceSpectrum": "../timbre-atlas/solo-bass-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "voice-ooh",
      "name": "voice ooh",
      "family": "solo-soprano",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-voice-ooh-1.0.0.mp3",
          "settingsSha256": "2ba66daf2d9c85da6254d775472d8641b29aef909ead8e0946a4fdfa1dc316e9",
          "image": "history-voice-ooh-1.0.0.png",
          "sha256": "dec29e7ada324df25a8b7e2262a9e8f0bace7b88bc09773c6429340778590ff9"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-voice-ooh-1.1.0.mp3",
          "settingsSha256": "231df741b9eaa39a21217de0590dcafce029355a5e458fe129c9deac6883444e",
          "image": "history-voice-ooh-1.1.0.png",
          "sha256": "7816ed995fdd6e590f89250c6139c94766e3e1ae24a9003b72304511685f35e7"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-voice-ooh-1.2.1.mp3",
          "settingsSha256": "231df741b9eaa39a21217de0590dcafce029355a5e458fe129c9deac6883444e",
          "unchangedFrom": "1.1.0",
          "image": "history-voice-ooh-1.2.1.png",
          "sha256": "7816ed995fdd6e590f89250c6139c94766e3e1ae24a9003b72304511685f35e7"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-voice-ooh-1.3.0.mp3",
          "settingsSha256": "231df741b9eaa39a21217de0590dcafce029355a5e458fe129c9deac6883444e",
          "unchangedFrom": "1.2.1",
          "image": "history-voice-ooh-1.3.0.png",
          "sha256": "7816ed995fdd6e590f89250c6139c94766e3e1ae24a9003b72304511685f35e7"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-voice-ooh-1.4.0.mp3",
          "settingsSha256": "231df741b9eaa39a21217de0590dcafce029355a5e458fe129c9deac6883444e",
          "unchangedFrom": "1.3.0",
          "image": "history-voice-ooh-1.4.0.png",
          "sha256": "7816ed995fdd6e590f89250c6139c94766e3e1ae24a9003b72304511685f35e7"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-voice-ooh-3.5.0.mp3",
          "settingsSha256": "231df741b9eaa39a21217de0590dcafce029355a5e458fe129c9deac6883444e",
          "unchangedFrom": "1.4.0",
          "image": "history-voice-ooh-3.5.0.png",
          "sha256": "7816ed995fdd6e590f89250c6139c94766e3e1ae24a9003b72304511685f35e7"
        }
      ],
      "references": [
        {
          "url": "https://zenodo.org/api/records/1442513/files/VocalSet11.zip/content",
          "zipRange": {
            "name": "FULL/female1/long_tones/forte/f1_long_forte_a.wav",
            "size": 998072,
            "offset": 261163392,
            "compressed": 723108
          },
          "sourceUrl": "https://zenodo.org/records/1442513",
          "source": "VocalSet: Julia Wilkins, Prem Seetharaman, Alison Wahl, Bryan Pardo",
          "license": "CC BY 4.0",
          "label": "f1 sustained forte vowel /a/",
          "note": null,
          "estimatePitch": true,
          "sha256": "79c77dbc24f8aba97a878d6896728e559dfc109a2ed23c557c29ae256cdc859c",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.01707786846865584,
            "centroidHz": 809.7,
            "centroidVariationPercent": 9.2,
            "upperEnergyPercent": 2.95,
            "attackMs": 452.5
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://zenodo.org/api/records/1442513/files/VocalSet11.zip/content",
          "zipRange": {
            "name": "FULL/female1/long_tones/forte/f1_long_forte_o.wav",
            "size": 987342,
            "offset": 259773794,
            "compressed": 700587
          },
          "sourceUrl": "https://zenodo.org/records/1442513",
          "source": "VocalSet: Julia Wilkins, Prem Seetharaman, Alison Wahl, Bryan Pardo",
          "license": "CC BY 4.0",
          "label": "f1 sustained forte vowel /o/",
          "note": null,
          "estimatePitch": true,
          "sha256": "d0d115cb447101793878a22be9b9db395b3ccdaa407ea05db57c260c973695d9",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.007450559413236461,
            "centroidHz": 540.3,
            "centroidVariationPercent": 9.1,
            "upperEnergyPercent": 1.99,
            "attackMs": 521.8
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://zenodo.org/api/records/1442513/files/VocalSet11.zip/content",
          "zipRange": {
            "name": "FULL/female1/long_tones/forte/f1_long_forte_u.wav",
            "size": 976610,
            "offset": 260474492,
            "compressed": 688789
          },
          "sourceUrl": "https://zenodo.org/records/1442513",
          "source": "VocalSet: Julia Wilkins, Prem Seetharaman, Alison Wahl, Bryan Pardo",
          "license": "CC BY 4.0",
          "label": "f1 sustained forte vowel /u/",
          "note": null,
          "estimatePitch": true,
          "sha256": "c68080268c96f825afdfbc0d7f7125420a8b6e4008a0676843989fbc30bb62af",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.007151633960858054,
            "centroidHz": 289.2,
            "centroidVariationPercent": 5.9,
            "upperEnergyPercent": 0.19,
            "attackMs": 422.4
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/voice-ooh.png",
      "referenceSpectrum": "../timbre-atlas/voice-ooh-spectrum.png",
      "coverage": "related",
      "contextual": false
    },
    {
      "id": "trumpet",
      "name": "trumpet",
      "family": "trumpet",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-trumpet-1.0.0.mp3",
          "settingsSha256": "611d5a0030a33ca203991af6f0c15eed365e265409c302c78a6299383aeee688",
          "image": "history-trumpet-1.0.0.png",
          "sha256": "6b51789ae00b0177c512472d8face454ca19a625d9b80c428ae7951262e0d013"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-trumpet-1.1.0.mp3",
          "settingsSha256": "6012ba6b76d7d7db4a5edfe3cde9b463ec7f2536da4283acb325065b6700af51",
          "image": "history-trumpet-1.1.0.png",
          "sha256": "167da6e756b235cca72d4ce0b2d4f908194cb5f14fdf2ddbfc007f9aa0f72808"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-trumpet-1.2.1.mp3",
          "settingsSha256": "6012ba6b76d7d7db4a5edfe3cde9b463ec7f2536da4283acb325065b6700af51",
          "unchangedFrom": "1.1.0",
          "image": "history-trumpet-1.2.1.png",
          "sha256": "167da6e756b235cca72d4ce0b2d4f908194cb5f14fdf2ddbfc007f9aa0f72808"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-trumpet-1.3.0.mp3",
          "settingsSha256": "6012ba6b76d7d7db4a5edfe3cde9b463ec7f2536da4283acb325065b6700af51",
          "unchangedFrom": "1.2.1",
          "image": "history-trumpet-1.3.0.png",
          "sha256": "167da6e756b235cca72d4ce0b2d4f908194cb5f14fdf2ddbfc007f9aa0f72808"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-trumpet-1.4.0.mp3",
          "settingsSha256": "6012ba6b76d7d7db4a5edfe3cde9b463ec7f2536da4283acb325065b6700af51",
          "unchangedFrom": "1.3.0",
          "image": "history-trumpet-1.4.0.png",
          "sha256": "167da6e756b235cca72d4ce0b2d4f908194cb5f14fdf2ddbfc007f9aa0f72808"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-trumpet-3.5.0.mp3",
          "settingsSha256": "6012ba6b76d7d7db4a5edfe3cde9b463ec7f2536da4283acb325065b6700af51",
          "unchangedFrom": "1.4.0",
          "image": "history-trumpet-3.5.0.png",
          "sha256": "167da6e756b235cca72d4ce0b2d4f908194cb5f14fdf2ddbfc007f9aa0f72808"
        }
      ],
      "references": [
        {
          "archive": "trumpet.zip",
          "member": "trumpet_C4_1_forte_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C4",
          "label": "C4 / 1 / forte / normal",
          "sha256": "bbd95e561a2de2089ace3e152d6aaedb7a9e00c0724b955dc21216083e891923",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.06175576261214265,
            "centroidHz": 926.4,
            "centroidVariationPercent": 5,
            "upperEnergyPercent": 12.08,
            "attackMs": 114.5
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "trumpet.zip",
          "member": "trumpet_C4_1_fortissimo_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C4",
          "label": "C4 / 1 / fortissimo / normal",
          "sha256": "18039ec875d1ae14c362ce9576b15fd8117e06ae9298bf8874bbbe29f314ac63",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.05318877672614087,
            "centroidHz": 969.9,
            "centroidVariationPercent": 7.6,
            "upperEnergyPercent": 11.29,
            "attackMs": 145.2
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "trumpet.zip",
          "member": "trumpet_C4_1_pianissimo_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C4",
          "label": "C4 / 1 / pianissimo / normal",
          "sha256": "b5cbd7146a8e7220aaff5ddac353fd14062c4cb5e141a95542406a92d2a4c1a3",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.02907406378704215,
            "centroidHz": 622.4,
            "centroidVariationPercent": 38,
            "upperEnergyPercent": 0.05,
            "attackMs": 508.4
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/trumpet.png",
      "referenceSpectrum": "../timbre-atlas/trumpet-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "trombone",
      "name": "trombone",
      "family": "trombone",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-trombone-1.0.0.mp3",
          "settingsSha256": "ffd72d1f84c352523bdce0f6132fe1c0561f0f0d716c00deda0ca996cc9a9154",
          "image": "history-trombone-1.0.0.png",
          "sha256": "69c1aa91339aa2fe08c9721ea3c22435ed537de7c0814c61307b68f0c27626dd"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-trombone-1.1.0.mp3",
          "settingsSha256": "fee7c350a8caf228f2b3b68df84d5c2b450e9b8b60c968a3465bb9325ccc9fdf",
          "image": "history-trombone-1.1.0.png",
          "sha256": "ac49b5fb7453a84e6c27e329826817e1a9ca20852004ede7361475b8274ab142"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-trombone-1.2.1.mp3",
          "settingsSha256": "fee7c350a8caf228f2b3b68df84d5c2b450e9b8b60c968a3465bb9325ccc9fdf",
          "unchangedFrom": "1.1.0",
          "image": "history-trombone-1.2.1.png",
          "sha256": "ac49b5fb7453a84e6c27e329826817e1a9ca20852004ede7361475b8274ab142"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-trombone-1.3.0.mp3",
          "settingsSha256": "fee7c350a8caf228f2b3b68df84d5c2b450e9b8b60c968a3465bb9325ccc9fdf",
          "unchangedFrom": "1.2.1",
          "image": "history-trombone-1.3.0.png",
          "sha256": "ac49b5fb7453a84e6c27e329826817e1a9ca20852004ede7361475b8274ab142"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-trombone-1.4.0.mp3",
          "settingsSha256": "fee7c350a8caf228f2b3b68df84d5c2b450e9b8b60c968a3465bb9325ccc9fdf",
          "unchangedFrom": "1.3.0",
          "image": "history-trombone-1.4.0.png",
          "sha256": "ac49b5fb7453a84e6c27e329826817e1a9ca20852004ede7361475b8274ab142"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-trombone-3.5.0.mp3",
          "settingsSha256": "fee7c350a8caf228f2b3b68df84d5c2b450e9b8b60c968a3465bb9325ccc9fdf",
          "unchangedFrom": "1.4.0",
          "image": "history-trombone-3.5.0.png",
          "sha256": "ac49b5fb7453a84e6c27e329826817e1a9ca20852004ede7361475b8274ab142"
        }
      ],
      "references": [
        {
          "archive": "trombone.zip",
          "member": "trombone_C3_1_piano_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C3",
          "label": "C3 / 1 / piano / normal",
          "sha256": "91209dae7791fdbbfea317f7004c1c29e69c0237ee23c255bfcdc05f34e3d037",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 48,
          "features": {
            "rms": 0.011435880268703943,
            "centroidHz": 425.1,
            "centroidVariationPercent": 16.8,
            "upperEnergyPercent": 0.01,
            "attackMs": 124.7
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "trombone.zip",
          "member": "trombone_C3_1_mezzo-forte_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C3",
          "label": "C3 / 1 / mezzo-forte / normal",
          "sha256": "dda65ec89382b9af38503a008024b906e43487868ed1814cd36a37042e48f0b5",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 48,
          "features": {
            "rms": 0.015869773882877494,
            "centroidHz": 750.5,
            "centroidVariationPercent": 30.1,
            "upperEnergyPercent": 2.51,
            "attackMs": 86.3
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "trombone.zip",
          "member": "trombone_C3_1_pianissimo_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C3",
          "label": "C3 / 1 / pianissimo / normal",
          "sha256": "c9bcfabb81696970b43f53a647781378c2123767b15e8b4d53699ecaaf50204d",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 48,
          "features": {
            "rms": 0.012295752288840892,
            "centroidHz": 439.7,
            "centroidVariationPercent": 16.3,
            "upperEnergyPercent": 0,
            "attackMs": 124.2
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/trombone.png",
      "referenceSpectrum": "../timbre-atlas/trombone-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "tuba",
      "name": "tuba",
      "family": "tuba",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-tuba-1.0.0.mp3",
          "settingsSha256": "d4bbd6e9b832c5d3da3582a066903131e5d29781b06f96b5d82279a907e0028e",
          "image": "history-tuba-1.0.0.png",
          "sha256": "9b06b0e67a3ff8a708d8b68c75aeb65889221c6798b40ab1edf940f02f37bd23"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-tuba-1.1.0.mp3",
          "settingsSha256": "7ee42afb9feb4b621542b3df985335842df71f06591011dd5b15d951bad1a15e",
          "image": "history-tuba-1.1.0.png",
          "sha256": "1f531d5aa26b5090bdd0a6b2b29f7aea471bfaad81987c7e44a88d1e93b2deea"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-tuba-1.2.1.mp3",
          "settingsSha256": "7ee42afb9feb4b621542b3df985335842df71f06591011dd5b15d951bad1a15e",
          "unchangedFrom": "1.1.0",
          "image": "history-tuba-1.2.1.png",
          "sha256": "1f531d5aa26b5090bdd0a6b2b29f7aea471bfaad81987c7e44a88d1e93b2deea"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-tuba-1.3.0.mp3",
          "settingsSha256": "7ee42afb9feb4b621542b3df985335842df71f06591011dd5b15d951bad1a15e",
          "unchangedFrom": "1.2.1",
          "image": "history-tuba-1.3.0.png",
          "sha256": "1f531d5aa26b5090bdd0a6b2b29f7aea471bfaad81987c7e44a88d1e93b2deea"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-tuba-1.4.0.mp3",
          "settingsSha256": "7ee42afb9feb4b621542b3df985335842df71f06591011dd5b15d951bad1a15e",
          "unchangedFrom": "1.3.0",
          "image": "history-tuba-1.4.0.png",
          "sha256": "1f531d5aa26b5090bdd0a6b2b29f7aea471bfaad81987c7e44a88d1e93b2deea"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-tuba-3.5.0.mp3",
          "settingsSha256": "7ee42afb9feb4b621542b3df985335842df71f06591011dd5b15d951bad1a15e",
          "unchangedFrom": "1.4.0",
          "image": "history-tuba-3.5.0.png",
          "sha256": "1f531d5aa26b5090bdd0a6b2b29f7aea471bfaad81987c7e44a88d1e93b2deea"
        }
      ],
      "references": [
        {
          "archive": "tuba.zip",
          "member": "tuba_C2_1_piano_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C2",
          "label": "C2 / 1 / piano / normal",
          "sha256": "224bc42a45855cc4b4932615d2ac962542950ce4736f7a74777c273d20f27570",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 37,
          "features": {
            "rms": 0.09751002211406032,
            "centroidHz": 142.8,
            "centroidVariationPercent": 2,
            "upperEnergyPercent": 0,
            "attackMs": 125.9
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "tuba.zip",
          "member": "tuba_C2_1_mezzo-forte_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C2",
          "label": "C2 / 1 / mezzo-forte / normal",
          "sha256": "55605075ef3eccaa876cfea12853a5e943127308193dbc1939f058dcc4958dc6",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 36,
          "features": {
            "rms": 0.06710598993454496,
            "centroidHz": 157.8,
            "centroidVariationPercent": 10.4,
            "upperEnergyPercent": 0,
            "attackMs": 259.2
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "tuba.zip",
          "member": "tuba_C2_1_forte_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C2",
          "label": "C2 / 1 / forte / normal",
          "sha256": "352549bc960d3dbf0b0d75e070211d8bd96c3a3e40ff0cc06bb0b7fad7e383c6",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 36,
          "features": {
            "rms": 0.1210823455825432,
            "centroidHz": 242.7,
            "centroidVariationPercent": 31.6,
            "upperEnergyPercent": 0,
            "attackMs": 114.5
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/tuba.png",
      "referenceSpectrum": "../timbre-atlas/tuba-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "muted-trumpet",
      "name": "muted trumpet",
      "family": "muted-trumpet",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-muted-trumpet-1.0.0.mp3",
          "settingsSha256": "8f10293f40e2a2036eb37020a20eb782ee2279c9c1710c4f5cbe6fb60e9d7cca",
          "image": "history-muted-trumpet-1.0.0.png",
          "sha256": "dfd93c919c7526e67e1be465cd79f9a600b3ca71c46cd5de32ad87eecdf78444"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-muted-trumpet-1.1.0.mp3",
          "settingsSha256": "26999825adf5f2663969355914f972187fdc35cce6a939efc3c9be37501a1b83",
          "image": "history-muted-trumpet-1.1.0.png",
          "sha256": "d3a068f1fab14f60ff762d25bb021aa2608bdfbf6630fa4c3e3b10d89b73e861"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-muted-trumpet-1.2.1.mp3",
          "settingsSha256": "26999825adf5f2663969355914f972187fdc35cce6a939efc3c9be37501a1b83",
          "unchangedFrom": "1.1.0",
          "image": "history-muted-trumpet-1.2.1.png",
          "sha256": "d3a068f1fab14f60ff762d25bb021aa2608bdfbf6630fa4c3e3b10d89b73e861"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-muted-trumpet-1.3.0.mp3",
          "settingsSha256": "26999825adf5f2663969355914f972187fdc35cce6a939efc3c9be37501a1b83",
          "unchangedFrom": "1.2.1",
          "image": "history-muted-trumpet-1.3.0.png",
          "sha256": "d3a068f1fab14f60ff762d25bb021aa2608bdfbf6630fa4c3e3b10d89b73e861"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-muted-trumpet-1.4.0.mp3",
          "settingsSha256": "26999825adf5f2663969355914f972187fdc35cce6a939efc3c9be37501a1b83",
          "unchangedFrom": "1.3.0",
          "image": "history-muted-trumpet-1.4.0.png",
          "sha256": "d3a068f1fab14f60ff762d25bb021aa2608bdfbf6630fa4c3e3b10d89b73e861"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-muted-trumpet-3.5.0.mp3",
          "settingsSha256": "26999825adf5f2663969355914f972187fdc35cce6a939efc3c9be37501a1b83",
          "unchangedFrom": "1.4.0",
          "image": "history-muted-trumpet-3.5.0.png",
          "sha256": "d3a068f1fab14f60ff762d25bb021aa2608bdfbf6630fa4c3e3b10d89b73e861"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/sgossner/VSCO-2-CE/master/Brass/Trumpet/harmonM-sus/Sum_SHTrumpet_harmonM-sus_C3_v1_rr1.wav",
          "source": "VSCO 2 Community Edition",
          "sourceUrl": "https://github.com/sgossner/VSCO-2-CE/blob/master/Brass/Trumpet/harmonM-sus/Sum_SHTrumpet_harmonM-sus_C3_v1_rr1.wav",
          "license": "CC0",
          "label": "Sum_SHTrumpet_harmonM-sus_C3_v1_rr1",
          "note": "C3",
          "sha256": "60da8ae12ad6fdd7467d7af7d20c938eb0773ac00cb4eed44395954df22e0716",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.005909199362562502,
            "centroidHz": 433.2,
            "centroidVariationPercent": 39.6,
            "upperEnergyPercent": 6.38,
            "attackMs": 87
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VSCO-2-CE/master/Brass/Trumpet/harmonM-sus/Sum_SHTrumpet_harmonM-sus_C3_v3_rr1.wav",
          "source": "VSCO 2 Community Edition",
          "sourceUrl": "https://github.com/sgossner/VSCO-2-CE/blob/master/Brass/Trumpet/harmonM-sus/Sum_SHTrumpet_harmonM-sus_C3_v3_rr1.wav",
          "license": "CC0",
          "label": "Sum_SHTrumpet_harmonM-sus_C3_v3_rr1",
          "note": "C3",
          "sha256": "4d73eb4ec4708e6d1b463af8c15df65a17fa9b4acc34acffdc085f45a4f16855",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.017114381898379452,
            "centroidHz": 1073.4,
            "centroidVariationPercent": 28.8,
