{
  "checkedAt": "2026-10-15",
  "version": "1.65.0",
  "scope": "Bounded local tempo preparation, not whole-track or physical synchronization",
  "nativeBrowser": "Desktop Chrome via its native file chooser and actual built app",
  "nativeCases": [
    {
      "input": "Original 12-second 48 kHz stereo 160 BPM WAV",
      "windowSeconds": [
        0,
        12
      ],
      "firstCandidateBpm": 160.2,
      "alternativesBpm": [
        80,
        106.6
      ]
    },
    {
      "input": "Controlled 24-second VBR MP3, original 160 BPM rhythm",
      "windowSeconds": [
        0,
        24
      ],
      "firstCandidateBpm": 159.9,
      "alternativesBpm": [
        80,
        106.6
      ]
    },
    {
      "input": "12-second silence WAV",
      "result": "No clear pulse; no candidate selected"
    }
  ],
  "studioPath": {
    "explicitSameOriginReceipt": true,
    "arrivedPaused": true,
    "speakerMonitoring": false,
    "beforeBpm": 136,
    "appliedBpm": 160.2,
    "undoBpm": 136,
    "onlySavedSessionPathChangedOnApply": "timing.bpm",
    "savedSessionEqualAfterUndo": true
  },
  "networkDuringLocalFileAnalyses": {
    "postRequests": 0,
    "fileUploadRequests": 0
  },
  "signalUnitCases": {
    "steadyBpmCandidates": [
      72,
      96,
      120,
      136,
      142,
      160,
      178,
      196
    ],
    "extraRangeCases": [
      48,
      230,
      260
    ],
    "silenceSteadyToneAndDeterministicNoise": "No clear pulse",
    "variableTempo": "Bounded estimate only; no constant whole-track claim",
    "limits": "8\u201360 seconds; supported source PCM 8\u2013192 kHz"
  },
  "limitations": [
    "These engineering fixtures are not a representative music accuracy dataset.",
    "Half/double and other pulse ambiguities remain. Candidate score is not a confidence probability.",
    "No downbeat/beat map, time stretching, pitch/key estimate, live BPM following or physical latency correction.",
    "Native codec support, real projector timing, other devices and long shows require separate checks.",
    "Search indexing, rankings, AI citations and conversion effects are not established by these checks."
  ],
  "additionalPcmChecks": {
    "source": "Previously published music with known 142 BPM reference",
    "decoder": "ffmpeg PCM for pure estimator, not browser-decoder acceptance",
    "windowsSeconds": [
      [
        0,
        32
      ],
      [
        30,
        62
      ],
      [
        64,
        96
      ]
    ],
    "firstCandidateBpm": [
      142.1,
      142.1,
      142.1
    ],
    "note": "Three sections of one song, not a representative dataset"
  },
  "appliesThroughVersion": "1.65.2"
}