{
  "result": "PASS",
  "meaning": "Independent file parsing/comparison passed; not an accuracy pass",
  "onsetToleranceSeconds": 0.15,
  "pitchRule": "exact semitone plus one-to-one nearest eligible onset; no duration condition; octave candidates kept separate",
  "polyphonyRule": "key-held only, note-off before note-on at same time; pedal decay not counted",
  "annotationUncertainty": {
    "method": "First sustained10ms stereo RMS>=0.004 minus first MIDI key-on; offset fixed before evaluating output pitches; subsequent8groups validate only",
    "audioFirstRmsBinSeconds": 2.28,
    "firstMidiKeyOnSeconds": 2.91375,
    "audioMinusMidiSeconds": -0.63375,
    "validation": [
      {
        "expectedAudioOnset": 2.94,
        "peakRmsRiseBin": 2.95,
        "residualSeconds": 0.010000000000000231
      },
      {
        "expectedAudioOnset": 3.15125,
        "peakRmsRiseBin": 3.18,
        "residualSeconds": 0.028750000000000053
      },
      {
        "expectedAudioOnset": 3.635,
        "peakRmsRiseBin": 3.65,
        "residualSeconds": 0.015000000000000124
      },
      {
        "expectedAudioOnset": 4.4925,
        "peakRmsRiseBin": 4.49,
        "residualSeconds": -0.0024999999999995026
      },
      {
        "expectedAudioOnset": 5.04,
        "peakRmsRiseBin": 5.04,
        "residualSeconds": 0.0
      },
      {
        "expectedAudioOnset": 5.69125,
        "peakRmsRiseBin": 5.7,
        "residualSeconds": 0.008750000000000036
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      {
        "expectedAudioOnset": 5.8975,
        "peakRmsRiseBin": 5.9,
        "residualSeconds": 0.002500000000000391
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      {
        "expectedAudioOnset": 6.4225,
        "peakRmsRiseBin": 6.43,
        "residualSeconds": 0.007499999999999396
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    ],
    "uncertainty": "10ms bin resolution plus threshold/attack uncertainty; nominal hardware key-held notes, not human audio annotation; no per-note alignment optimization"
  },
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      "referenceMaxKeyHeldPolyphony": 3,
      "outputMaxPolyphony": 0,
      "exactPitchOnsetMatches150ms": 0,
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      "missedReferenceEvents": 31,
      "unmatchedOutputEvents": 0,
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      "exportedAboveReferenceMax": 0
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    "piano-mode2": {
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      "referenceMaxKeyHeldPolyphony": 3,
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      "unmatchedOutputEvents": 2,
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      "exportedAboveReferenceMax": 0
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}