            "upperEnergyPercent": 33.15,
            "attackMs": 114
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VSCO-2-CE/master/Brass/Trumpet/harmonM-sus/Sum_SHTrumpet_harmonM-sus_A%232_v1_rr1.wav",
          "source": "VSCO 2 Community Edition",
          "sourceUrl": "https://github.com/sgossner/VSCO-2-CE/blob/master/Brass/Trumpet/harmonM-sus/Sum_SHTrumpet_harmonM-sus_A%232_v1_rr1.wav",
          "license": "CC0",
          "label": "Sum_SHTrumpet_harmonM-sus_A#2_v1_rr1",
          "note": "A#2",
          "sha256": "61771fba9b5704bdbfbd5752c7516746d03bfadddcf719c8f4360b552d239a4c",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 58,
          "features": {
            "rms": 0.00402472435236395,
            "centroidHz": 593.6,
            "centroidVariationPercent": 29.1,
            "upperEnergyPercent": 13.8,
            "attackMs": 21.8
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/muted-trumpet.png",
      "referenceSpectrum": "../timbre-atlas/muted-trumpet-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "french-horn",
      "name": "french horn",
      "family": "french-horn",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-french-horn-1.0.0.mp3",
          "settingsSha256": "36f044ae4be571d8c7d44be104b6e43a4661ca7f825855bf60c574b674cc405e",
          "image": "history-french-horn-1.0.0.png",
          "sha256": "a6a2590ef77b2f1c61b594d79afd21e5bc95c6576c9f4306c57c05fd19f09c3d"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-french-horn-1.1.0.mp3",
          "settingsSha256": "2c74a9c00529bcd2619b525b6b90ee8e035ba37ef0d7b8b5ddf1a6e419dba78c",
          "image": "history-french-horn-1.1.0.png",
          "sha256": "499255e93c647399bf2556a71b0dbcdd93d403584f61302eecbd7946e17553eb"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-french-horn-1.2.1.mp3",
          "settingsSha256": "2c74a9c00529bcd2619b525b6b90ee8e035ba37ef0d7b8b5ddf1a6e419dba78c",
          "unchangedFrom": "1.1.0",
          "image": "history-french-horn-1.2.1.png",
          "sha256": "499255e93c647399bf2556a71b0dbcdd93d403584f61302eecbd7946e17553eb"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-french-horn-1.3.0.mp3",
          "settingsSha256": "2c74a9c00529bcd2619b525b6b90ee8e035ba37ef0d7b8b5ddf1a6e419dba78c",
          "unchangedFrom": "1.2.1",
          "image": "history-french-horn-1.3.0.png",
          "sha256": "499255e93c647399bf2556a71b0dbcdd93d403584f61302eecbd7946e17553eb"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-french-horn-1.4.0.mp3",
          "settingsSha256": "2c74a9c00529bcd2619b525b6b90ee8e035ba37ef0d7b8b5ddf1a6e419dba78c",
          "unchangedFrom": "1.3.0",
          "image": "history-french-horn-1.4.0.png",
          "sha256": "499255e93c647399bf2556a71b0dbcdd93d403584f61302eecbd7946e17553eb"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-french-horn-3.5.0.mp3",
          "settingsSha256": "2c74a9c00529bcd2619b525b6b90ee8e035ba37ef0d7b8b5ddf1a6e419dba78c",
          "unchangedFrom": "1.4.0",
          "image": "history-french-horn-3.5.0.png",
          "sha256": "499255e93c647399bf2556a71b0dbcdd93d403584f61302eecbd7946e17553eb"
        }
      ],
      "references": [
        {
          "archive": "french horn.zip",
          "member": "french-horn_C3_1_piano_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C3",
          "label": "C3 / 1 / piano / normal",
          "sha256": "93f5ffa033d633110e2ec0e7828852eef3ecc71d543f87655620be9722788db9",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 48,
          "features": {
            "rms": 0.010741044007962617,
            "centroidHz": 365.7,
            "centroidVariationPercent": 2.1,
            "upperEnergyPercent": 0,
            "attackMs": 187.6
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "french horn.zip",
          "member": "french-horn_C3_1_mezzo-forte_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C3",
          "label": "C3 / 1 / mezzo-forte / normal",
          "sha256": "25bcbe44fcc2601839cfcdfc845fd41af91e9bad189d0d44832b503ae661a458",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 48,
          "features": {
            "rms": 0.025411853163968576,
            "centroidHz": 408.4,
            "centroidVariationPercent": 1.9,
            "upperEnergyPercent": 0,
            "attackMs": 186.9
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "french horn.zip",
          "member": "french-horn_C3_very-long_forte_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C3",
          "label": "C3 / very-long / forte / normal",
          "sha256": "71a220df179d08a41152b0575b34153fa0368b4005a65bd1a783d86e303996ad",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 48,
          "features": {
            "rms": 0.03434087563855649,
            "centroidHz": 506.7,
            "centroidVariationPercent": 5.3,
            "upperEnergyPercent": 0.24,
            "attackMs": 236.3
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/french-horn.png",
      "referenceSpectrum": "../timbre-atlas/french-horn-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "brass-section",
      "name": "brass section",
      "family": "trumpet",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-brass-section-1.0.0.mp3",
          "settingsSha256": "33a454f6bf4d63c564627a5d7133a5d170a7ba3ea24760bb325df1bc5c0f0cd7",
          "image": "history-brass-section-1.0.0.png",
          "sha256": "94d5a0a05f34e9ca630651c3a233a4ce9ff72239bb7f4dbae08cef0dd74c78c3"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-brass-section-1.1.0.mp3",
          "settingsSha256": "2684d58c31fdd60284f7326940f5617fb01f6f8f976476551ca04369de74591d",
          "image": "history-brass-section-1.1.0.png",
          "sha256": "e7d5c67edeafad77c1e7dadd274fad20b009c06a036e11ae90e2143a8cbc080a"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-brass-section-1.2.1.mp3",
          "settingsSha256": "2684d58c31fdd60284f7326940f5617fb01f6f8f976476551ca04369de74591d",
          "unchangedFrom": "1.1.0",
          "image": "history-brass-section-1.2.1.png",
          "sha256": "e7d5c67edeafad77c1e7dadd274fad20b009c06a036e11ae90e2143a8cbc080a"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-brass-section-1.3.0.mp3",
          "settingsSha256": "2684d58c31fdd60284f7326940f5617fb01f6f8f976476551ca04369de74591d",
          "unchangedFrom": "1.2.1",
          "image": "history-brass-section-1.3.0.png",
          "sha256": "e7d5c67edeafad77c1e7dadd274fad20b009c06a036e11ae90e2143a8cbc080a"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-brass-section-1.4.0.mp3",
          "settingsSha256": "2684d58c31fdd60284f7326940f5617fb01f6f8f976476551ca04369de74591d",
          "unchangedFrom": "1.3.0",
          "image": "history-brass-section-1.4.0.png",
          "sha256": "e7d5c67edeafad77c1e7dadd274fad20b009c06a036e11ae90e2143a8cbc080a"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-brass-section-3.5.0.mp3",
          "settingsSha256": "2684d58c31fdd60284f7326940f5617fb01f6f8f976476551ca04369de74591d",
          "unchangedFrom": "1.4.0",
          "image": "history-brass-section-3.5.0.png",
          "sha256": "e7d5c67edeafad77c1e7dadd274fad20b009c06a036e11ae90e2143a8cbc080a"
        }
      ],
      "references": [
        {
          "archive": "trumpet.zip",
          "member": "trumpet_C4_1_forte_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C4",
          "label": "C4 / 1 / forte / normal",
          "sha256": "bbd95e561a2de2089ace3e152d6aaedb7a9e00c0724b955dc21216083e891923",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.06175576261214265,
            "centroidHz": 926.4,
            "centroidVariationPercent": 5,
            "upperEnergyPercent": 12.08,
            "attackMs": 114.5
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "trumpet.zip",
          "member": "trumpet_C4_1_fortissimo_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C4",
          "label": "C4 / 1 / fortissimo / normal",
          "sha256": "18039ec875d1ae14c362ce9576b15fd8117e06ae9298bf8874bbbe29f314ac63",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.05318877672614087,
            "centroidHz": 969.9,
            "centroidVariationPercent": 7.6,
            "upperEnergyPercent": 11.29,
            "attackMs": 145.2
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "trumpet.zip",
          "member": "trumpet_C4_1_pianissimo_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C4",
          "label": "C4 / 1 / pianissimo / normal",
          "sha256": "b5cbd7146a8e7220aaff5ddac353fd14062c4cb5e141a95542406a92d2a4c1a3",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.02907406378704215,
            "centroidHz": 622.4,
            "centroidVariationPercent": 38,
            "upperEnergyPercent": 0.05,
            "attackMs": 508.4
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/brass-section.png",
      "referenceSpectrum": "../timbre-atlas/brass-section-spectrum.png",
      "coverage": "related",
      "contextual": false
    },
    {
      "id": "soprano-sax",
      "name": "soprano sax",
      "family": "saxophone",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-soprano-sax-1.0.0.mp3",
          "settingsSha256": "803442ebaf21f5ca0331058b2d99e42a7dd7aba077d1d8f03b596f6cdaafc7d5",
          "image": "history-soprano-sax-1.0.0.png",
          "sha256": "4add955535442d64b4fceb9b07162af5504809d210d0833fa6ebfff5691259a3"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-soprano-sax-1.1.0.mp3",
          "settingsSha256": "a0bd27b4e41823ac75badeeb124fdf1c99222f695dfa5185ac433a75ed43f09b",
          "image": "history-soprano-sax-1.1.0.png",
          "sha256": "2300bbf3cd7c5d60dbf47e031f4f975ee49d3dae5a0e545a7bf9a0174237406e"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-soprano-sax-1.2.1.mp3",
          "settingsSha256": "884c5d7d90b8a35a2ac8111050ddb1ac5afe3a63955741e4218e562516d3bdb1",
          "image": "history-soprano-sax-1.2.1.png",
          "sha256": "22f5ce1575c5abaff1a2013dabe617c495330f571fd05cb8902c3a20206f48fc"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-soprano-sax-1.3.0.mp3",
          "settingsSha256": "884c5d7d90b8a35a2ac8111050ddb1ac5afe3a63955741e4218e562516d3bdb1",
          "unchangedFrom": "1.2.1",
          "image": "history-soprano-sax-1.3.0.png",
          "sha256": "22f5ce1575c5abaff1a2013dabe617c495330f571fd05cb8902c3a20206f48fc"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-soprano-sax-1.4.0.mp3",
          "settingsSha256": "884c5d7d90b8a35a2ac8111050ddb1ac5afe3a63955741e4218e562516d3bdb1",
          "unchangedFrom": "1.3.0",
          "image": "history-soprano-sax-1.4.0.png",
          "sha256": "22f5ce1575c5abaff1a2013dabe617c495330f571fd05cb8902c3a20206f48fc"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-soprano-sax-3.5.0.mp3",
          "settingsSha256": "884c5d7d90b8a35a2ac8111050ddb1ac5afe3a63955741e4218e562516d3bdb1",
          "unchangedFrom": "1.4.0",
          "image": "history-soprano-sax-3.5.0.png",
          "sha256": "22f5ce1575c5abaff1a2013dabe617c495330f571fd05cb8902c3a20206f48fc"
        }
      ],
      "references": [
        {
          "archive": "saxophone.zip",
          "member": "saxophone_C4_05_piano_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C4",
          "label": "C4 / 05 / piano / normal",
          "sha256": "6e2e5f6ac3cc09f06a0e890eb088331522b31101608f1c7cf825def134314498",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 61,
          "features": {
            "rms": 0.045143267607403545,
            "centroidHz": 347,
            "centroidVariationPercent": 2.9,
            "upperEnergyPercent": 0.08,
            "attackMs": 74.5
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "saxophone.zip",
          "member": "saxophone_C4_1_mezzo-forte_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C4",
          "label": "C4 / 1 / mezzo-forte / normal",
          "sha256": "131f7550bfe8b6007e90c30ddd28f3d38243d04c5517851071e01e0a13a9d3b0",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.050009689360727055,
            "centroidHz": 350.5,
            "centroidVariationPercent": 2.4,
            "upperEnergyPercent": 0.08,
            "attackMs": 103.4
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "saxophone.zip",
          "member": "saxophone_C4_1_forte_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C4",
          "label": "C4 / 1 / forte / normal",
          "sha256": "383d06b8e819a3737dfa716b59f07f661b1355a767609c69b9622a68e045f8b2",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 59,
          "features": {
            "rms": 0.040521526469283004,
            "centroidHz": 1030.6,
            "centroidVariationPercent": 4.7,
            "upperEnergyPercent": 15.68,
            "attackMs": 35.6
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/soprano-sax.png",
      "referenceSpectrum": "../timbre-atlas/soprano-sax-spectrum.png",
      "coverage": "related",
      "contextual": false
    },
    {
      "id": "alto-sax",
      "name": "alto sax",
      "family": "saxophone",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-alto-sax-1.0.0.mp3",
          "settingsSha256": "735b420c5d19c056075e1ce968ed81739fd261b90ffe5de6c4c9b2236d47ddba",
          "image": "history-alto-sax-1.0.0.png",
          "sha256": "cbbe71477c5d2b0b8b326d0298807ef4b6ac35d10d21d4ae0a9a8127d231a333"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-alto-sax-1.1.0.mp3",
          "settingsSha256": "acecc636a6c9b74894ea1efdf546afa751bad6e657b29f60848abfd854350bd6",
          "image": "history-alto-sax-1.1.0.png",
          "sha256": "d7025a457382bc39b229eece08e4980363d5ef3df8c98fcfc587229d2ddc0250"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-alto-sax-1.2.1.mp3",
          "settingsSha256": "ec96b4b5fe4018afd02340b9ebe21879a930778652bb5e262ce1775a210adb88",
          "image": "history-alto-sax-1.2.1.png",
          "sha256": "47b6a350f0b91e76765392118f6efcee230b83554e4431a1b0b90a4e98cd2039"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-alto-sax-1.3.0.mp3",
          "settingsSha256": "ec96b4b5fe4018afd02340b9ebe21879a930778652bb5e262ce1775a210adb88",
          "unchangedFrom": "1.2.1",
          "image": "history-alto-sax-1.3.0.png",
          "sha256": "47b6a350f0b91e76765392118f6efcee230b83554e4431a1b0b90a4e98cd2039"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-alto-sax-1.4.0.mp3",
          "settingsSha256": "ec96b4b5fe4018afd02340b9ebe21879a930778652bb5e262ce1775a210adb88",
          "unchangedFrom": "1.3.0",
          "image": "history-alto-sax-1.4.0.png",
          "sha256": "47b6a350f0b91e76765392118f6efcee230b83554e4431a1b0b90a4e98cd2039"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-alto-sax-3.5.0.mp3",
          "settingsSha256": "ec96b4b5fe4018afd02340b9ebe21879a930778652bb5e262ce1775a210adb88",
          "unchangedFrom": "1.4.0",
          "image": "history-alto-sax-3.5.0.png",
          "sha256": "47b6a350f0b91e76765392118f6efcee230b83554e4431a1b0b90a4e98cd2039"
        }
      ],
      "references": [
        {
          "archive": "saxophone.zip",
          "member": "saxophone_C4_05_piano_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C4",
          "label": "C4 / 05 / piano / normal",
          "sha256": "6e2e5f6ac3cc09f06a0e890eb088331522b31101608f1c7cf825def134314498",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 61,
          "features": {
            "rms": 0.045143267607403545,
            "centroidHz": 347,
            "centroidVariationPercent": 2.9,
            "upperEnergyPercent": 0.08,
            "attackMs": 74.5
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "saxophone.zip",
          "member": "saxophone_C4_1_mezzo-forte_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C4",
          "label": "C4 / 1 / mezzo-forte / normal",
          "sha256": "131f7550bfe8b6007e90c30ddd28f3d38243d04c5517851071e01e0a13a9d3b0",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.050009689360727055,
            "centroidHz": 350.5,
            "centroidVariationPercent": 2.4,
            "upperEnergyPercent": 0.08,
            "attackMs": 103.4
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "saxophone.zip",
          "member": "saxophone_C4_1_forte_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C4",
          "label": "C4 / 1 / forte / normal",
          "sha256": "383d06b8e819a3737dfa716b59f07f661b1355a767609c69b9622a68e045f8b2",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 59,
          "features": {
            "rms": 0.040521526469283004,
            "centroidHz": 1030.6,
            "centroidVariationPercent": 4.7,
            "upperEnergyPercent": 15.68,
            "attackMs": 35.6
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/alto-sax.png",
      "referenceSpectrum": "../timbre-atlas/alto-sax-spectrum.png",
      "coverage": "related",
      "contextual": false
    },
    {
      "id": "tenor-sax",
      "name": "tenor sax",
      "family": "tenor-sax",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-tenor-sax-1.0.0.mp3",
          "settingsSha256": "59259151adda0bb653ab5197f2934070f2a59491eae7f0891a143703e4d9b281",
          "image": "history-tenor-sax-1.0.0.png",
          "sha256": "a531202696e516348711f10be42f962b1c62cab2fabd91232ff3bd9a95928b75"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-tenor-sax-1.1.0.mp3",
          "settingsSha256": "f9cb840f330daf11ec942a18af796171ccd3a3c7f1538f4247b271322723529b",
          "image": "history-tenor-sax-1.1.0.png",
          "sha256": "682c10a4acbacdf288e8d576c11eb1d536190f26d22950f05fb0bcc764771842"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-tenor-sax-1.2.1.mp3",
          "settingsSha256": "d75b3207fa84032a29097974343a2dd8e7d7823d11cb0cabcd8f8258eab981b3",
          "image": "history-tenor-sax-1.2.1.png",
          "sha256": "4b6f9285e33e1f5059da9e9eae57e8953516fb748d3b79697e902041c24eff8e"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "First measured harmonic-envelope sources; frozen release renderer.",
          "audio": "history-tenor-sax-1.3.0.mp3",
          "settingsSha256": "ba3b381b3c95146271e200963349303099e2ad7d1d45764d8e3ffc14e13069a1",
          "image": "history-tenor-sax-1.3.0.png",
          "sha256": "9d222db710ec5beb88736c6444a38695f11dcfeb81464c9e111ed788b7793bd5"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Measured onset contours, sixteen harmonic frames and eight residual-noise bands.",
          "audio": "history-tenor-sax-1.4.0.mp3",
          "settingsSha256": "ba3b381b3c95146271e200963349303099e2ad7d1d45764d8e3ffc14e13069a1",
          "image": "history-tenor-sax-1.4.0.png",
          "sha256": "1de8ba64be8dc90482c2564d573a508231838daa8cc92aec402741c5b5fdde79"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-tenor-sax-3.5.0.mp3",
          "settingsSha256": "ba3b381b3c95146271e200963349303099e2ad7d1d45764d8e3ffc14e13069a1",
          "unchangedFrom": "1.4.0",
          "image": "history-tenor-sax-3.5.0.png",
          "sha256": "1de8ba64be8dc90482c2564d573a508231838daa8cc92aec402741c5b5fdde79"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Aerophones/Reed%20Aerophones/Tenor%20Saxophone/Non-Vibrato/BrettTenor_NV_Main_C3_vl2_rr1.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Aerophones/Reed%20Aerophones/Tenor%20Saxophone/Non-Vibrato/BrettTenor_NV_Main_C3_vl2_rr1.wav",
          "license": "CC0",
          "label": "BrettTenor_NV_Main_C3_vl2_rr1",
          "note": "C3",
          "sha256": "4afeef41e7f3a5df8c47a3f31389b5948837fe8b21c9e3e9e135829e44050677",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.014966603565160108,
            "centroidHz": 524.3,
            "centroidVariationPercent": 0.2,
            "upperEnergyPercent": 0.12,
            "attackMs": 70.2
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Aerophones/Reed%20Aerophones/Tenor%20Saxophone/Non-Vibrato/BrettTenor_NV_Main_C3_vl3_rr1.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Aerophones/Reed%20Aerophones/Tenor%20Saxophone/Non-Vibrato/BrettTenor_NV_Main_C3_vl3_rr1.wav",
          "license": "CC0",
          "label": "BrettTenor_NV_Main_C3_vl3_rr1",
          "note": "C3",
          "sha256": "17f42eaba3aba3e2e6d66b62e4ba5e8120d1760fd1a7e835829fe84f74385106",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.05135880724574462,
            "centroidHz": 572.5,
            "centroidVariationPercent": 1.9,
            "upperEnergyPercent": 4.3,
            "attackMs": 25.3
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Aerophones/Reed%20Aerophones/Tenor%20Saxophone/Staccato/BrettTenor_Staccato_Main_C3_vl1_rr4.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Aerophones/Reed%20Aerophones/Tenor%20Saxophone/Staccato/BrettTenor_Staccato_Main_C3_vl1_rr4.wav",
          "license": "CC0",
          "label": "BrettTenor_Staccato_Main_C3_vl1_rr4",
          "note": "C3",
          "sha256": "e13e2a8575231caba175e31ca61cb824c20b2e948ae1ef5e337228d47a1a2ea6",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.019581257298838018,
            "centroidHz": 414.5,
            "centroidVariationPercent": 16.8,
            "upperEnergyPercent": 0.45,
            "attackMs": 48.9
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/tenor-sax.png",
      "referenceSpectrum": "../timbre-atlas/tenor-sax-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "baritone-sax",
      "name": "baritone sax",
      "family": "saxophone",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-baritone-sax-1.0.0.mp3",
          "settingsSha256": "b2ba8c72ef1467d40cd38360a10a98164e2f5c5490dbaab5c840f318d4326618",
          "image": "history-baritone-sax-1.0.0.png",
          "sha256": "0f3db13ee818735836f556bad17b6c1ab6736ff570ff86418a7080f7eed843de"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-baritone-sax-1.1.0.mp3",
          "settingsSha256": "f61a4e002b89cd86b788d6fd95ea88522194715abf3951a010040b27140fd071",
          "image": "history-baritone-sax-1.1.0.png",
          "sha256": "edf0dd2ae2912d75c55a2e42d2615860ab6d4944a1fdcb05de54fcca5f4a3aec"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-baritone-sax-1.2.1.mp3",
          "settingsSha256": "2ebb05835a8d752502d5f062da4a458bde7c3b67fe51ed7ec84f522567e8bf80",
          "image": "history-baritone-sax-1.2.1.png",
          "sha256": "4985a04d2bc86109957b5e90b5823edd335cb86ebd114b8b38c161cf00e8f977"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-baritone-sax-1.3.0.mp3",
          "settingsSha256": "2ebb05835a8d752502d5f062da4a458bde7c3b67fe51ed7ec84f522567e8bf80",
          "unchangedFrom": "1.2.1",
          "image": "history-baritone-sax-1.3.0.png",
          "sha256": "4985a04d2bc86109957b5e90b5823edd335cb86ebd114b8b38c161cf00e8f977"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-baritone-sax-1.4.0.mp3",
          "settingsSha256": "2ebb05835a8d752502d5f062da4a458bde7c3b67fe51ed7ec84f522567e8bf80",
          "unchangedFrom": "1.3.0",
          "image": "history-baritone-sax-1.4.0.png",
          "sha256": "4985a04d2bc86109957b5e90b5823edd335cb86ebd114b8b38c161cf00e8f977"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-baritone-sax-3.5.0.mp3",
          "settingsSha256": "2ebb05835a8d752502d5f062da4a458bde7c3b67fe51ed7ec84f522567e8bf80",
          "unchangedFrom": "1.4.0",
          "image": "history-baritone-sax-3.5.0.png",
          "sha256": "4985a04d2bc86109957b5e90b5823edd335cb86ebd114b8b38c161cf00e8f977"
        }
      ],
      "references": [
        {
          "archive": "saxophone.zip",
          "member": "saxophone_C4_05_piano_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C4",
          "label": "C4 / 05 / piano / normal",
          "sha256": "6e2e5f6ac3cc09f06a0e890eb088331522b31101608f1c7cf825def134314498",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 61,
          "features": {
            "rms": 0.045143267607403545,
            "centroidHz": 347,
            "centroidVariationPercent": 2.9,
            "upperEnergyPercent": 0.08,
            "attackMs": 74.5
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "saxophone.zip",
          "member": "saxophone_C4_1_mezzo-forte_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C4",
          "label": "C4 / 1 / mezzo-forte / normal",
          "sha256": "131f7550bfe8b6007e90c30ddd28f3d38243d04c5517851071e01e0a13a9d3b0",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.050009689360727055,
            "centroidHz": 350.5,
            "centroidVariationPercent": 2.4,
            "upperEnergyPercent": 0.08,
            "attackMs": 103.4
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "saxophone.zip",
          "member": "saxophone_C4_1_forte_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C4",
          "label": "C4 / 1 / forte / normal",
          "sha256": "383d06b8e819a3737dfa716b59f07f661b1355a767609c69b9622a68e045f8b2",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 59,
          "features": {
            "rms": 0.040521526469283004,
            "centroidHz": 1030.6,
            "centroidVariationPercent": 4.7,
            "upperEnergyPercent": 15.68,
            "attackMs": 35.6
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/baritone-sax.png",
      "referenceSpectrum": "../timbre-atlas/baritone-sax-spectrum.png",
      "coverage": "related",
      "contextual": false
    },
    {
      "id": "shehnai",
      "name": "shehnai",
      "family": "shehnai",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-shehnai-1.0.0.mp3",
          "settingsSha256": "ac722d7fe1b04749017a5b1d0830343091c33f70435ccb5de675ba04e0835681",
          "image": "history-shehnai-1.0.0.png",
          "sha256": "bfc2663bbf752945309ef12a123409f3570bc86a63fb046c626d1b96d0111a13"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-shehnai-1.1.0.mp3",
          "settingsSha256": "0a5299b5eb9ed3996f99b35fe02527b4ebdfbffe12594572c4c2580285e73ded",
          "image": "history-shehnai-1.1.0.png",
          "sha256": "17a7a9166ca4670db53ed0a081f3be957c2fc79f21d1dd898095dde58aa27718"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-shehnai-1.2.1.mp3",
          "settingsSha256": "d40146b334ce8e071b8f28216c55867342f02f108770499b065908779bfdd6f8",
          "image": "history-shehnai-1.2.1.png",
          "sha256": "b44b24006fe01cc9f0894238458b5b81f6d4027f3b77321c4e8c44b58db2dc34"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-shehnai-1.3.0.mp3",
          "settingsSha256": "d40146b334ce8e071b8f28216c55867342f02f108770499b065908779bfdd6f8",
          "unchangedFrom": "1.2.1",
          "image": "history-shehnai-1.3.0.png",
          "sha256": "b44b24006fe01cc9f0894238458b5b81f6d4027f3b77321c4e8c44b58db2dc34"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-shehnai-1.4.0.mp3",
          "settingsSha256": "d40146b334ce8e071b8f28216c55867342f02f108770499b065908779bfdd6f8",
          "unchangedFrom": "1.3.0",
          "image": "history-shehnai-1.4.0.png",
          "sha256": "b44b24006fe01cc9f0894238458b5b81f6d4027f3b77321c4e8c44b58db2dc34"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-shehnai-3.5.0.mp3",
          "settingsSha256": "d40146b334ce8e071b8f28216c55867342f02f108770499b065908779bfdd6f8",
          "unchangedFrom": "1.4.0",
          "image": "history-shehnai-3.5.0.png",
          "sha256": "b44b24006fe01cc9f0894238458b5b81f6d4027f3b77321c4e8c44b58db2dc34"
        }
      ],
      "references": [
        {
          "url": "https://cdn.freesound.org/previews/261/261871_1376192-hq.mp3",
          "sourceUrl": "https://freesound.org/people/bohitomi/sounds/261871/",
          "source": "Tam\u00e1s Boh\u00e1cs / bohitomi",
          "license": "CC BY 4.0",
          "label": "Temple performance with tabla, crowd and drone; compressed preview",
          "note": null,
          "contextual": true,
          "start": 20,
          "sha256": "686153adbf319278895c1014e936935d48427e332cce54947e9b856659442212",
          "noteOffset": 0,
          "measuredMidi": null,
          "features": {
            "rms": 0.14567206779738104,
            "centroidHz": 306.6,
            "centroidVariationPercent": 56,
            "upperEnergyPercent": 0.83,
            "attackMs": 380.7
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://cdn.freesound.org/previews/261/261868_1376192-hq.mp3",
          "sourceUrl": "https://freesound.org/people/bohitomi/sounds/261868/",
          "source": "Tam\u00e1s Boh\u00e1cs / bohitomi",
          "license": "CC BY 4.0",
          "label": "Temple performance with tabla, crowd and drone; compressed preview",
          "note": null,
          "contextual": true,
          "start": 10,
          "sha256": "eb7c1d20b4c934841b05e20b986d6d8ad505e5fdc6fe56e2cb0b3edf01b4583e",
          "noteOffset": 0,
          "measuredMidi": null,
          "features": {
            "rms": 0.07471897290986991,
            "centroidHz": 1424.7,
            "centroidVariationPercent": 8.7,
            "upperEnergyPercent": 19.99,
            "attackMs": 1248.8
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://cdn.freesound.org/previews/395/395024_6305509-hq.mp3",
          "sourceUrl": "https://freesound.org/people/bobv2/sounds/395024/",
          "source": "bobv2",
          "license": "CC0",
          "label": "Wedding performance, multiple instruments; compressed preview",
          "note": null,
          "contextual": true,
          "start": 25,
          "sha256": "ba572de4f0818923a6cca21d12b843af8c95081c0f279cfe67bed1fe351a4ad0",
          "noteOffset": 0,
          "measuredMidi": null,
          "features": {
            "rms": 0.1027850051344703,
            "centroidHz": 1546.7,
            "centroidVariationPercent": 37.9,
            "upperEnergyPercent": 18.5,
            "attackMs": 862.5
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/shehnai.png",
      "referenceSpectrum": "../timbre-atlas/shehnai-spectrum.png",
      "coverage": "instrument",
      "contextual": true
    },
    {
      "id": "oboe",
      "name": "oboe",
      "family": "oboe",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-oboe-1.0.0.mp3",
          "settingsSha256": "e790a1498ef65d312817770bb1a8a29a060b764aac7d6cd59fb20031cc451c52",
          "image": "history-oboe-1.0.0.png",
          "sha256": "c80e4de2e3af56d9ff1947bb6a64e6191a7ace0ee69c109b2dfe4afedaea5ead"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-oboe-1.1.0.mp3",
          "settingsSha256": "4fbdc7d83378b7ebf8d13f433a6cf6ca07d1adf401c8592a3c55e48c09668b36",
          "image": "history-oboe-1.1.0.png",
          "sha256": "22d029f58f33629a6c4b52f9d222495263857b4f954741455144605549b7196f"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-oboe-1.2.1.mp3",
          "settingsSha256": "62320e549db16c201411147d674344127b7e5a579a0ca7e348ab2780054dfa3c",
          "image": "history-oboe-1.2.1.png",
          "sha256": "101d43c16591e8c9459d031c7f4a11b906d8873db404230f3149982a6b3210ec"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-oboe-1.3.0.mp3",
          "settingsSha256": "62320e549db16c201411147d674344127b7e5a579a0ca7e348ab2780054dfa3c",
          "unchangedFrom": "1.2.1",
          "image": "history-oboe-1.3.0.png",
          "sha256": "101d43c16591e8c9459d031c7f4a11b906d8873db404230f3149982a6b3210ec"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-oboe-1.4.0.mp3",
          "settingsSha256": "62320e549db16c201411147d674344127b7e5a579a0ca7e348ab2780054dfa3c",
          "unchangedFrom": "1.3.0",
          "image": "history-oboe-1.4.0.png",
          "sha256": "101d43c16591e8c9459d031c7f4a11b906d8873db404230f3149982a6b3210ec"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-oboe-3.5.0.mp3",
          "settingsSha256": "62320e549db16c201411147d674344127b7e5a579a0ca7e348ab2780054dfa3c",
          "unchangedFrom": "1.4.0",
          "image": "history-oboe-3.5.0.png",
          "sha256": "101d43c16591e8c9459d031c7f4a11b906d8873db404230f3149982a6b3210ec"
        }
      ],
      "references": [
        {
          "archive": "oboe.zip",
          "member": "oboe_C5_1_mezzo-forte_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C5",
          "label": "C5 / 1 / mezzo-forte / normal",
          "sha256": "0394af6e1178359ce6611a5ec3a4191bdeef4221675d3a1b8e61e3e01b48d0a0",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.018702581414958896,
            "centroidHz": 1460.6,
            "centroidVariationPercent": 4.7,
            "upperEnergyPercent": 1.49,
            "attackMs": 351.9
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "oboe.zip",
          "member": "oboe_C5_1_forte_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C5",
          "label": "C5 / 1 / forte / normal",
          "sha256": "322644165935bb714bfaf0409c827933606de00f193572df6378c1dac6f1797a",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.04867656250261,
            "centroidHz": 1541.9,
            "centroidVariationPercent": 1.1,
            "upperEnergyPercent": 2.4,
            "attackMs": 139.5
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "oboe.zip",
          "member": "oboe_C5_1_fortissimo_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C5",
          "label": "C5 / 1 / fortissimo / normal",
          "sha256": "949086a259f5759db999e59565cc197ca119ee97440df4292f0c837d3ec6b1ef",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.03689243547873805,
            "centroidHz": 1531.5,
            "centroidVariationPercent": 1.9,
            "upperEnergyPercent": 5.8,
            "attackMs": 173.2
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/oboe.png",
      "referenceSpectrum": "../timbre-atlas/oboe-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "english-horn",
      "name": "english horn",
      "family": "english-horn",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-english-horn-1.0.0.mp3",
          "settingsSha256": "133bfd317a820e620ad23251226bfefa436184eef6d41a3ae8da63a197751cb2",
          "image": "history-english-horn-1.0.0.png",
          "sha256": "7dea01ff8d37a8a85129034aa2ea6fd322272a3d22694f59b5d30a4b35c9dfa3"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-english-horn-1.1.0.mp3",
          "settingsSha256": "0a7c3e38cf8494891afbb94e9f455654a9b9ffdd62e92cd2e47693239c3568ae",
          "image": "history-english-horn-1.1.0.png",
          "sha256": "eac4b65615231019ccdc51ca1d87933336112fc70f5f6747524cef3ab261fe5e"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-english-horn-1.2.1.mp3",
          "settingsSha256": "9804a13f3096460e3dc1c2865ae783feb891cb42f695d7096b22cf78d7b7d6d4",
          "image": "history-english-horn-1.2.1.png",
          "sha256": "71cc890ca5e97b437fe8b2dc7c5880454d149f8d32f7f966fd0524a2995b7966"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-english-horn-1.3.0.mp3",
          "settingsSha256": "9804a13f3096460e3dc1c2865ae783feb891cb42f695d7096b22cf78d7b7d6d4",
          "unchangedFrom": "1.2.1",
          "image": "history-english-horn-1.3.0.png",
          "sha256": "71cc890ca5e97b437fe8b2dc7c5880454d149f8d32f7f966fd0524a2995b7966"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-english-horn-1.4.0.mp3",
          "settingsSha256": "9804a13f3096460e3dc1c2865ae783feb891cb42f695d7096b22cf78d7b7d6d4",
          "unchangedFrom": "1.3.0",
          "image": "history-english-horn-1.4.0.png",
          "sha256": "71cc890ca5e97b437fe8b2dc7c5880454d149f8d32f7f966fd0524a2995b7966"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-english-horn-3.5.0.mp3",
          "settingsSha256": "9804a13f3096460e3dc1c2865ae783feb891cb42f695d7096b22cf78d7b7d6d4",
          "unchangedFrom": "1.4.0",
          "image": "history-english-horn-3.5.0.png",
          "sha256": "71cc890ca5e97b437fe8b2dc7c5880454d149f8d32f7f966fd0524a2995b7966"
        }
      ],
      "references": [
        {
          "archive": "cor anglais.zip",
          "member": "english-horn_C4_1_mezzo-forte_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C4",
          "label": "C4 / 1 / mezzo-forte / normal",
          "sha256": "5c2b25eea09a5420a440d37d535a6ead1e4646cfffb12d51840e6676f37904ec",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.016995307736579427,
            "centroidHz": 664.4,
            "centroidVariationPercent": 19.1,
            "upperEnergyPercent": 5.34,
            "attackMs": 53.3
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "cor anglais.zip",
          "member": "english-horn_C4_1_forte_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C4",
          "label": "C4 / 1 / forte / normal",
          "sha256": "1fb18319b21a99ed6fe7ef2da3be87f6b2526f5cb959bf89ffcb62ac8c8a7ded",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.028136940241634465,
            "centroidHz": 810.1,
            "centroidVariationPercent": 15,
            "upperEnergyPercent": 7.71,
            "attackMs": 52.4
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "cor anglais.zip",
          "member": "english-horn_C4_1_fortissimo_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C4",
          "label": "C4 / 1 / fortissimo / normal",
          "sha256": "2310641d0b35e56c01ffade7d852c55dbe70243f1ad61053fc30e26d7798284f",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.028559776410298443,
            "centroidHz": 864.7,
            "centroidVariationPercent": 23.8,
            "upperEnergyPercent": 14.32,
            "attackMs": 47.6
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/english-horn.png",
      "referenceSpectrum": "../timbre-atlas/english-horn-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "bassoon",
      "name": "bassoon",
      "family": "bassoon",
      "baseMidi": 48,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-bassoon-1.0.0.mp3",
          "settingsSha256": "ecb5b5021eb155e625dce638ef428a6e375726292a2045196175c50a07e2a632",
          "image": "history-bassoon-1.0.0.png",
          "sha256": "17ca8e1fb668b1b8b27e8d4b1379550db171a8d914b590d5f413ff2f0eee0c2b"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-bassoon-1.1.0.mp3",
          "settingsSha256": "0d8ae05599f7fbd7d68126545748f91f4a9beab12092407c0dfa896038c0706c",
          "image": "history-bassoon-1.1.0.png",
          "sha256": "1e1611a8b711e49050ea0f3d9be6c8edc0ad08a757f80d4c3a2932d93d507bba"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-bassoon-1.2.1.mp3",
          "settingsSha256": "a099eb3f6619ab60811908d2088dbf96a4506a4d65cf99b4afe8d5c679f1e370",
          "image": "history-bassoon-1.2.1.png",
          "sha256": "fa19797aa92cebb62d6f7c8bd300afd160551a795813fbadf47b1675e8f07446"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-bassoon-1.3.0.mp3",
          "settingsSha256": "a099eb3f6619ab60811908d2088dbf96a4506a4d65cf99b4afe8d5c679f1e370",
          "unchangedFrom": "1.2.1",
          "image": "history-bassoon-1.3.0.png",
          "sha256": "fa19797aa92cebb62d6f7c8bd300afd160551a795813fbadf47b1675e8f07446"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-bassoon-1.4.0.mp3",
          "settingsSha256": "a099eb3f6619ab60811908d2088dbf96a4506a4d65cf99b4afe8d5c679f1e370",
          "unchangedFrom": "1.3.0",
          "image": "history-bassoon-1.4.0.png",
          "sha256": "fa19797aa92cebb62d6f7c8bd300afd160551a795813fbadf47b1675e8f07446"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-bassoon-3.5.0.mp3",
          "settingsSha256": "a099eb3f6619ab60811908d2088dbf96a4506a4d65cf99b4afe8d5c679f1e370",
          "unchangedFrom": "1.4.0",
          "image": "history-bassoon-3.5.0.png",
          "sha256": "fa19797aa92cebb62d6f7c8bd300afd160551a795813fbadf47b1675e8f07446"
        }
      ],
      "references": [
        {
          "archive": "bassoon.zip",
          "member": "bassoon_C3_1_piano_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C3",
          "label": "C3 / 1 / piano / normal",
          "sha256": "38f0e30c1b05a603f80ab85e2e52b1ab5548383fa7c83b7f0ab912979a23824c",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 48,
          "features": {
            "rms": 0.03711082570218945,
            "centroidHz": 388.1,
            "centroidVariationPercent": 1.2,
            "upperEnergyPercent": 0,
            "attackMs": 58.8
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "bassoon.zip",
          "member": "bassoon_C3_05_mezzo-forte_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C3",
          "label": "C3 / 05 / mezzo-forte / normal",
          "sha256": "8d7691bbabd927c97a43b810753b2ca2dc09b377b656db6326bc3da4af757d83",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 48,
          "features": {
            "rms": 0.05861522759270376,
            "centroidHz": 526.2,
            "centroidVariationPercent": 28.4,
            "upperEnergyPercent": 0.04,
            "attackMs": 63.7
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "bassoon.zip",
          "member": "bassoon_C3_1_forte_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C3",
          "label": "C3 / 1 / forte / normal",
          "sha256": "8d8fbc4d6d9bf4bc8fb7fe0ffbd9fcbe2396cf9f658122dac94ea77284b324f7",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 48,
          "features": {
            "rms": 0.06542432112650556,
            "centroidHz": 542.3,
            "centroidVariationPercent": 1.7,
            "upperEnergyPercent": 0.06,
            "attackMs": 52.5
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/bassoon.png",
      "referenceSpectrum": "../timbre-atlas/bassoon-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "clarinet",
      "name": "clarinet",
      "family": "clarinet",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-clarinet-1.0.0.mp3",
          "settingsSha256": "843235975ad593ee12cbda2bda23b5dc9301358c61e052e5a4581bf505ee6c87",
          "image": "history-clarinet-1.0.0.png",
          "sha256": "32037b26c06442163b8d2ee5e4a284a763a1852006cb5a478bcd1750c5edd6ca"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-clarinet-1.1.0.mp3",
          "settingsSha256": "c8485b4342ffa8832a3a8f8a0cc9ec987110a953880a4d6c4877d27730569219",
          "image": "history-clarinet-1.1.0.png",
          "sha256": "8544277ac12f534002cfea2c29708828a4b1f6b7e5d42b678f939921a2ce4263"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-clarinet-1.2.1.mp3",
          "settingsSha256": "c6b67ae98795c62595c5432281de3c78d7a3424c4801e62c26492a28556b1a4b",
          "image": "history-clarinet-1.2.1.png",
          "sha256": "f50fbfab689642a5b3344f32ed28547f58c0114979dccc501df7546e3c5d1211"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "First measured harmonic-envelope sources; frozen release renderer.",
          "audio": "history-clarinet-1.3.0.mp3",
          "settingsSha256": "b94a5aff4ad55ae219542c20331c048a4f82dfbe59e25bb3bf6733324ad7e323",
          "image": "history-clarinet-1.3.0.png",
          "sha256": "05fce9de9de723e341ada3f7455a8684636eb7e0330d311a6cb8d3f936afb606"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Measured onset contours, sixteen harmonic frames and eight residual-noise bands.",
          "audio": "history-clarinet-1.4.0.mp3",
          "settingsSha256": "b94a5aff4ad55ae219542c20331c048a4f82dfbe59e25bb3bf6733324ad7e323",
          "image": "history-clarinet-1.4.0.png",
          "sha256": "a6684347b52dadee6d013676b9fafb034d9812a14e3060dd896c6a1c93a59529"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-clarinet-3.5.0.mp3",
          "settingsSha256": "b94a5aff4ad55ae219542c20331c048a4f82dfbe59e25bb3bf6733324ad7e323",
          "unchangedFrom": "1.4.0",
          "image": "history-clarinet-3.5.0.png",
          "sha256": "a6684347b52dadee6d013676b9fafb034d9812a14e3060dd896c6a1c93a59529"
        }
      ],
      "references": [
        {
          "archive": "clarinet.zip",
          "member": "clarinet_C4_1_piano_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C4",
          "label": "C4 / 1 / piano / normal",
          "sha256": "bac7986f3498479d11df5351de83f545026a64a99b9dd687b6d287fc09c31b9c",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.052285339984103216,
            "centroidHz": 353.7,
            "centroidVariationPercent": 2.5,
            "upperEnergyPercent": 0.03,
            "attackMs": 88.6
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "clarinet.zip",
          "member": "clarinet_C4_1_forte_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C4",
          "label": "C4 / 1 / forte / normal",
          "sha256": "3e56b81866c767fdced7b8494913b65ca8f903d49f798de7b9f1fcd4d6c06772",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.04726247890932464,
            "centroidHz": 574.9,
            "centroidVariationPercent": 2.5,
            "upperEnergyPercent": 2.18,
            "attackMs": 84.2
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "clarinet.zip",
          "member": "clarinet_C4_1_fortissimo_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C4",
          "label": "C4 / 1 / fortissimo / normal",
          "sha256": "62e3177830cfa0f1aa146a2bfcebb52dfcd07d17aa9ff032006f22da3aac3ea5",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.04535864218865106,
            "centroidHz": 764.7,
            "centroidVariationPercent": 3.3,
            "upperEnergyPercent": 5.43,
            "attackMs": 72.9
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/clarinet.png",
      "referenceSpectrum": "../timbre-atlas/clarinet-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "harmonica",
      "name": "harmonica",
      "family": "harmonica",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-harmonica-1.0.0.mp3",
          "settingsSha256": "48645e26844f86c39642fa0ddc2e229075eea92123e159bc25328c2426db5d1b",
          "image": "history-harmonica-1.0.0.png",
          "sha256": "dabce8cad671d68118afe8f81c3f60dc6d7274a609cb8f6c666ebd82dbff1847"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-harmonica-1.1.0.mp3",
          "settingsSha256": "9284af9c6de8e2959d7e2909dcc3b7ca322ca7fb40326d2bb4d1264d1ac49f76",
          "image": "history-harmonica-1.1.0.png",
          "sha256": "fda85f1a772ce766396d6b61671ce486aa4987c93e1f4f5b3ff7ed2b8eefca3e"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-harmonica-1.2.1.mp3",
          "settingsSha256": "9284af9c6de8e2959d7e2909dcc3b7ca322ca7fb40326d2bb4d1264d1ac49f76",
          "unchangedFrom": "1.1.0",
          "image": "history-harmonica-1.2.1.png",
          "sha256": "fda85f1a772ce766396d6b61671ce486aa4987c93e1f4f5b3ff7ed2b8eefca3e"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-harmonica-1.3.0.mp3",
          "settingsSha256": "9284af9c6de8e2959d7e2909dcc3b7ca322ca7fb40326d2bb4d1264d1ac49f76",
          "unchangedFrom": "1.2.1",
          "image": "history-harmonica-1.3.0.png",
          "sha256": "fda85f1a772ce766396d6b61671ce486aa4987c93e1f4f5b3ff7ed2b8eefca3e"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-harmonica-1.4.0.mp3",
          "settingsSha256": "9284af9c6de8e2959d7e2909dcc3b7ca322ca7fb40326d2bb4d1264d1ac49f76",
          "unchangedFrom": "1.3.0",
          "image": "history-harmonica-1.4.0.png",
          "sha256": "fda85f1a772ce766396d6b61671ce486aa4987c93e1f4f5b3ff7ed2b8eefca3e"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-harmonica-3.5.0.mp3",
          "settingsSha256": "9284af9c6de8e2959d7e2909dcc3b7ca322ca7fb40326d2bb4d1264d1ac49f76",
          "unchangedFrom": "1.4.0",
          "image": "history-harmonica-3.5.0.png",
          "sha256": "fda85f1a772ce766396d6b61671ce486aa4987c93e1f4f5b3ff7ed2b8eefca3e"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Aerophones/Free%20Aerophones/Harmonica-Hohner-Special20-C/Sustains/Normal/Hohner-Special20_Normal_C4.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Aerophones/Free%20Aerophones/Harmonica-Hohner-Special20-C/Sustains/Normal/Hohner-Special20_Normal_C4.wav",
          "license": "CC0",
          "label": "Hohner-Special20_Normal_C4",
          "note": "C4",
          "sha256": "ffb181bf9db1e30eb1b4824a9e923c6c81bd0c411143996639fe829131a47744",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.06304242081191291,
            "centroidHz": 3247.4,
            "centroidVariationPercent": 4.2,
            "upperEnergyPercent": 69.84,
            "attackMs": 176.1
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Aerophones/Free%20Aerophones/Harmonica-Hohner-Special20-C/Sustains/Soft/Hohner-Special20_Soft_C4.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Aerophones/Free%20Aerophones/Harmonica-Hohner-Special20-C/Sustains/Soft/Hohner-Special20_Soft_C4.wav",
          "license": "CC0",
          "label": "Hohner-Special20_Soft_C4",
          "note": "C4",
          "sha256": "6512cb328be4e85ad3dd2977e62b14a19d051845533eb7e9ecac12ddfd1a28e1",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.03231090363777285,
            "centroidHz": 2559.9,
            "centroidVariationPercent": 15.1,
            "upperEnergyPercent": 49.77,
            "attackMs": 1646.9
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Aerophones/Free%20Aerophones/Harmonica-Hohner-Special20-C/Sustains/Vib/Hohner-Special20_Vib_C4.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Aerophones/Free%20Aerophones/Harmonica-Hohner-Special20-C/Sustains/Vib/Hohner-Special20_Vib_C4.wav",
          "license": "CC0",
          "label": "Hohner-Special20_Vib_C4",
          "note": "C4",
          "sha256": "3279d2f3e046f3b5ac8545efcffff2b0942e9b2678e2408fc0f5637786bce015",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.07977496754799535,
            "centroidHz": 3108.1,
            "centroidVariationPercent": 3.9,
            "upperEnergyPercent": 56.32,
            "attackMs": 1382.6
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/harmonica.png",
      "referenceSpectrum": "../timbre-atlas/harmonica-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "flute",
      "name": "flute",
      "family": "flute",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-flute-1.0.0.mp3",
          "settingsSha256": "72f2470a01af4843690a8117ee43689626744f799e9f486da41d1ba1535cd3b2",
          "image": "history-flute-1.0.0.png",
          "sha256": "fef2b3434417d5a666beeac95ca4eead9ebf895f4e58d4f3eb7b09b457dfe43e"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-flute-1.1.0.mp3",
          "settingsSha256": "583a0dd10f00519deef9fae5fcf96fd492bced10bb34965aba49671f3f760915",
          "image": "history-flute-1.1.0.png",
          "sha256": "eafec0b524b81ddd8f906268b0009ebb53be5e296c9d72d38a7964adc0501613"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-flute-1.2.1.mp3",
          "settingsSha256": "93323e4a212123176a8c4a99223a685fb1d093793b193ea393d4a9f4d5f75895",
          "image": "history-flute-1.2.1.png",
          "sha256": "f088da27571b7c3f50605ed8202a2d4a0273ba87640fa78bde7095ae864b2819"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "First measured harmonic-envelope sources; frozen release renderer.",
          "audio": "history-flute-1.3.0.mp3",
          "settingsSha256": "d8c7b81765dc1cd5d26bee6d0e4b4d720465321ced24a7602880b31da2f4c97d",
          "image": "history-flute-1.3.0.png",
          "sha256": "02bca6667831a29e7aaa9a345d880125884e51911a5d25f74e5310d8244257d5"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Measured onset contours, sixteen harmonic frames and eight residual-noise bands.",
          "audio": "history-flute-1.4.0.mp3",
          "settingsSha256": "d8c7b81765dc1cd5d26bee6d0e4b4d720465321ced24a7602880b31da2f4c97d",
          "image": "history-flute-1.4.0.png",
          "sha256": "744c8a762c6053eeaaac888c244754a1a8822f9ffe3b48223c29e1d704a856a2"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-flute-3.5.0.mp3",
          "settingsSha256": "d8c7b81765dc1cd5d26bee6d0e4b4d720465321ced24a7602880b31da2f4c97d",
          "unchangedFrom": "1.4.0",
          "image": "history-flute-3.5.0.png",
          "sha256": "744c8a762c6053eeaaac888c244754a1a8822f9ffe3b48223c29e1d704a856a2"
        }
      ],
      "references": [
        {
          "archive": "flute.zip",
          "member": "flute_C5_1_piano_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C5",
          "label": "C5 / 1 / piano / normal",
          "sha256": "f7672533e312679111f841dff8fc2c82fdb3f9c5e3d66f5422e15b25e1ce7b99",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.011510124916612791,
            "centroidHz": 568.6,
            "centroidVariationPercent": 6.9,
            "upperEnergyPercent": 0.19,
            "attackMs": 519.6
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "flute.zip",
          "member": "flute_C5_1_mezzo-forte_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C5",
          "label": "C5 / 1 / mezzo-forte / normal",
          "sha256": "78f0ee16fd81a6f4824d356dd5e50f92b335828877fa94e8940f24eb27b6156c",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.011852680776562785,
            "centroidHz": 679.3,
            "centroidVariationPercent": 14.2,
            "upperEnergyPercent": 1.22,
            "attackMs": 514.6
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "flute.zip",
          "member": "flute_C5_1_forte_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C5",
          "label": "C5 / 1 / forte / normal",
          "sha256": "65cb9a2a9948af0f00683b88d45f991a0f1bab6db5ddb6f5920e31610869823e",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.013218214152669409,
            "centroidHz": 1116.6,
            "centroidVariationPercent": 21.5,
            "upperEnergyPercent": 4.95,
            "attackMs": 145.4
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/flute.png",
      "referenceSpectrum": "../timbre-atlas/flute-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "recorder",
      "name": "recorder",
      "family": "recorder",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-recorder-1.0.0.mp3",
          "settingsSha256": "60ede443b9633b58e5ec293f5a60e4bde5a2eb552ee15df57eab263d15a6f9e2",
          "image": "history-recorder-1.0.0.png",
          "sha256": "fa4986944e885095097cf7fcd5e827e249a43e2254da31a6334abb9c0584a27e"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-recorder-1.1.0.mp3",
          "settingsSha256": "9b21eb0ae040a6c57e2feb0385dfb58c662340e6ff2a3d6590259671268aeda7",
          "image": "history-recorder-1.1.0.png",
          "sha256": "1400aa511e1709339925d42e21025cbe46b84f78cc8767c5f3364c7d1bd45bc0"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-recorder-1.2.1.mp3",
          "settingsSha256": "408aec353c73b56c7d1767bf2b1a1f529b4c8107b6471512525f403c2bc09c71",
          "image": "history-recorder-1.2.1.png",
          "sha256": "242da715035af51a9bb8a2cdccfe6dc8a4837f10ee4009b56a0fcf4d416d01b9"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-recorder-1.3.0.mp3",
          "settingsSha256": "408aec353c73b56c7d1767bf2b1a1f529b4c8107b6471512525f403c2bc09c71",
          "unchangedFrom": "1.2.1",
          "image": "history-recorder-1.3.0.png",
          "sha256": "242da715035af51a9bb8a2cdccfe6dc8a4837f10ee4009b56a0fcf4d416d01b9"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-recorder-1.4.0.mp3",
          "settingsSha256": "408aec353c73b56c7d1767bf2b1a1f529b4c8107b6471512525f403c2bc09c71",
          "unchangedFrom": "1.3.0",
          "image": "history-recorder-1.4.0.png",
          "sha256": "242da715035af51a9bb8a2cdccfe6dc8a4837f10ee4009b56a0fcf4d416d01b9"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-recorder-3.5.0.mp3",
          "settingsSha256": "408aec353c73b56c7d1767bf2b1a1f529b4c8107b6471512525f403c2bc09c71",
          "unchangedFrom": "1.4.0",
          "image": "history-recorder-3.5.0.png",
          "sha256": "242da715035af51a9bb8a2cdccfe6dc8a4837f10ee4009b56a0fcf4d416d01b9"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Aerophones/Edge-blown%20Aerophones/Baroque%20Alto%20Recorder/Staccato/AltRecorder_Stac_C4_rr1_Main.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Aerophones/Edge-blown%20Aerophones/Baroque%20Alto%20Recorder/Staccato/AltRecorder_Stac_C4_rr1_Main.wav",
          "license": "CC0",
          "label": "AltRecorder_Stac_C4_rr1_Main",
          "note": "C4",
          "sha256": "34c08414dc6f02eb37f97fbbaf9be1a92c27643ccf51ba20c8eabe8cd1357625",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.016655551896790254,
            "centroidHz": 568.2,
            "centroidVariationPercent": 8,
            "upperEnergyPercent": 1.05,
            "attackMs": 63.2
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Aerophones/Edge-blown%20Aerophones/Baroque%20Alto%20Recorder/SusVib/AltRecorder_SusVib_C4_rr1_Main.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Aerophones/Edge-blown%20Aerophones/Baroque%20Alto%20Recorder/SusVib/AltRecorder_SusVib_C4_rr1_Main.wav",
          "license": "CC0",
          "label": "AltRecorder_SusVib_C4_rr1_Main",
          "note": "C4",
          "sha256": "07acc029e2d6969336c41144b5c0bb264c74b48e1dd8abbe300feef624ebfd56",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.030580133680414477,
            "centroidHz": 550.2,
            "centroidVariationPercent": 3.1,
            "upperEnergyPercent": 0.35,
            "attackMs": 446.9
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Aerophones/Edge-blown%20Aerophones/Baroque%20Alto%20Recorder/Sustain/AltRecorder_Sus_C4_rr1_Main.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Aerophones/Edge-blown%20Aerophones/Baroque%20Alto%20Recorder/Sustain/AltRecorder_Sus_C4_rr1_Main.wav",
          "license": "CC0",
          "label": "AltRecorder_Sus_C4_rr1_Main",
          "note": "C4",
          "sha256": "aaa4f42f850758a034db08cd42641f85adcb30a99db2fe790db03325c7f78b29",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.027988414867879036,
            "centroidHz": 531.4,
            "centroidVariationPercent": 0.5,
            "upperEnergyPercent": 0.28,
            "attackMs": 320
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/recorder.png",
      "referenceSpectrum": "../timbre-atlas/recorder-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "whistle",
      "name": "whistle",
      "family": "whistle",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-whistle-1.0.0.mp3",
          "settingsSha256": "81b925f20a9d5e7a508c1311c720679e6c35466deea8c9dd64a324170585ca18",
          "image": "history-whistle-1.0.0.png",
          "sha256": "6b3a622c68a433bc1ed134285d2528e8a35a7bfa125a21a550776d37cf4c74a5"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-whistle-1.1.0.mp3",
          "settingsSha256": "3b8e322286b4e791979121f774a5a835eb224e98de321659c7f9e6b79df73436",
          "image": "history-whistle-1.1.0.png",
          "sha256": "15de6b819929124cfd3ee0cc624d0add129d17ecb5e68295fe89f2f47cc598a3"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-whistle-1.2.1.mp3",
          "settingsSha256": "b5ca9a3ac326b6b7d5c1da16fa4d04af1bf2c438f15817b37dbad01b3b40d698",
          "image": "history-whistle-1.2.1.png",
          "sha256": "ab94a31eba0be3c2b6266eb33eb0fa208af007e9ebb8bda9f1ff4a19340da4d4"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-whistle-1.3.0.mp3",
          "settingsSha256": "b5ca9a3ac326b6b7d5c1da16fa4d04af1bf2c438f15817b37dbad01b3b40d698",
          "unchangedFrom": "1.2.1",
          "image": "history-whistle-1.3.0.png",
          "sha256": "ab94a31eba0be3c2b6266eb33eb0fa208af007e9ebb8bda9f1ff4a19340da4d4"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-whistle-1.4.0.mp3",
          "settingsSha256": "b5ca9a3ac326b6b7d5c1da16fa4d04af1bf2c438f15817b37dbad01b3b40d698",
          "unchangedFrom": "1.3.0",
          "image": "history-whistle-1.4.0.png",
          "sha256": "ab94a31eba0be3c2b6266eb33eb0fa208af007e9ebb8bda9f1ff4a19340da4d4"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-whistle-3.5.0.mp3",
          "settingsSha256": "b5ca9a3ac326b6b7d5c1da16fa4d04af1bf2c438f15817b37dbad01b3b40d698",
          "unchangedFrom": "1.4.0",
          "image": "history-whistle-3.5.0.png",
          "sha256": "ab94a31eba0be3c2b6266eb33eb0fa208af007e9ebb8bda9f1ff4a19340da4d4"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Aerophones/Edge-blown%20Aerophones/Ball%20Whistle/Main_BallWhistle_Long-001.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Aerophones/Edge-blown%20Aerophones/Ball%20Whistle/Main_BallWhistle_Long-001.wav",
          "license": "CC0",
          "label": "Main_BallWhistle_Long-001",
          "note": null,
          "sha256": "4155f8bf5ca8794708678decfa2b97ec70da757f1a214145ee5f312715ffdbf1",
          "noteOffset": 12,
          "inharmonic": true,
          "start": 0,
          "measuredMidi": null,
          "features": {
            "rms": 0.028102188627824338,
            "centroidHz": 2671.2,
            "centroidVariationPercent": 1.4,
            "upperEnergyPercent": 99.66,
            "attackMs": 300.1
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Aerophones/Edge-blown%20Aerophones/Ball%20Whistle/Main_BallWhistle_Short-001.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Aerophones/Edge-blown%20Aerophones/Ball%20Whistle/Main_BallWhistle_Short-001.wav",
          "license": "CC0",
          "label": "Main_BallWhistle_Short-001",
          "note": null,
          "sha256": "d96cf1504f09d12443a3ab3d94c0e8485d22f2447438f8d2aaa6e887087af8bb",
          "noteOffset": 12,
          "inharmonic": true,
          "start": 0,
          "measuredMidi": null,
          "features": {
            "rms": 0.015936627479644628,
            "centroidHz": 2455.9,
            "centroidVariationPercent": 129.3,
            "upperEnergyPercent": 90.68,
            "attackMs": 81.7
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/whistle.png",
      "referenceSpectrum": "../timbre-atlas/whistle-spectrum.png",
      "coverage": "related",
      "contextual": false
    },
    {
      "id": "ocarina",
      "name": "ocarina",
      "family": "ocarina",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-ocarina-1.0.0.mp3",
          "settingsSha256": "a324ff0c483d823099dcae81971e87d0cf1c16ebbfb6fcf49e0bcb8588f2e38c",
          "image": "history-ocarina-1.0.0.png",
          "sha256": "86d63291671b7247a65528b8740a109f676c4a399ba88ced5903c6558ce52d47"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-ocarina-1.1.0.mp3",
          "settingsSha256": "87f0573a4749411f3e2e1497a7651a4ac2e12115e076994463ce98da42a44c1c",
          "image": "history-ocarina-1.1.0.png",
          "sha256": "f1ed9f934c4998f4cf4342f71dbf38e52c7c2340c15bd45ee72ce80b026c9c08"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-ocarina-1.2.1.mp3",
          "settingsSha256": "2b331b969b52db2298bca2f0d35fea0dc4b451371924280d56ca4d6558737384",
          "image": "history-ocarina-1.2.1.png",
          "sha256": "d56089d7812a29711c3aee5a94a046127bdaf510c4f7e7f665c0efb8ef3dd7f6"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-ocarina-1.3.0.mp3",
          "settingsSha256": "2b331b969b52db2298bca2f0d35fea0dc4b451371924280d56ca4d6558737384",
          "unchangedFrom": "1.2.1",
          "image": "history-ocarina-1.3.0.png",
          "sha256": "d56089d7812a29711c3aee5a94a046127bdaf510c4f7e7f665c0efb8ef3dd7f6"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-ocarina-1.4.0.mp3",
          "settingsSha256": "2b331b969b52db2298bca2f0d35fea0dc4b451371924280d56ca4d6558737384",
          "unchangedFrom": "1.3.0",
          "image": "history-ocarina-1.4.0.png",
          "sha256": "d56089d7812a29711c3aee5a94a046127bdaf510c4f7e7f665c0efb8ef3dd7f6"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-ocarina-3.5.0.mp3",
          "settingsSha256": "2b331b969b52db2298bca2f0d35fea0dc4b451371924280d56ca4d6558737384",
          "unchangedFrom": "1.4.0",
          "image": "history-ocarina-3.5.0.png",
          "sha256": "d56089d7812a29711c3aee5a94a046127bdaf510c4f7e7f665c0efb8ef3dd7f6"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Aerophones/Edge-blown%20Aerophones/Ocarina%2C%20Typical/Sustains/SusVib/StdOcarina_SusVib_C4.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Aerophones/Edge-blown%20Aerophones/Ocarina%2C%20Typical/Sustains/SusVib/StdOcarina_SusVib_C4.wav",
          "license": "CC0",
          "label": "StdOcarina_SusVib_C4",
          "note": "C4",
          "sha256": "c21a47a237a978b1fd556ec78b42ab9851ac3b9e7ebff417cca52426c4c48d61",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.17289171965911418,
            "centroidHz": 527.8,
            "centroidVariationPercent": 0.6,
            "upperEnergyPercent": 0.01,
            "attackMs": 914.4
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Aerophones/Edge-blown%20Aerophones/Ocarina%2C%20Typical/Sustains/Sus/StdOcarina_Sus_A%234.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Aerophones/Edge-blown%20Aerophones/Ocarina%2C%20Typical/Sustains/Sus/StdOcarina_Sus_A%234.wav",
          "license": "CC0",
          "label": "StdOcarina_Sus_A#4",
          "note": "A#4",
          "sha256": "6a8ce3117f55d5fe2755f9e0e72622a141218818e97b9f66e3c603fb135f7684",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 82,
          "features": {
            "rms": 0.22413665542968564,
            "centroidHz": 936.8,
            "centroidVariationPercent": 0.1,
            "upperEnergyPercent": 0.01,
            "attackMs": 890.3
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Aerophones/Edge-blown%20Aerophones/Ocarina%2C%20Typical/Sustains/Sus/StdOcarina_Sus_A3.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Aerophones/Edge-blown%20Aerophones/Ocarina%2C%20Typical/Sustains/Sus/StdOcarina_Sus_A3.wav",
          "license": "CC0",
          "label": "StdOcarina_Sus_A3",
          "note": "A3",
          "sha256": "983184cc710f3b82deb225664994031c107c0e841cf404f7085e4a0b72374b4b",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 69,
          "features": {
            "rms": 0.10264979680527449,
            "centroidHz": 440.7,
            "centroidVariationPercent": 0.2,
            "upperEnergyPercent": 0,
            "attackMs": 17.4
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/ocarina.png",
      "referenceSpectrum": "../timbre-atlas/ocarina-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "piccolo",
      "name": "piccolo",
      "family": "piccolo",
      "baseMidi": 72,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-piccolo-1.0.0.mp3",
          "settingsSha256": "6f6edb4271bc73b5166efb3d1f37e7fba6d6b02c808bd95bdb0efcfcb1bf8739",
          "image": "history-piccolo-1.0.0.png",
          "sha256": "82ce18ccf082812256ef92191d5f3621489e6cd855711dc63bb9ca84f50ea371"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-piccolo-1.1.0.mp3",
          "settingsSha256": "ac1c94d922a3c0b92e6ac94e00f2d8f7de75db7f29e5a83504d057da02c62317",
          "image": "history-piccolo-1.1.0.png",
          "sha256": "9aa9345205bc573b9bb792aeb9c80602190f869b80e0041aa84a8b76d2251686"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-piccolo-1.2.1.mp3",
          "settingsSha256": "78023a1e06724f3a0fcce68a01e26464ab8296e9c143c5f629588983f4cc30e3",
          "image": "history-piccolo-1.2.1.png",
          "sha256": "ab02e5ce6097f7ff76c0438eed6cf1eacc3ea1fd08c59228720b60a3bb6d17f3"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-piccolo-1.3.0.mp3",
          "settingsSha256": "78023a1e06724f3a0fcce68a01e26464ab8296e9c143c5f629588983f4cc30e3",
          "unchangedFrom": "1.2.1",
          "image": "history-piccolo-1.3.0.png",
          "sha256": "ab02e5ce6097f7ff76c0438eed6cf1eacc3ea1fd08c59228720b60a3bb6d17f3"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-piccolo-1.4.0.mp3",
          "settingsSha256": "78023a1e06724f3a0fcce68a01e26464ab8296e9c143c5f629588983f4cc30e3",
          "unchangedFrom": "1.3.0",
          "image": "history-piccolo-1.4.0.png",
          "sha256": "ab02e5ce6097f7ff76c0438eed6cf1eacc3ea1fd08c59228720b60a3bb6d17f3"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-piccolo-3.5.0.mp3",
          "settingsSha256": "78023a1e06724f3a0fcce68a01e26464ab8296e9c143c5f629588983f4cc30e3",
          "unchangedFrom": "1.4.0",
          "image": "history-piccolo-3.5.0.png",
          "sha256": "ab02e5ce6097f7ff76c0438eed6cf1eacc3ea1fd08c59228720b60a3bb6d17f3"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/sgossner/VSCO-2-CE/master/Woodwinds/Piccolo/Stac/piccolo_A%234_staccato1.wav",
          "source": "VSCO 2 Community Edition",
          "sourceUrl": "https://github.com/sgossner/VSCO-2-CE/blob/master/Woodwinds/Piccolo/Stac/piccolo_A%234_staccato1.wav",
          "license": "CC0",
          "label": "piccolo_A#4_staccato1",
          "note": "A#4",
          "sha256": "6ecb70160befbc7f388f8567372734398ead56c7f7f1b56f512c7e69774e7ede",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 82,
          "features": {
            "rms": 0.04742435302927413,
            "centroidHz": 1110.6,
            "centroidVariationPercent": 1.1,
            "upperEnergyPercent": 6.44,
            "attackMs": 45.8
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VSCO-2-CE/master/Woodwinds/Piccolo/Stac/piccolo_A%235_staccato1.wav",
          "source": "VSCO 2 Community Edition",
          "sourceUrl": "https://github.com/sgossner/VSCO-2-CE/blob/master/Woodwinds/Piccolo/Stac/piccolo_A%235_staccato1.wav",
          "license": "CC0",
          "label": "piccolo_A#5_staccato1",
          "note": "A#5",
          "sha256": "5fb29db9708695e664c9f802c650810710295322f8d991b432f0ed9add5638ca",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 94,
          "features": {
            "rms": 0.10920367678418869,
            "centroidHz": 1867,
            "centroidVariationPercent": 0.4,
            "upperEnergyPercent": 0.42,
            "attackMs": 33.3
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VSCO-2-CE/master/Woodwinds/Piccolo/Sus/piccolo_C5_sustain1.wav",
          "source": "VSCO 2 Community Edition",
          "sourceUrl": "https://github.com/sgossner/VSCO-2-CE/blob/master/Woodwinds/Piccolo/Sus/piccolo_C5_sustain1.wav",
          "license": "CC0",
          "label": "piccolo_C5_sustain1",
          "note": "C5",
          "noteOffset": 12,
          "sha256": "d3069f1cf627d1cf9715ea5564e26e0988d321a6e7c5d4ffe8ff5345ff78c09f",
          "start": 0,
          "measuredMidi": 84,
          "features": {
            "rms": 0.04457848466059426,
            "centroidHz": 1180.7,
            "centroidVariationPercent": 5.1,
            "upperEnergyPercent": 7.32,
            "attackMs": 1438.8
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/piccolo.png",
      "referenceSpectrum": "../timbre-atlas/piccolo-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "shakuhachi",
      "name": "shakuhachi",
      "family": "shakuhachi",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-shakuhachi-1.0.0.mp3",
          "settingsSha256": "0f33b9a5f5ba2860187fb51fdfa845cf2e545524a17d9ced81fab71a61dc9f05",
          "image": "history-shakuhachi-1.0.0.png",
          "sha256": "405405079351ee4de5bf6ae5998797377a9e28ef6795dae38b6657348996f5a3"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-shakuhachi-1.1.0.mp3",
          "settingsSha256": "a8befef249dd605826de3975159bbbc0d355dadd93ec68bcaded35157449a8fd",
          "image": "history-shakuhachi-1.1.0.png",
          "sha256": "c5dff5a04f65f41bbbe015bf3ad0ee33694b805c8a49bb1ca1475b2a00e8b290"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-shakuhachi-1.2.1.mp3",
          "settingsSha256": "1acaaeea917422f92947ed6928dfde064f1d8b8f1e5114ca72dec81819796686",
          "image": "history-shakuhachi-1.2.1.png",
          "sha256": "b6c74dff2cc5a81fb102860bb15b0cbf0f329f121103d2690f1f2590c6a3459b"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-shakuhachi-1.3.0.mp3",
          "settingsSha256": "1acaaeea917422f92947ed6928dfde064f1d8b8f1e5114ca72dec81819796686",
          "unchangedFrom": "1.2.1",
          "image": "history-shakuhachi-1.3.0.png",
          "sha256": "b6c74dff2cc5a81fb102860bb15b0cbf0f329f121103d2690f1f2590c6a3459b"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-shakuhachi-1.4.0.mp3",
          "settingsSha256": "1acaaeea917422f92947ed6928dfde064f1d8b8f1e5114ca72dec81819796686",
          "unchangedFrom": "1.3.0",
          "image": "history-shakuhachi-1.4.0.png",
          "sha256": "b6c74dff2cc5a81fb102860bb15b0cbf0f329f121103d2690f1f2590c6a3459b"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-shakuhachi-3.5.0.mp3",
          "settingsSha256": "1acaaeea917422f92947ed6928dfde064f1d8b8f1e5114ca72dec81819796686",
          "unchangedFrom": "1.4.0",
          "image": "history-shakuhachi-3.5.0.png",
          "sha256": "b6c74dff2cc5a81fb102860bb15b0cbf0f329f121103d2690f1f2590c6a3459b"
        }
      ],
      "references": [
        {
          "url": "https://upload.wikimedia.org/wikipedia/commons/0/05/Syakuhachi.ogg",
          "sourceUrl": "https://commons.wikimedia.org/wiki/File:Syakuhachi.ogg",
          "source": "kenekana",
          "license": "CC BY 3.0",
          "label": "Performance excerpt 1; recording method unspecified",
          "note": null,
          "contextual": true,
          "excerpt": 0,
          "sha256": "f769985290eab03f6ba7265d391fa8c8d07647738e3e39fc04214841549f343e",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": null,
          "features": {
            "rms": 0.19020488648888337,
            "centroidHz": 383.2,
            "centroidVariationPercent": 45.1,
            "upperEnergyPercent": 0.34,
            "attackMs": 1551
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://upload.wikimedia.org/wikipedia/commons/0/05/Syakuhachi.ogg",
          "sourceUrl": "https://commons.wikimedia.org/wiki/File:Syakuhachi.ogg",
          "source": "kenekana",
          "license": "CC BY 3.0",
          "label": "Performance excerpt 2; recording method unspecified",
          "note": null,
          "contextual": true,
          "excerpt": 1,
          "sha256": "f769985290eab03f6ba7265d391fa8c8d07647738e3e39fc04214841549f343e",
          "noteOffset": 0,
          "start": 3.462,
          "measuredMidi": null,
          "features": {
            "rms": 0.1682144600022857,
            "centroidHz": 482.5,
            "centroidVariationPercent": 11.4,
            "upperEnergyPercent": 0.18,
            "attackMs": 459.4
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://upload.wikimedia.org/wikipedia/commons/0/05/Syakuhachi.ogg",
          "sourceUrl": "https://commons.wikimedia.org/wiki/File:Syakuhachi.ogg",
          "source": "kenekana",
          "license": "CC BY 3.0",
          "label": "Performance excerpt 3; recording method unspecified",
          "note": null,
          "contextual": true,
          "excerpt": 2,
          "sha256": "f769985290eab03f6ba7265d391fa8c8d07647738e3e39fc04214841549f343e",
          "noteOffset": 0,
          "start": 6.924,
          "measuredMidi": null,
          "features": {
            "rms": 0.1053230252072999,
            "centroidHz": 750,
            "centroidVariationPercent": 5.9,
            "upperEnergyPercent": 0.27,
            "attackMs": 254.5
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/shakuhachi.png",
      "referenceSpectrum": "../timbre-atlas/shakuhachi-spectrum.png",
      "coverage": "instrument",
      "contextual": true
    },
    {
      "id": "pan-flute",
      "name": "pan flute",
      "family": "pan-flute",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-pan-flute-1.0.0.mp3",
          "settingsSha256": "17f1e35cbb552c8eb00bfe47980b39e6e17fe49c085cb57b9fce8b25e78508c1",
          "image": "history-pan-flute-1.0.0.png",
          "sha256": "c450803f11f188ea161985343cd1292679ce503fc034d7e8887dc889438aa41b"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-pan-flute-1.1.0.mp3",
          "settingsSha256": "b3fc7ddf33e82a7d3bf6f3436168e1269a83c5d15e56760489f263e2e4ca8798",
          "image": "history-pan-flute-1.1.0.png",
          "sha256": "1338369cf4bef6f80f885f9b385c738185cb59f4b667088636efa3eb9b29d1f6"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-pan-flute-1.2.1.mp3",
          "settingsSha256": "6dabfa1ba92285cd58bd985a5b7715c9c32f96778dd4ee36f420b365922951d8",
          "image": "history-pan-flute-1.2.1.png",
          "sha256": "8b90893dcd9da74e8a97913241c86f0672b26bfe46bfdcd0e6f8ea1ed7e270c4"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-pan-flute-1.3.0.mp3",
          "settingsSha256": "6dabfa1ba92285cd58bd985a5b7715c9c32f96778dd4ee36f420b365922951d8",
          "unchangedFrom": "1.2.1",
          "image": "history-pan-flute-1.3.0.png",
          "sha256": "8b90893dcd9da74e8a97913241c86f0672b26bfe46bfdcd0e6f8ea1ed7e270c4"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-pan-flute-1.4.0.mp3",
          "settingsSha256": "6dabfa1ba92285cd58bd985a5b7715c9c32f96778dd4ee36f420b365922951d8",
          "unchangedFrom": "1.3.0",
          "image": "history-pan-flute-1.4.0.png",
          "sha256": "8b90893dcd9da74e8a97913241c86f0672b26bfe46bfdcd0e6f8ea1ed7e270c4"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-pan-flute-3.5.0.mp3",
          "settingsSha256": "6dabfa1ba92285cd58bd985a5b7715c9c32f96778dd4ee36f420b365922951d8",
          "unchangedFrom": "1.4.0",
          "image": "history-pan-flute-3.5.0.png",
          "sha256": "8b90893dcd9da74e8a97913241c86f0672b26bfe46bfdcd0e6f8ea1ed7e270c4"
        }
      ],
      "references": [
        {
          "url": "https://cdn.freesound.org/previews/427/427080_8499836-hq.mp3",
          "sourceUrl": "https://freesound.org/people/PanPiper5/sounds/427080/",
          "source": "Freesound - Zanka Note D.wav by PanPiper5",
          "license": "CC0",
          "label": "Freesound - Zanka Note D.wav by PanPiper5; compressed preview",
          "note": "D3",
          "sha256": "70b32ae9d3f3b33c29b6ca349b4945a1913af35a609ca5ec620646b1196b7bb7",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 50,
          "features": {
            "rms": 0.24517534293190898,
            "centroidHz": 253.2,
            "centroidVariationPercent": 48.8,
            "upperEnergyPercent": 0.88,
            "attackMs": 477.7
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/pan-flute.png",
      "referenceSpectrum": "../timbre-atlas/pan-flute-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "blown-bottle",
      "name": "blown bottle",
      "family": "blown-bottle",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-blown-bottle-1.0.0.mp3",
          "settingsSha256": "c19a5aa61bbce445892335b040f1c50d843cfac5c231298849a3c3be41bd7991",
          "image": "history-blown-bottle-1.0.0.png",
          "sha256": "b276741a362369c68b503b80aa9e73667c2c2a2a7084dd5e4a40cbeb33229fd8"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-blown-bottle-1.1.0.mp3",
          "settingsSha256": "8663b16be723ee4f7d663c7323f8d2164f7e4100cf4e17b94f5f245c28969a1a",
          "image": "history-blown-bottle-1.1.0.png",
          "sha256": "f4cff7944b6a96dd6f61ffbe3648bd19e2718267518411097104d4110e548911"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-blown-bottle-1.2.1.mp3",
          "settingsSha256": "0063dbdb2991bb07bdef0bf8b933860458a0f6e339f2ea5c73ecbac8522c2e7f",
          "image": "history-blown-bottle-1.2.1.png",
          "sha256": "1ca187056b7774ae68791bf96f55eacadcbb4f694feb69a03e1c4a999a49dc4e"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-blown-bottle-1.3.0.mp3",
          "settingsSha256": "0063dbdb2991bb07bdef0bf8b933860458a0f6e339f2ea5c73ecbac8522c2e7f",
          "unchangedFrom": "1.2.1",
          "image": "history-blown-bottle-1.3.0.png",
          "sha256": "1ca187056b7774ae68791bf96f55eacadcbb4f694feb69a03e1c4a999a49dc4e"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-blown-bottle-1.4.0.mp3",
          "settingsSha256": "0063dbdb2991bb07bdef0bf8b933860458a0f6e339f2ea5c73ecbac8522c2e7f",
          "unchangedFrom": "1.3.0",
          "image": "history-blown-bottle-1.4.0.png",
          "sha256": "1ca187056b7774ae68791bf96f55eacadcbb4f694feb69a03e1c4a999a49dc4e"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-blown-bottle-3.5.0.mp3",
          "settingsSha256": "0063dbdb2991bb07bdef0bf8b933860458a0f6e339f2ea5c73ecbac8522c2e7f",
          "unchangedFrom": "1.4.0",
          "image": "history-blown-bottle-3.5.0.png",
          "sha256": "1ca187056b7774ae68791bf96f55eacadcbb4f694feb69a03e1c4a999a49dc4e"
        }
      ],
      "references": [
        {
          "url": "https://upload.wikimedia.org/wikipedia/commons/a/ac/Sounds_of_blown_bottle.ogg",
          "sourceUrl": "https://commons.wikimedia.org/wiki/File:Sounds_of_blown_bottle.ogg",
          "source": "mary905 / Wikimedia Commons",
          "license": "Public domain",
          "licenseUrl": "https://commons.wikimedia.org/wiki/File:Sounds_of_blown_bottle.ogg",
          "label": "blown-bottle performance excerpt 1 of 3 (same recording)",
          "note": null,
          "excerpt": 0,
          "contextual": true,
          "sha256": "78b2c473b197db0f55f684c81401eac4af6851017156e5696a91651f49e80246",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": null,
          "features": {
            "rms": 0.22917537035284466,
            "centroidHz": 381,
            "centroidVariationPercent": 0.2,
            "upperEnergyPercent": 0.02,
            "attackMs": 323
          },
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://upload.wikimedia.org/wikipedia/commons/a/ac/Sounds_of_blown_bottle.ogg",
          "sourceUrl": "https://commons.wikimedia.org/wiki/File:Sounds_of_blown_bottle.ogg",
          "source": "mary905 / Wikimedia Commons",
          "license": "Public domain",
          "licenseUrl": "https://commons.wikimedia.org/wiki/File:Sounds_of_blown_bottle.ogg",
          "label": "blown-bottle performance excerpt 2 of 3 (same recording)",
          "note": null,
          "excerpt": 1,
          "contextual": true,
          "sha256": "78b2c473b197db0f55f684c81401eac4af6851017156e5696a91651f49e80246",
          "noteOffset": 0,
          "start": 3.189,
          "measuredMidi": null,
          "features": {
            "rms": 0.1673780595097404,
            "centroidHz": 306.3,
            "centroidVariationPercent": 0.4,
            "upperEnergyPercent": 0.01,
            "attackMs": 319
          },
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://upload.wikimedia.org/wikipedia/commons/a/ac/Sounds_of_blown_bottle.ogg",
          "sourceUrl": "https://commons.wikimedia.org/wiki/File:Sounds_of_blown_bottle.ogg",
          "source": "mary905 / Wikimedia Commons",
          "license": "Public domain",
          "licenseUrl": "https://commons.wikimedia.org/wiki/File:Sounds_of_blown_bottle.ogg",
          "label": "blown-bottle performance excerpt 3 of 3 (same recording)",
          "note": null,
          "excerpt": 2,
          "contextual": true,
          "sha256": "78b2c473b197db0f55f684c81401eac4af6851017156e5696a91651f49e80246",
          "noteOffset": 0,
          "start": 6.378,
          "measuredMidi": null,
          "features": {
            "rms": 0.2821191584565489,
            "centroidHz": 381,
            "centroidVariationPercent": 0.2,
            "upperEnergyPercent": 0.02,
            "attackMs": 312.7
          },
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/blown-bottle.png",
      "referenceSpectrum": "../timbre-atlas/blown-bottle-spectrum.png",
      "coverage": "instrument",
      "contextual": true
    },
    {
      "id": "steel-pan",
      "name": "steel pan",
      "family": "steel-pan",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-steel-pan-1.0.0.mp3",
          "settingsSha256": "c3e93523d6b74cf49a935e259824e044277d9e4f767dda02a814e95d80dd4ca7",
          "image": "history-steel-pan-1.0.0.png",
          "sha256": "61db4cd05b6496503543b5493de95cbe09ddaa6d8bac478fd8b1a5327422b92a"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-steel-pan-1.1.0.mp3",
          "settingsSha256": "e59b7bd01281503c9327d2acd043170409e12803cf4d335b5aaf8e6209a9e5c3",
          "image": "history-steel-pan-1.1.0.png",
          "sha256": "b9780ddd8a402d8f0f8f67b004c321b122965258f762ade4ad9fc065071703fc"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-steel-pan-1.2.1.mp3",
          "settingsSha256": "e59b7bd01281503c9327d2acd043170409e12803cf4d335b5aaf8e6209a9e5c3",
          "unchangedFrom": "1.1.0",
          "image": "history-steel-pan-1.2.1.png",
          "sha256": "b9780ddd8a402d8f0f8f67b004c321b122965258f762ade4ad9fc065071703fc"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-steel-pan-1.3.0.mp3",
          "settingsSha256": "e59b7bd01281503c9327d2acd043170409e12803cf4d335b5aaf8e6209a9e5c3",
          "unchangedFrom": "1.2.1",
          "image": "history-steel-pan-1.3.0.png",
          "sha256": "b9780ddd8a402d8f0f8f67b004c321b122965258f762ade4ad9fc065071703fc"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-steel-pan-1.4.0.mp3",
          "settingsSha256": "e59b7bd01281503c9327d2acd043170409e12803cf4d335b5aaf8e6209a9e5c3",
          "unchangedFrom": "1.3.0",
          "image": "history-steel-pan-1.4.0.png",
          "sha256": "b9780ddd8a402d8f0f8f67b004c321b122965258f762ade4ad9fc065071703fc"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-steel-pan-3.5.0.mp3",
          "settingsSha256": "e59b7bd01281503c9327d2acd043170409e12803cf4d335b5aaf8e6209a9e5c3",
          "unchangedFrom": "1.4.0",
          "image": "history-steel-pan-3.5.0.png",
          "sha256": "b9780ddd8a402d8f0f8f67b004c321b122965258f762ade4ad9fc065071703fc"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/sfzinstruments/jlearman.SteelDrum/main/flac/jsdb_060__C4_1-1.flac",
          "sourceUrl": "https://github.com/sfzinstruments/jlearman.SteelDrum",
          "source": "Jeff Learman / jSteelDrum",
          "license": "Unlicense",
          "label": "jsdb_060__C4_1-1.flac",
          "note": "C4",
          "sha256": "377f1eaf96a23e8214c5ffacad47fc816ddc0195ed0bb2f7a787f4ca6b4ac679",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.2945953663002748,
            "centroidHz": 267.4,
            "centroidVariationPercent": 2,
            "upperEnergyPercent": 0,
            "attackMs": 12.1
          },
          "licenseUrl": "https://github.com/sfzinstruments/jlearman.SteelDrum",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sfzinstruments/jlearman.SteelDrum/main/flac/jsdb_060__C4_2-1.flac",
          "sourceUrl": "https://github.com/sfzinstruments/jlearman.SteelDrum",
          "source": "Jeff Learman / jSteelDrum",
          "license": "Unlicense",
          "label": "jsdb_060__C4_2-1.flac",
          "note": "C4",
          "sha256": "c478e6225cf5d99d1ef57d98dc17fe9ff12dc6b452cd860dfb62fb95f3256e0e",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.2700446800727526,
            "centroidHz": 267.9,
            "centroidVariationPercent": 2.8,
            "upperEnergyPercent": 0.01,
            "attackMs": 11.7
          },
          "licenseUrl": "https://github.com/sfzinstruments/jlearman.SteelDrum",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sfzinstruments/jlearman.SteelDrum/main/flac/SteelDrum_060__C4_4-1.flac",
          "sourceUrl": "https://github.com/sfzinstruments/jlearman.SteelDrum",
          "source": "Jeff Learman / jSteelDrum",
          "license": "Unlicense",
          "label": "SteelDrum_060__C4_4-1.flac",
          "note": "C4",
          "sha256": "aec960dda087198c8288d34da6f0ddb5b68c4e811b4b7169a03620464228945d",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 60,
          "features": {
            "rms": 0.1950504793687094,
            "centroidHz": 420.3,
            "centroidVariationPercent": 6.5,
            "upperEnergyPercent": 4.52,
            "attackMs": 10.8
          },
          "licenseUrl": "https://github.com/sfzinstruments/jlearman.SteelDrum",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/steel-pan.png",
      "referenceSpectrum": "../timbre-atlas/steel-pan-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "timpani",
      "name": "timpani",
      "family": "timpani",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-timpani-1.0.0.mp3",
          "settingsSha256": "dc10157053bf6eaac6a2c7768446d71b6a17493d802f3a103f9e73f1dc2c2913",
          "image": "history-timpani-1.0.0.png",
          "sha256": "1c7a37f7949530e79c9611beebddb09cf9e1d75ff728dc843e70923c2f88f9c0"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-timpani-1.1.0.mp3",
          "settingsSha256": "8d8ae772251918a16761dc8d925d82a50dda7ea40209af82c7710537baa0a66c",
          "image": "history-timpani-1.1.0.png",
          "sha256": "ef3a9eb4328217cefb40e62da8b792b2903875f7959c3d545c1e7574d0cd4fbc"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-timpani-1.2.1.mp3",
          "settingsSha256": "8d8ae772251918a16761dc8d925d82a50dda7ea40209af82c7710537baa0a66c",
          "image": "history-timpani-1.2.1.png",
          "sha256": "c548b375289bc50e3080b475ba5d34becf2bfc3abf208fc4d90ca738956295ab"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-timpani-1.3.0.mp3",
          "settingsSha256": "8d8ae772251918a16761dc8d925d82a50dda7ea40209af82c7710537baa0a66c",
          "image": "history-timpani-1.3.0.png",
          "sha256": "2eb9a1f7d04303f1cd8d800608622fca1669c1d64e22e55bcadae3d840c690c7"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-timpani-1.4.0.mp3",
          "settingsSha256": "8d8ae772251918a16761dc8d925d82a50dda7ea40209af82c7710537baa0a66c",
          "image": "history-timpani-1.4.0.png",
          "sha256": "ff1200f04d230d5f261087470e4f9257a24412110e4557bfed443d9d718ef9b8"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-timpani-3.5.0.mp3",
          "settingsSha256": "8d8ae772251918a16761dc8d925d82a50dda7ea40209af82c7710537baa0a66c",
          "image": "history-timpani-3.5.0.png",
          "sha256": "be9613b699b429074822df62cf93412146ef61a846f68e2de2b92e2f6de7fb94"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Membranophones/Struck%20Membranophones/Timpani%201/Hit/Timpani1_Hit_v2_rr1_Sum.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Membranophones/Struck%20Membranophones/Timpani%201/Hit/Timpani1_Hit_v2_rr1_Sum.wav",
          "license": "CC0",
          "label": "Timpani1_Hit_v2_rr1_Sum",
          "note": null,
          "sha256": "cb04c9f4ab7f59442076f3cebe78696e38165abace51b0a99829ec03cc95a5f3",
          "noteOffset": 12,
          "inharmonic": true,
          "start": 0,
          "measuredMidi": null,
          "features": {
            "rms": 0.0016065159092634863,
            "centroidHz": 103.6,
            "centroidVariationPercent": 6,
            "upperEnergyPercent": 0,
            "attackMs": 17.2
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Membranophones/Struck%20Membranophones/Timpani%201/Hit/Timpani1_Hit_v3_rr3_Sum.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Membranophones/Struck%20Membranophones/Timpani%201/Hit/Timpani1_Hit_v3_rr3_Sum.wav",
          "license": "CC0",
          "label": "Timpani1_Hit_v3_rr3_Sum",
          "note": null,
          "sha256": "25455f78f6a4dbbc9b26dad2e1896a4707f87eab458a55334b66e85bf05d0556",
          "noteOffset": 12,
          "inharmonic": true,
          "start": 0,
          "measuredMidi": null,
          "features": {
            "rms": 0.008643811129418677,
            "centroidHz": 157.5,
            "centroidVariationPercent": 7.6,
            "upperEnergyPercent": 0,
            "attackMs": 27.8
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Membranophones/Struck%20Membranophones/Timpani%201/Hit/Timpani1_Hit_v4_rr1_Sum.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Membranophones/Struck%20Membranophones/Timpani%201/Hit/Timpani1_Hit_v4_rr1_Sum.wav",
          "license": "CC0",
          "label": "Timpani1_Hit_v4_rr1_Sum",
          "note": null,
          "sha256": "b51d81444425e1ba0c09d94dbdc384a8cd4b4681c42959cc8676ccaf6d6ea793",
          "noteOffset": 12,
          "inharmonic": true,
          "start": 0,
          "measuredMidi": null,
          "features": {
            "rms": 0.028201570802306824,
            "centroidHz": 249.9,
            "centroidVariationPercent": 20.2,
            "upperEnergyPercent": 0.1,
            "attackMs": 17.6
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/timpani.png",
      "referenceSpectrum": "../timbre-atlas/timpani-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "woodblock",
      "name": "woodblock",
      "family": "woodblock",
      "baseMidi": null,
      "percussion": true,
      "seconds": 8,
      "rmsDb": -23.484322926460514,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-woodblock-1.0.0.mp3",
          "settingsSha256": "f8faea647fe523ab69d7d065d790159b5d885c5717dd95f93221b968e7b12ec0",
          "image": "history-woodblock-1.0.0.png",
          "sha256": "6ee3dd350129f9d712fed4a00b8dade32c21012a88ea12a45a3d59358d08c76a"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-woodblock-1.1.0.mp3",
          "settingsSha256": "c30940b507702040ed7700da8327db09d39ec70cb624e8aa62fe4dc847caebeb",
          "image": "history-woodblock-1.1.0.png",
          "sha256": "f397509f6117e17d9157d3e6b4edd76e76456387e2993edf6fc6ead10535da3a"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-woodblock-1.2.1.mp3",
          "settingsSha256": "c30940b507702040ed7700da8327db09d39ec70cb624e8aa62fe4dc847caebeb",
          "image": "history-woodblock-1.2.1.png",
          "sha256": "c673e691f13111054db8ab03b60c77e2e59b76235277d910328fbb3cdeda84b8"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-woodblock-1.3.0.mp3",
          "settingsSha256": "c30940b507702040ed7700da8327db09d39ec70cb624e8aa62fe4dc847caebeb",
          "image": "history-woodblock-1.3.0.png",
          "sha256": "eabbedfc062cf574acc3415c43dd9b78da21043c2cd387e94347de53acd6a822"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-woodblock-1.4.0.mp3",
          "settingsSha256": "c30940b507702040ed7700da8327db09d39ec70cb624e8aa62fe4dc847caebeb",
          "image": "history-woodblock-1.4.0.png",
          "sha256": "bdecf3be6f2c7702bb97d5a09f003869e9cc3fb65e201713c933eea1f4bb6c71"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-woodblock-3.5.0.mp3",
          "settingsSha256": "c30940b507702040ed7700da8327db09d39ec70cb624e8aa62fe4dc847caebeb",
          "image": "history-woodblock-3.5.0.png",
          "sha256": "7aea8f5e77ee3d8d54542c4fcf89e4711586cdea79e5237550a7858b545ee7d9"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Idiophones/Struck%20Idiophones/Woodblock/wood_click2_mp.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Idiophones/Struck%20Idiophones/Woodblock/wood_click2_mp.wav",
          "license": "CC0",
          "label": "wood_click2_mp",
          "note": null,
          "sha256": "cfb04b07ceb70b6056ab1849cbbba53f658b4453982a6f44b4a05e19676361dd",
          "noteOffset": 12,
          "inharmonic": true,
          "start": 0,
          "measuredMidi": null,
          "features": {
            "rms": 0.006108003925502448,
            "centroidHz": 3269.6,
            "centroidVariationPercent": 4.1,
            "upperEnergyPercent": 85.31,
            "attackMs": 15.5
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Idiophones/Struck%20Idiophones/Woodblock/wood_click3_vl1.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Idiophones/Struck%20Idiophones/Woodblock/wood_click3_vl1.wav",
          "license": "CC0",
          "label": "wood_click3_vl1",
          "note": null,
          "sha256": "b38a06f037de70bb2cf98fd89f06af8d104d4123773d2e625691189a67495be5",
          "noteOffset": 12,
          "inharmonic": true,
          "start": 0,
          "measuredMidi": null,
          "features": {
            "rms": 0.0116804935592711,
            "centroidHz": 1824.5,
            "centroidVariationPercent": 6.5,
            "upperEnergyPercent": 19.85,
            "attackMs": 27.7
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Idiophones/Struck%20Idiophones/Woodblock/wood_click3_vl2.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Idiophones/Struck%20Idiophones/Woodblock/wood_click3_vl2.wav",
          "license": "CC0",
          "label": "wood_click3_vl2",
          "note": null,
          "sha256": "eb93ee3fa02d66588a48b34d8b686638dd4e90433c8c75f2397a3dbc35c61d10",
          "noteOffset": 12,
          "inharmonic": true,
          "start": 0,
          "measuredMidi": null,
          "features": {
            "rms": 0.025891701531401138,
            "centroidHz": 1526.1,
            "centroidVariationPercent": 2.8,
            "upperEnergyPercent": 5.47,
            "attackMs": 25.7
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/woodblock.png",
      "referenceSpectrum": "../timbre-atlas/woodblock-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "taiko-drum",
      "name": "taiko drum",
      "family": "taiko",
      "baseMidi": null,
      "percussion": true,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-taiko-drum-1.0.0.mp3",
          "settingsSha256": "c35091c7af2c3a576d8f0463230a887fc1f10e6d5d104f8d19e1cc7045d68b50",
          "image": "history-taiko-drum-1.0.0.png",
          "sha256": "23dcf13bb579eb257f614594cb4dc5716c80b7adcfba02ef85e72f95bfba9be0"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-taiko-drum-1.1.0.mp3",
          "settingsSha256": "b7eb7c9418b2e13a91bb76b2793846114618ad366a0fc9f270de250efefc13da",
          "image": "history-taiko-drum-1.1.0.png",
          "sha256": "41a16b4088af20ca88ff307f9292f385772aeca3574f6c984a3f9c8b4f3f71e9"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-taiko-drum-1.2.1.mp3",
          "settingsSha256": "b7eb7c9418b2e13a91bb76b2793846114618ad366a0fc9f270de250efefc13da",
          "image": "history-taiko-drum-1.2.1.png",
          "sha256": "d9b4fb310dc8069bcba74f388e843edc57ed37d2dee17fe97c6beef3182182a0"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-taiko-drum-1.3.0.mp3",
          "settingsSha256": "b7eb7c9418b2e13a91bb76b2793846114618ad366a0fc9f270de250efefc13da",
          "image": "history-taiko-drum-1.3.0.png",
          "sha256": "dc3b07c808c82a911155650c99bd82f1bec195b67fbacf1efd0a4f43fd1989d7"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-taiko-drum-1.4.0.mp3",
          "settingsSha256": "b7eb7c9418b2e13a91bb76b2793846114618ad366a0fc9f270de250efefc13da",
          "image": "history-taiko-drum-1.4.0.png",
          "sha256": "3eabfcb211c95c0549574ef9f54e675efc84f4ec5872c4099147bbf0ff93af38"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-taiko-drum-3.5.0.mp3",
          "settingsSha256": "b7eb7c9418b2e13a91bb76b2793846114618ad366a0fc9f270de250efefc13da",
          "image": "history-taiko-drum-3.5.0.png",
          "sha256": "c4c3d541df1fbef4f7cb2c4869dd0e1025e7da55f163ef7d8ac48197a6ca78b1"
        }
      ],
      "references": [
        {
          "url": "https://cdn.freesound.org/previews/127/127337_734703-hq.mp3",
          "sourceUrl": "https://freesound.org/people/whatsanickname4u/sounds/127337/",
          "source": "Freesound - taikoset1_ste58.wav by whatsanickname4u",
          "license": "CC BY 3.0",
          "label": "Freesound - taikoset1_ste58.wav by whatsanickname4u; compressed preview; excerpt 1 of one recording",
          "note": null,
          "sha256": "2a81a5a212826e091debeb1486fc85dae79fbf9877c3e06b9786910b05521aff",
          "noteOffset": 0,
          "contextual": true,
          "excerpt": 0,
          "start": 0,
          "measuredMidi": null,
          "features": {
            "rms": 0.04811467928741332,
            "centroidHz": 223.2,
            "centroidVariationPercent": 21.7,
            "upperEnergyPercent": 0.18,
            "attackMs": 361.3
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://cdn.freesound.org/previews/127/127337_734703-hq.mp3",
          "sourceUrl": "https://freesound.org/people/whatsanickname4u/sounds/127337/",
          "source": "Freesound - taikoset1_ste58.wav by whatsanickname4u",
          "license": "CC BY 3.0",
          "label": "Freesound - taikoset1_ste58.wav by whatsanickname4u; compressed preview; excerpt 2 of one recording",
          "note": null,
          "sha256": "2a81a5a212826e091debeb1486fc85dae79fbf9877c3e06b9786910b05521aff",
          "noteOffset": 0,
          "contextual": true,
          "excerpt": 1,
          "start": 104.124,
          "measuredMidi": null,
          "features": {
            "rms": 0.01597308841318552,
            "centroidHz": 283.5,
            "centroidVariationPercent": 22.9,
            "upperEnergyPercent": 0.46,
            "attackMs": 2886.9
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://cdn.freesound.org/previews/127/127337_734703-hq.mp3",
          "sourceUrl": "https://freesound.org/people/whatsanickname4u/sounds/127337/",
          "source": "Freesound - taikoset1_ste58.wav by whatsanickname4u",
          "license": "CC BY 3.0",
          "label": "Freesound - taikoset1_ste58.wav by whatsanickname4u; compressed preview; excerpt 3 of one recording",
          "note": null,
          "sha256": "2a81a5a212826e091debeb1486fc85dae79fbf9877c3e06b9786910b05521aff",
          "noteOffset": 0,
          "contextual": true,
          "excerpt": 2,
          "start": 208.247,
          "measuredMidi": null,
          "features": {
            "rms": 0.0036806401184508028,
            "centroidHz": 178.1,
            "centroidVariationPercent": 77.3,
            "upperEnergyPercent": 0.04,
            "attackMs": 1039.1
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/taiko-drum.png",
      "referenceSpectrum": "../timbre-atlas/taiko-drum-spectrum.png",
      "coverage": "instrument",
      "contextual": true
    },
    {
      "id": "tom-tom",
      "name": "tom-tom",
      "family": "tom-tom",
      "baseMidi": null,
      "percussion": true,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-tom-tom-1.0.0.mp3",
          "settingsSha256": "054fea2ce92c8103c56f4849bbd7eda7bc0f54b637471639dacec8741d7ee923",
          "image": "history-tom-tom-1.0.0.png",
          "sha256": "31a321a862a8f82b2008ebf8733ace0e1b09fd0160ca9b97f0ba35dae3315471"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-tom-tom-1.1.0.mp3",
          "settingsSha256": "8838d1b9407ea91315b2fd3ef772f60297d3b51fa734a154d41e4432bc9d5a3a",
          "image": "history-tom-tom-1.1.0.png",
          "sha256": "c8324aaeff9c2597a49d0b30f731b3ff0ace6f3e771d66837bc86d9169135805"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-tom-tom-1.2.1.mp3",
          "settingsSha256": "8838d1b9407ea91315b2fd3ef772f60297d3b51fa734a154d41e4432bc9d5a3a",
          "image": "history-tom-tom-1.2.1.png",
          "sha256": "1db1e60e475b8da6a8a6e661049be9da36ea3e88e60e2e26ef7c744dd6ee6aee"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-tom-tom-1.3.0.mp3",
          "settingsSha256": "8838d1b9407ea91315b2fd3ef772f60297d3b51fa734a154d41e4432bc9d5a3a",
          "image": "history-tom-tom-1.3.0.png",
          "sha256": "f45c89cb9d08efe2842c780e58ed3416fef5a96fb3c1603b125efc138ccead90"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-tom-tom-1.4.0.mp3",
          "settingsSha256": "8838d1b9407ea91315b2fd3ef772f60297d3b51fa734a154d41e4432bc9d5a3a",
          "image": "history-tom-tom-1.4.0.png",
          "sha256": "03689e3919cc6107e13147caf59398117d174378d629b4f909f97b5f74e4d37b"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-tom-tom-3.5.0.mp3",
          "settingsSha256": "8838d1b9407ea91315b2fd3ef772f60297d3b51fa734a154d41e4432bc9d5a3a",
          "image": "history-tom-tom-3.5.0.png",
          "sha256": "00829f17890c9f8f7746996d35d3a3428b857be058f477a7ffe871017554317f"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Membranophones/Struck%20Membranophones/Tom%201/Mallet/TomH_HitM_v2_rr1_Mid.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Membranophones/Struck%20Membranophones/Tom%201/Mallet/TomH_HitM_v2_rr1_Mid.wav",
          "license": "CC0",
          "label": "TomH_HitM_v2_rr1_Mid",
          "note": null,
          "sha256": "8bb344fbbc163e4a028551b4e9a12ff899e36c01d7d3f8c1ab30646078796497",
          "noteOffset": 12,
          "inharmonic": true,
          "start": 0,
          "measuredMidi": null,
          "features": {
            "rms": 0.008577248031151778,
            "centroidHz": 122.2,
            "centroidVariationPercent": 13.3,
            "upperEnergyPercent": 0,
            "attackMs": 15.4
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Membranophones/Struck%20Membranophones/Tom%201/Mallet/TomH_HitM_v3_rr1_Mid.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Membranophones/Struck%20Membranophones/Tom%201/Mallet/TomH_HitM_v3_rr1_Mid.wav",
          "license": "CC0",
          "label": "TomH_HitM_v3_rr1_Mid",
          "note": null,
          "sha256": "f39c17ddb76504dcab90d0d14bbf2b722eda87eb533401a662a3ef454b76bea0",
          "noteOffset": 12,
          "inharmonic": true,
          "start": 0,
          "measuredMidi": null,
          "features": {
            "rms": 0.02008813240261393,
            "centroidHz": 136,
            "centroidVariationPercent": 12.3,
            "upperEnergyPercent": 0.01,
            "attackMs": 13.8
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Membranophones/Struck%20Membranophones/Tom%201/Mallet/TomH_HitM_v4_rr1_Mid.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Membranophones/Struck%20Membranophones/Tom%201/Mallet/TomH_HitM_v4_rr1_Mid.wav",
          "license": "CC0",
          "label": "TomH_HitM_v4_rr1_Mid",
          "note": null,
          "sha256": "a57ac74e93079d72c0cde41ac97391db757a450a167e85f115b7248a726c9b02",
          "noteOffset": 12,
          "inharmonic": true,
          "start": 0,
          "measuredMidi": null,
          "features": {
            "rms": 0.04877626607568827,
            "centroidHz": 164.9,
            "centroidVariationPercent": 18.6,
            "upperEnergyPercent": 0.07,
            "attackMs": 12.7
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/tom-tom.png",
      "referenceSpectrum": "../timbre-atlas/tom-tom-spectrum.png",
      "coverage": "instrument",
      "contextual": false
    },
    {
      "id": "felt-room-piano",
      "name": "felt room piano",
      "family": "piano",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-felt-room-piano-1.0.0.mp3",
          "settingsSha256": "4ec43642c6f4b88fccb7c382508af35482bda4f48cf2a35dda7fe08b7a91f010",
          "image": "history-felt-room-piano-1.0.0.png",
          "sha256": "b0487c18d8aaa09681071f5e3b3bd645e2ba9dd96e49f4022e4a54e4d0ccbf14"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-felt-room-piano-1.1.0.mp3",
          "settingsSha256": "5a71ac77ef480e5ff23ab2d67feb4944c28e001c25c0d83fa5b33b9fc1b68aee",
          "image": "history-felt-room-piano-1.1.0.png",
          "sha256": "2c45f93165c69fc194f53c454696b2e4cb7e353f3bbff9f09f4bfb4b47f7dc21"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-felt-room-piano-1.2.1.mp3",
          "settingsSha256": "b38ba2df3964bd4a752104dcfd32182ba7e1ee5b7d802b4002888fd58e3064d0",
          "image": "history-felt-room-piano-1.2.1.png",
          "sha256": "7bf3b4e32b489e8bf8e31d2abafc911be4f6b50d4d80ea6dc4116fdec31e374a"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-felt-room-piano-1.3.0.mp3",
          "settingsSha256": "b38ba2df3964bd4a752104dcfd32182ba7e1ee5b7d802b4002888fd58e3064d0",
          "unchangedFrom": "1.2.1",
          "image": "history-felt-room-piano-1.3.0.png",
          "sha256": "7bf3b4e32b489e8bf8e31d2abafc911be4f6b50d4d80ea6dc4116fdec31e374a"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-felt-room-piano-1.4.0.mp3",
          "settingsSha256": "b38ba2df3964bd4a752104dcfd32182ba7e1ee5b7d802b4002888fd58e3064d0",
          "unchangedFrom": "1.3.0",
          "image": "history-felt-room-piano-1.4.0.png",
          "sha256": "7bf3b4e32b489e8bf8e31d2abafc911be4f6b50d4d80ea6dc4116fdec31e374a"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-felt-room-piano-3.5.0.mp3",
          "settingsSha256": "b38ba2df3964bd4a752104dcfd32182ba7e1ee5b7d802b4002888fd58e3064d0",
          "unchangedFrom": "1.4.0",
          "image": "history-felt-room-piano-3.5.0.png",
          "sha256": "7bf3b4e32b489e8bf8e31d2abafc911be4f6b50d4d80ea6dc4116fdec31e374a"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Chordophones/Zithers/Grand%20Piano%2C%20Kawai/Sustains/GPiano_sus_C4_v1_rr1_Player.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Chordophones/Zithers/Grand%20Piano%2C%20Kawai/Sustains/GPiano_sus_C4_v1_rr1_Player.wav",
          "license": "CC0",
          "label": "GPiano_sus_C4_v1_rr1_Player",
          "note": "C4",
          "sha256": "f921d4737ee847ecb55ce251a94e1841069b70e206b00342676954992ea7d0dc",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.0010112551977641312,
            "centroidHz": 522.6,
            "centroidVariationPercent": 5,
            "upperEnergyPercent": 0,
            "attackMs": 17.5
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Chordophones/Zithers/Grand%20Piano%2C%20Kawai/Sustains/GPiano_sus_C4_v2_rr1_Player.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Chordophones/Zithers/Grand%20Piano%2C%20Kawai/Sustains/GPiano_sus_C4_v2_rr1_Player.wav",
          "license": "CC0",
          "label": "GPiano_sus_C4_v2_rr1_Player",
          "note": "C4",
          "sha256": "69845de40a38ed6501746520f9f385ae56200a4372faed48178e64a32a75e58c",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.006774327195572671,
            "centroidHz": 531.4,
            "centroidVariationPercent": 10.4,
            "upperEnergyPercent": 0.03,
            "attackMs": 16.2
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VCSL/master/Chordophones/Zithers/Grand%20Piano%2C%20Kawai/Sustains/GPiano_sus_C4_v3_rr1_Player.wav",
          "source": "Versilian Community Sample Library",
          "sourceUrl": "https://github.com/sgossner/VCSL/blob/master/Chordophones/Zithers/Grand%20Piano%2C%20Kawai/Sustains/GPiano_sus_C4_v3_rr1_Player.wav",
          "license": "CC0",
          "label": "GPiano_sus_C4_v3_rr1_Player",
          "note": "C4",
          "sha256": "eb5faca3331cd32f15f6a2302dba69b073a2ca600fed606bf456e60260d06e5b",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.026318397235429464,
            "centroidHz": 592.3,
            "centroidVariationPercent": 27,
            "upperEnergyPercent": 0.9,
            "attackMs": 15.3
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/grand-piano.png",
      "referenceSpectrum": "../timbre-atlas/grand-piano-spectrum.png",
      "coverage": "related preset: grand piano",
      "contextual": false
    },
    {
      "id": "distant-strings",
      "name": "distant strings",
      "family": "strings",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-distant-strings-1.0.0.mp3",
          "settingsSha256": "dcfd4e36c815728f816c94f96f5c243b59c15bb6316e132cc3c9c3d0a90c3080",
          "image": "history-distant-strings-1.0.0.png",
          "sha256": "990458a8594677bad595fb47a9aad185a4160c694e2d95578966063111f7b8a4"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-distant-strings-1.1.0.mp3",
          "settingsSha256": "332b14beb9b11c50cd80ab16e7da7ecad54e0330ee63f4d39c8867959277e566",
          "image": "history-distant-strings-1.1.0.png",
          "sha256": "6c5e0345d9b286a957ec7bc70131890d7fbd038310fe84c659c33c076b54b918"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-distant-strings-1.2.1.mp3",
          "settingsSha256": "0b0be36403296787933673353d3d01dce1e1d599b554af556c9285b2f0c177fa",
          "image": "history-distant-strings-1.2.1.png",
          "sha256": "fdb412eeb5a04d092bb4585eaa6afee01b045629bffc74a16232b8d233cce1ba"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-distant-strings-1.3.0.mp3",
          "settingsSha256": "0b0be36403296787933673353d3d01dce1e1d599b554af556c9285b2f0c177fa",
          "unchangedFrom": "1.2.1",
          "image": "history-distant-strings-1.3.0.png",
          "sha256": "fdb412eeb5a04d092bb4585eaa6afee01b045629bffc74a16232b8d233cce1ba"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-distant-strings-1.4.0.mp3",
          "settingsSha256": "0b0be36403296787933673353d3d01dce1e1d599b554af556c9285b2f0c177fa",
          "unchangedFrom": "1.3.0",
          "image": "history-distant-strings-1.4.0.png",
          "sha256": "fdb412eeb5a04d092bb4585eaa6afee01b045629bffc74a16232b8d233cce1ba"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-distant-strings-3.5.0.mp3",
          "settingsSha256": "0b0be36403296787933673353d3d01dce1e1d599b554af556c9285b2f0c177fa",
          "unchangedFrom": "1.4.0",
          "image": "history-distant-strings-3.5.0.png",
          "sha256": "fdb412eeb5a04d092bb4585eaa6afee01b045629bffc74a16232b8d233cce1ba"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/sgossner/VSCO-2-CE/master/Strings/Violin%20Section/susVib/VlnEns_susVib_C4_v1.wav",
          "source": "VSCO 2 Community Edition",
          "sourceUrl": "https://github.com/sgossner/VSCO-2-CE/blob/master/Strings/Violin%20Section/susVib/VlnEns_susVib_C4_v1.wav",
          "license": "CC0",
          "label": "VlnEns_susVib_C4_v1",
          "note": "C4",
          "sha256": "c07edd5b2119fa1da2207aba996961b50dd616f69bbcf2300ab271bc6c16239f",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.025678107959448665,
            "centroidHz": 656.5,
            "centroidVariationPercent": 21.6,
            "upperEnergyPercent": 4.19,
            "attackMs": 2954.8
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VSCO-2-CE/master/Strings/Violin%20Section/susVib/VlnEns_susVib_C4_v2.wav",
          "source": "VSCO 2 Community Edition",
          "sourceUrl": "https://github.com/sgossner/VSCO-2-CE/blob/master/Strings/Violin%20Section/susVib/VlnEns_susVib_C4_v2.wav",
          "license": "CC0",
          "label": "VlnEns_susVib_C4_v2",
          "note": "C4",
          "sha256": "5857387b40c412f756ef281c1171247664432a4e5078c98142d595d15cd92ef9",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.06948067651244699,
            "centroidHz": 930.7,
            "centroidVariationPercent": 34.9,
            "upperEnergyPercent": 14.32,
            "attackMs": 1550
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/sgossner/VSCO-2-CE/master/Strings/Violin%20Section/susVib/VlnEns_susVib_A2_v1.wav",
          "source": "VSCO 2 Community Edition",
          "sourceUrl": "https://github.com/sgossner/VSCO-2-CE/blob/master/Strings/Violin%20Section/susVib/VlnEns_susVib_A2_v1.wav",
          "license": "CC0",
          "label": "VlnEns_susVib_A2_v1",
          "note": "A2",
          "sha256": "5b3ff9f991642a6dc2fdad56a7d94f581077d2c4082cc1ed89156737716ff22c",
          "noteOffset": 12,
          "start": 0,
          "measuredMidi": 57,
          "features": {
            "rms": 0.013598345604459711,
            "centroidHz": 678.2,
            "centroidVariationPercent": 14.9,
            "upperEnergyPercent": 3.15,
            "attackMs": 2541.7
          },
          "licenseUrl": "https://creativecommons.org/publicdomain/zero/1.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/strings.png",
      "referenceSpectrum": "../timbre-atlas/strings-spectrum.png",
      "coverage": "related preset: strings",
      "contextual": false
    },
    {
      "id": "intimate-nylon",
      "name": "intimate nylon",
      "family": "nylon-guitar",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-intimate-nylon-1.0.0.mp3",
          "settingsSha256": "95b13ea023dbb06b4a3b24678dcc2470529e1294f075d7b4a18c4ec476898fce",
          "image": "history-intimate-nylon-1.0.0.png",
          "sha256": "74945500463d4d21fd6f9129be3749a0b152cb3296f38752739c25bba555bd22"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-intimate-nylon-1.1.0.mp3",
          "settingsSha256": "0e8213872acf5f113768818dc28633f31fb589b01da9212d4b17e179b159a3a5",
          "image": "history-intimate-nylon-1.1.0.png",
          "sha256": "4bbb4294538ea50c5225b6e63b23a09a81644e9f8c47943855d028aec7280deb"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-intimate-nylon-1.2.1.mp3",
          "settingsSha256": "a500c9c95c106ac87232a01b642b00e582381652715b25697eee375d26c1be4e",
          "image": "history-intimate-nylon-1.2.1.png",
          "sha256": "805745867efdd52aa1cf075008d59b084432c720e0e1910a24c8434495b7c508"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-intimate-nylon-1.3.0.mp3",
          "settingsSha256": "a500c9c95c106ac87232a01b642b00e582381652715b25697eee375d26c1be4e",
          "unchangedFrom": "1.2.1",
          "image": "history-intimate-nylon-1.3.0.png",
          "sha256": "805745867efdd52aa1cf075008d59b084432c720e0e1910a24c8434495b7c508"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-intimate-nylon-1.4.0.mp3",
          "settingsSha256": "a500c9c95c106ac87232a01b642b00e582381652715b25697eee375d26c1be4e",
          "unchangedFrom": "1.3.0",
          "image": "history-intimate-nylon-1.4.0.png",
          "sha256": "805745867efdd52aa1cf075008d59b084432c720e0e1910a24c8434495b7c508"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-intimate-nylon-3.5.0.mp3",
          "settingsSha256": "a500c9c95c106ac87232a01b642b00e582381652715b25697eee375d26c1be4e",
          "unchangedFrom": "1.4.0",
          "image": "history-intimate-nylon-3.5.0.png",
          "sha256": "805745867efdd52aa1cf075008d59b084432c720e0e1910a24c8434495b7c508"
        }
      ],
      "references": [
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/guitar-nylon/A3.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/guitar-nylon/A3.wav",
          "license": "CC BY 3.0",
          "label": "A3",
          "note": "A3",
          "sha256": "11385b6091270f10ada8bba9f7bfa3c0126d3205fa0e109c86427c8f9cd29dfb",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 57,
          "features": {
            "rms": 0.08962572600848184,
            "centroidHz": 714.3,
            "centroidVariationPercent": 2.5,
            "upperEnergyPercent": 0.93,
            "attackMs": 5.6
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/guitar-nylon/E3.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/guitar-nylon/E3.wav",
          "license": "CC BY 3.0",
          "label": "E3",
          "note": "E3",
          "sha256": "e19947e7f130930ac76f6f39d33df49dfe99a240274cf1bc4f31c36239398401",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 52,
          "features": {
            "rms": 0.07642894163615535,
            "centroidHz": 792.6,
            "centroidVariationPercent": 12.7,
            "upperEnergyPercent": 1.11,
            "attackMs": 9.6
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://raw.githubusercontent.com/nbrosowsky/tonejs-instruments/master/samples/guitar-nylon/A2.wav",
          "source": "Neil Brosowsky / Tone.js instrument samples",
          "sourceUrl": "https://github.com/nbrosowsky/tonejs-instruments/blob/master/samples/guitar-nylon/A2.wav",
          "license": "CC BY 3.0",
          "label": "A2",
          "note": "A2",
          "sha256": "1f3268fa65b1204382b73357a1537a524e5a61752ab104212fd1315738adb988",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 45,
          "features": {
            "rms": 0.11485230531375158,
            "centroidHz": 359.3,
            "centroidVariationPercent": 2.1,
            "upperEnergyPercent": 0.01,
            "attackMs": 16.3
          },
          "licenseUrl": "https://creativecommons.org/licenses/by/3.0/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/nylon-guitar.png",
      "referenceSpectrum": "../timbre-atlas/nylon-guitar-spectrum.png",
      "coverage": "related preset: nylon guitar",
      "contextual": false
    },
    {
      "id": "tape-guitar",
      "name": "tape guitar",
      "family": "guitar",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-tape-guitar-1.0.0.mp3",
          "settingsSha256": "dcf9041dc4f8278014951eb32d9f19b1dec673fa7e83f84feaeb1a1e45cd5480",
          "image": "history-tape-guitar-1.0.0.png",
          "sha256": "cdb8b93e1c1e83862ecbcad7b7589527374956e44d4ef94228509a9fd2361e46"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-tape-guitar-1.1.0.mp3",
          "settingsSha256": "62518463fed3e18c5f032d0a0bda0e5df0b6fcf5f1c44fc70c620df89b3bcd9c",
          "image": "history-tape-guitar-1.1.0.png",
          "sha256": "cda93555c005ef7c7ba7c5dd884b4857ce0aa16cbc59798b77a7b144a35e8d78"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-tape-guitar-1.2.1.mp3",
          "settingsSha256": "d1d67da3774cc8e66186fb309dc2daa8a5312958c09b349a2fcd9d490f560997",
          "image": "history-tape-guitar-1.2.1.png",
          "sha256": "edf278addc3e837e50bb5c028ef2f1c93d61cfc746d163b74dabe1c8d60bc152"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-tape-guitar-1.3.0.mp3",
          "settingsSha256": "d1d67da3774cc8e66186fb309dc2daa8a5312958c09b349a2fcd9d490f560997",
          "unchangedFrom": "1.2.1",
          "image": "history-tape-guitar-1.3.0.png",
          "sha256": "edf278addc3e837e50bb5c028ef2f1c93d61cfc746d163b74dabe1c8d60bc152"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-tape-guitar-1.4.0.mp3",
          "settingsSha256": "d1d67da3774cc8e66186fb309dc2daa8a5312958c09b349a2fcd9d490f560997",
          "unchangedFrom": "1.3.0",
          "image": "history-tape-guitar-1.4.0.png",
          "sha256": "edf278addc3e837e50bb5c028ef2f1c93d61cfc746d163b74dabe1c8d60bc152"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-tape-guitar-3.5.0.mp3",
          "settingsSha256": "d1d67da3774cc8e66186fb309dc2daa8a5312958c09b349a2fcd9d490f560997",
          "unchangedFrom": "1.4.0",
          "image": "history-tape-guitar-3.5.0.png",
          "sha256": "edf278addc3e837e50bb5c028ef2f1c93d61cfc746d163b74dabe1c8d60bc152"
        }
      ],
      "references": [
        {
          "archive": "guitar.zip",
          "member": "guitar_A3_very-long_piano_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "A3",
          "label": "A3 / very-long / piano / normal",
          "sha256": "1c62f4c377b5dfacc950360a61b4fe8cf1fe283e2ddf81b92f6668c0f5f0937c",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 57,
          "features": {
            "rms": 0.017218807558629007,
            "centroidHz": 229.4,
            "centroidVariationPercent": 24,
            "upperEnergyPercent": 0,
            "attackMs": 37
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "guitar.zip",
          "member": "guitar_A3_very-long_forte_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "A3",
          "label": "A3 / very-long / forte / normal",
          "sha256": "801285c5ef16df758abdab3a3ec535264fbcd2f07af2c4483bc7cc6aa467331a",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 57,
          "features": {
            "rms": 0.02088678021150544,
            "centroidHz": 18,
            "centroidVariationPercent": 17.5,
            "upperEnergyPercent": 0,
            "attackMs": 1770.2
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "guitar.zip",
          "member": "guitar_A2_very-long_forte_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "A2",
          "label": "A2 / very-long / forte / normal",
          "sha256": "69aeb61813e9039e50984dfae2644d8c2f7e9dff9c72c16e70d1eb86244157f6",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 45,
          "features": {
            "rms": 0.015472654337848231,
            "centroidHz": 287.2,
            "centroidVariationPercent": 29.1,
            "upperEnergyPercent": 0.12,
            "attackMs": 236.6
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/steel-guitar.png",
      "referenceSpectrum": "../timbre-atlas/steel-guitar-spectrum.png",
      "coverage": "related preset: steel guitar",
      "contextual": false
    },
    {
      "id": "slow-bloom-flute",
      "name": "slow bloom flute",
      "family": "flute",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-slow-bloom-flute-1.0.0.mp3",
          "settingsSha256": "52c557649fe5e90241469b09c922e892b2f11371184533fbf173a76a8b906307",
          "image": "history-slow-bloom-flute-1.0.0.png",
          "sha256": "d6a7def97bb8f0af57c669e812e93ee74c346af503056dbd45ecddca6170c56f"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-slow-bloom-flute-1.1.0.mp3",
          "settingsSha256": "0f9b137260ee3cf46eb929425ada1d7a5f4be093af68a433cc5ae209cd4c7431",
          "image": "history-slow-bloom-flute-1.1.0.png",
          "sha256": "f8ef43d50e9a598627c456ae36f98ea9815ed8963b2473c5aecd38d29723d372"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-slow-bloom-flute-1.2.1.mp3",
          "settingsSha256": "813768c18dfeba5b561f5308f235a8bb9c5a40c55916a7d312bb38bccb4bb39e",
          "image": "history-slow-bloom-flute-1.2.1.png",
          "sha256": "835ecff9d86a3c5fc40ab150f012cbbb3c73dfd00808f285bcec187654774fc9"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "First measured harmonic-envelope sources; frozen release renderer.",
          "audio": "history-slow-bloom-flute-1.3.0.mp3",
          "settingsSha256": "b3aeafe07c0562f2f8f3dfb5a3b492c05d1f490031bd1422b7f724cc873fd588",
          "image": "history-slow-bloom-flute-1.3.0.png",
          "sha256": "d91ba85691c0013423501d5ae8bbdf55493e8be35a0ca489e63c6bc577fb3976"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Measured onset contours, sixteen harmonic frames and eight residual-noise bands.",
          "audio": "history-slow-bloom-flute-1.4.0.mp3",
          "settingsSha256": "b3aeafe07c0562f2f8f3dfb5a3b492c05d1f490031bd1422b7f724cc873fd588",
          "image": "history-slow-bloom-flute-1.4.0.png",
          "sha256": "88a6184cae3c233edca5f9013b51cbfef83e87a51da5f080ead673bf278f1ae0"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-slow-bloom-flute-3.5.0.mp3",
          "settingsSha256": "b3aeafe07c0562f2f8f3dfb5a3b492c05d1f490031bd1422b7f724cc873fd588",
          "unchangedFrom": "1.4.0",
          "image": "history-slow-bloom-flute-3.5.0.png",
          "sha256": "88a6184cae3c233edca5f9013b51cbfef83e87a51da5f080ead673bf278f1ae0"
        }
      ],
      "references": [
        {
          "archive": "flute.zip",
          "member": "flute_C5_1_piano_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C5",
          "label": "C5 / 1 / piano / normal",
          "sha256": "f7672533e312679111f841dff8fc2c82fdb3f9c5e3d66f5422e15b25e1ce7b99",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.011510124916612791,
            "centroidHz": 568.6,
            "centroidVariationPercent": 6.9,
            "upperEnergyPercent": 0.19,
            "attackMs": 519.6
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "flute.zip",
          "member": "flute_C5_1_mezzo-forte_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C5",
          "label": "C5 / 1 / mezzo-forte / normal",
          "sha256": "78f0ee16fd81a6f4824d356dd5e50f92b335828877fa94e8940f24eb27b6156c",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.011852680776562785,
            "centroidHz": 679.3,
            "centroidVariationPercent": 14.2,
            "upperEnergyPercent": 1.22,
            "attackMs": 514.6
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "archive": "flute.zip",
          "member": "flute_C5_1_forte_normal.mp3",
          "source": "Philharmonia Orchestra",
          "sourceUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "license": "Philharmonia sample terms; derived analysis only, original audio not redistributed",
          "note": "C5",
          "label": "C5 / 1 / forte / normal",
          "sha256": "65cb9a2a9948af0f00683b88d45f991a0f1bab6db5ddb6f5920e31610869823e",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": 72,
          "features": {
            "rms": 0.013218214152669409,
            "centroidHz": 1116.6,
            "centroidVariationPercent": 21.5,
            "upperEnergyPercent": 4.95,
            "attackMs": 145.4
          },
          "licenseUrl": "https://philharmonia.co.uk/resources/sound-samples/",
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/flute.png",
      "referenceSpectrum": "../timbre-atlas/flute-spectrum.png",
      "coverage": "related preset: flute",
      "contextual": false
    },
    {
      "id": "dusty-clavinet",
      "name": "dusty clavinet",
      "family": "clavinet",
      "baseMidi": 60,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20,
      "versions": [
        {
          "version": "1.0.0",
          "title": "Original presets",
          "description": "Original catalog voicing; reconstructed from archived settings.",
          "audio": "history-dusty-clavinet-1.0.0.mp3",
          "settingsSha256": "10e767c958a2d73103fc4386f11f621ed90f5f1a1be27e7ee3e2ed1c95ddb669",
          "image": "history-dusty-clavinet-1.0.0.png",
          "sha256": "ba1afcf51a4501922c85d990ae1d17c11276618a24a6dafd116b548487de7d38"
        },
        {
          "version": "1.1.0",
          "title": "Resonance and pressure",
          "description": "Instrument body filters, excitation spectra and dynamic brightness.",
          "audio": "history-dusty-clavinet-1.1.0.mp3",
          "settingsSha256": "23dca7885cf215f14ef596a6a331bb77abffc0968ffcb7865f6762b8cebf34c2",
          "image": "history-dusty-clavinet-1.1.0.png",
          "sha256": "7010be9b9df5057973cd6159ba75f65a06f3a57f7ecfef4ddbf3683d212cdc30"
        },
        {
          "version": "1.2.1",
          "title": "Body motion",
          "description": "Bow, reed, air and pluck excitation with sustained timbral movement.",
          "audio": "history-dusty-clavinet-1.2.1.mp3",
          "settingsSha256": "c0b9598a8c1598b79686d2a385b70d225c8f0187a31d6cc2549141c0c5b51fda",
          "image": "history-dusty-clavinet-1.2.1.png",
          "sha256": "98ba7414a505a92d9bea763150ca25815e163329fa5c73b250c702f1627fe0fb"
        },
        {
          "version": "1.3.0",
          "title": "Spectral sources",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-dusty-clavinet-1.3.0.mp3",
          "settingsSha256": "c0b9598a8c1598b79686d2a385b70d225c8f0187a31d6cc2549141c0c5b51fda",
          "unchangedFrom": "1.2.1",
          "image": "history-dusty-clavinet-1.3.0.png",
          "sha256": "98ba7414a505a92d9bea763150ca25815e163329fa5c73b250c702f1627fe0fb"
        },
        {
          "version": "1.4.0",
          "title": "Articulation and texture",
          "description": "Catalog voicing revision; this instrument retains its own synthesis engine.",
          "audio": "history-dusty-clavinet-1.4.0.mp3",
          "settingsSha256": "c0b9598a8c1598b79686d2a385b70d225c8f0187a31d6cc2549141c0c5b51fda",
          "unchangedFrom": "1.3.0",
          "image": "history-dusty-clavinet-1.4.0.png",
          "sha256": "98ba7414a505a92d9bea763150ca25815e163329fa5c73b250c702f1627fe0fb"
        },
        {
          "version": "3.5.0",
          "title": "Coordinated release",
          "description": "API, instruments and frontend share this release. Browser audio reports and individual-track exports.",
          "audio": "history-dusty-clavinet-3.5.0.mp3",
          "settingsSha256": "c0b9598a8c1598b79686d2a385b70d225c8f0187a31d6cc2549141c0c5b51fda",
          "unchangedFrom": "1.4.0",
          "image": "history-dusty-clavinet-3.5.0.png",
          "sha256": "98ba7414a505a92d9bea763150ca25815e163329fa5c73b250c702f1627fe0fb"
        }
      ],
      "references": [
        {
          "url": "https://upload.wikimedia.org/wikipedia/commons/e/e3/Hohner_Clavinet_D6.ogg",
          "sourceUrl": "https://commons.wikimedia.org/wiki/File:Hohner_Clavinet_D6.ogg",
          "source": "Markus Ruffing. / Wikimedia Commons",
          "license": "Copyrighted free use",
          "licenseUrl": "https://commons.wikimedia.org/wiki/File:Hohner_Clavinet_D6.ogg",
          "label": "clavinet performance excerpt 1 of 3 (same recording)",
          "note": null,
          "excerpt": 0,
          "contextual": true,
          "sha256": "6f21a2d1b859173360099b9b6c1d16927403a1847c5c144667f2e850d3c49cc9",
          "noteOffset": 0,
          "start": 0,
          "measuredMidi": null,
          "features": {
            "rms": 0.1658963855878897,
            "centroidHz": 753.8,
            "centroidVariationPercent": 71.9,
            "upperEnergyPercent": 11.98,
            "attackMs": 1920.3
          },
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://upload.wikimedia.org/wikipedia/commons/e/e3/Hohner_Clavinet_D6.ogg",
          "sourceUrl": "https://commons.wikimedia.org/wiki/File:Hohner_Clavinet_D6.ogg",
          "source": "Markus Ruffing. / Wikimedia Commons",
          "license": "Copyrighted free use",
          "licenseUrl": "https://commons.wikimedia.org/wiki/File:Hohner_Clavinet_D6.ogg",
          "label": "clavinet performance excerpt 2 of 3 (same recording)",
          "note": null,
          "excerpt": 1,
          "contextual": true,
          "sha256": "6f21a2d1b859173360099b9b6c1d16927403a1847c5c144667f2e850d3c49cc9",
          "noteOffset": 0,
          "start": 48.995,
          "measuredMidi": null,
          "features": {
            "rms": 0.13233444055278623,
            "centroidHz": 929.3,
            "centroidVariationPercent": 38.1,
            "upperEnergyPercent": 5.66,
            "attackMs": 115.8
          },
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        },
        {
          "url": "https://upload.wikimedia.org/wikipedia/commons/e/e3/Hohner_Clavinet_D6.ogg",
          "sourceUrl": "https://commons.wikimedia.org/wiki/File:Hohner_Clavinet_D6.ogg",
          "source": "Markus Ruffing. / Wikimedia Commons",
          "license": "Copyrighted free use",
          "licenseUrl": "https://commons.wikimedia.org/wiki/File:Hohner_Clavinet_D6.ogg",
          "label": "clavinet performance excerpt 3 of 3 (same recording)",
          "note": null,
          "excerpt": 2,
          "contextual": true,
          "sha256": "6f21a2d1b859173360099b9b6c1d16927403a1847c5c144667f2e850d3c49cc9",
          "noteOffset": 0,
          "start": 97.989,
          "measuredMidi": null,
          "features": {
            "rms": 0.15721341838424918,
            "centroidHz": 1070.2,
            "centroidVariationPercent": 24.8,
            "upperEnergyPercent": 6.91,
            "attackMs": 84.6
          },
          "analysisChanges": "Excerpted where indicated, converted to mono 22050 Hz, trimmed, RMS-normalized and transformed into spectral plots; original audio not republished."
        }
      ],
      "referenceImage": "../timbre-atlas/clavinet.png",
      "referenceSpectrum": "../timbre-atlas/clavinet-spectrum.png",
      "coverage": "related preset: clavinet",
      "contextual": true
    },
    {
      "id": "sung-ah-low",
      "name": "sung ah (baritone)",
      "family": "voice",
      "baseMidi": 48,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20.0,
      "versions": [
        {
          "version": "4.0.0",
          "title": "Measured realism",
          "description": "New. Baritone 'ah' with formant envelopes, vibrato and breath measured from a real singer.",
          "audio": "history-sung-ah-low-4.0.0.mp3",
          "settingsSha256": "a0326bf95f7d521ddbff95b585fe2c8acbaeb832d1a2075aedb2dece3461a88f",
          "image": "history-sung-ah-low-4.0.0.png",
          "sha256": "a162317a717ddafe3f2eedf0e8515cef187285535497df65ca775dafd318ab55"
        }
      ],
      "references": [
        {
          "label": "m1_long_forte_a.wav",
          "source": "VocalSet (Wilkins et al.)",
          "sourceUrl": "https://zenodo.org/records/1442513",
          "license": "CC BY 4.0",
          "analysisChanges": "Sustain excerpted, resampled to 22050 Hz mono, level-normalized; used to fit this voice."
        },
        {
          "label": "m6_long_forte_a.wav",
          "source": "VocalSet (Wilkins et al.)",
          "sourceUrl": "https://zenodo.org/records/1442513",
          "license": "CC BY 4.0",
          "analysisChanges": "Sustain excerpted, resampled to 22050 Hz mono, level-normalized; held out from fitting."
        }
      ],
      "coverage": "instrument",
      "contextual": false,
      "listening": [
        {
          "label": "Real fitted singer, MIDI 59",
          "audio": "vocal-sung-ah-low-development-singer.mp3"
        },
        {
          "label": "Real held-out singer (not used for fitting), MIDI 60",
          "audio": "vocal-sung-ah-low-held-out-singer.mp3"
        },
        {
          "label": "Bop v4 sung ah (baritone), MIDI 59",
          "audio": "vocal-sung-ah-low-v4.mp3"
        }
      ],
      "referenceImage": "vocal-sung-ah-low-reference.png",
      "referenceSpectrum": "vocal-sung-ah-low-spectrum.png"
    },
    {
      "id": "sung-oo-low",
      "name": "sung oo (baritone)",
      "family": "voice",
      "baseMidi": 48,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20.0,
      "versions": [
        {
          "version": "4.0.0",
          "title": "Measured realism",
          "description": "New. Baritone 'oo' with formant envelopes, vibrato and breath measured from a real singer.",
          "audio": "history-sung-oo-low-4.0.0.mp3",
          "settingsSha256": "f1ca9be2b13122c6357aaccfd69b7cfa72cee2b6e2d906d5e388ed53f0334c87",
          "image": "history-sung-oo-low-4.0.0.png",
          "sha256": "a85523d2d8d47352f53a4870ad4ebfdd1d5e0209d23a5c79864dd8dfd0ba9b15"
        }
      ],
      "references": [
        {
          "label": "m1_long_forte_u.wav",
          "source": "VocalSet (Wilkins et al.)",
          "sourceUrl": "https://zenodo.org/records/1442513",
          "license": "CC BY 4.0",
          "analysisChanges": "Sustain excerpted, resampled to 22050 Hz mono, level-normalized; used to fit this voice."
        },
        {
          "label": "m6_long_forte_u.wav",
          "source": "VocalSet (Wilkins et al.)",
          "sourceUrl": "https://zenodo.org/records/1442513",
          "license": "CC BY 4.0",
          "analysisChanges": "Sustain excerpted, resampled to 22050 Hz mono, level-normalized; held out from fitting."
        }
      ],
      "coverage": "instrument",
      "contextual": false,
      "listening": [
        {
          "label": "Real fitted singer, MIDI 60",
          "audio": "vocal-sung-oo-low-development-singer.mp3"
        },
        {
          "label": "Real held-out singer (not used for fitting), MIDI 60",
          "audio": "vocal-sung-oo-low-held-out-singer.mp3"
        },
        {
          "label": "Bop v4 sung oo (baritone), MIDI 60",
          "audio": "vocal-sung-oo-low-v4.mp3"
        }
      ],
      "referenceImage": "vocal-sung-oo-low-reference.png",
      "referenceSpectrum": "vocal-sung-oo-low-spectrum.png"
    },
    {
      "id": "sung-ah-high",
      "name": "sung ah (soprano)",
      "family": "voice",
      "baseMidi": 72,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20.0,
      "versions": [
        {
          "version": "4.0.0",
          "title": "Measured realism",
          "description": "New. Soprano 'ah' with formant envelopes, vibrato and breath measured from a real singer.",
          "audio": "history-sung-ah-high-4.0.0.mp3",
          "settingsSha256": "04aabae6114f6ec252f3301d9e582242992ea30577becf9037f99344097ff362",
          "image": "history-sung-ah-high-4.0.0.png",
          "sha256": "42a634150afcc6594668ea3b7748dbc86608584bd0ae32b9ed76c9c4d2af4919"
        }
      ],
      "references": [
        {
          "label": "f9_long_forte_a.wav",
          "source": "VocalSet (Wilkins et al.)",
          "sourceUrl": "https://zenodo.org/records/1442513",
          "license": "CC BY 4.0",
          "analysisChanges": "Sustain excerpted, resampled to 22050 Hz mono, level-normalized; used to fit this voice."
        },
        {
          "label": "f7_long_forte_a.wav",
          "source": "VocalSet (Wilkins et al.)",
          "sourceUrl": "https://zenodo.org/records/1442513",
          "license": "CC BY 4.0",
          "analysisChanges": "Sustain excerpted, resampled to 22050 Hz mono, level-normalized; held out from fitting."
        }
      ],
      "coverage": "instrument",
      "contextual": false,
      "listening": [
        {
          "label": "Real fitted singer, MIDI 73",
          "audio": "vocal-sung-ah-high-development-singer.mp3"
        },
        {
          "label": "Real held-out singer (not used for fitting), MIDI 72",
          "audio": "vocal-sung-ah-high-held-out-singer.mp3"
        },
        {
          "label": "Bop v4 sung ah (soprano), MIDI 73",
          "audio": "vocal-sung-ah-high-v4.mp3"
        }
      ],
      "referenceImage": "vocal-sung-ah-high-reference.png",
      "referenceSpectrum": "vocal-sung-ah-high-spectrum.png"
    },
    {
      "id": "sung-oo-high",
      "name": "sung oo (soprano)",
      "family": "voice",
      "baseMidi": 72,
      "percussion": false,
      "seconds": 8,
      "rmsDb": -20.0,
      "versions": [
        {
          "version": "4.0.0",
          "title": "Measured realism",
          "description": "New. Soprano 'oo' with formant envelopes, vibrato and breath measured from a real singer.",
          "audio": "history-sung-oo-high-4.0.0.mp3",
          "settingsSha256": "78b58ebf59d45ea1610342517d7783cefd305cf3813f69f4f932ca2f65eae569",
          "image": "history-sung-oo-high-4.0.0.png",
          "sha256": "7ff381e492604d65ad0bcd12e5e69c559bf4952fa66d72f4f2383afbf2297d71"
        }
      ],
      "references": [
        {
          "label": "f9_long_forte_u.wav",
          "source": "VocalSet (Wilkins et al.)",
          "sourceUrl": "https://zenodo.org/records/1442513",
          "license": "CC BY 4.0",
          "analysisChanges": "Sustain excerpted, resampled to 22050 Hz mono, level-normalized; used to fit this voice."
        },
        {
          "label": "f7_long_forte_u.wav",
          "source": "VocalSet (Wilkins et al.)",
          "sourceUrl": "https://zenodo.org/records/1442513",
          "license": "CC BY 4.0",
          "analysisChanges": "Sustain excerpted, resampled to 22050 Hz mono, level-normalized; held out from fitting."
        }
      ],
      "coverage": "instrument",
      "contextual": false,
      "listening": [
        {
          "label": "Real fitted singer, MIDI 73",
          "audio": "vocal-sung-oo-high-development-singer.mp3"
        },
        {
          "label": "Real held-out singer (not used for fitting), MIDI 73",
          "audio": "vocal-sung-oo-high-held-out-singer.mp3"
        },
        {
          "label": "Bop v4 sung oo (soprano), MIDI 73",
          "audio": "vocal-sung-oo-high-v4.mp3"
        }
      ],
      "referenceImage": "vocal-sung-oo-high-reference.png",
      "referenceSpectrum": "vocal-sung-oo-high-spectrum.png"
    }
  ]
}