{
  "schema": "codec_listening_assets_v1",
  "created_at": "2026-09-01T00:44:30.985858+00:00",
  "selection": "first 10 unique benchmark clip IDs in measurement-file order for each cohort",
  "playback": "All conditions include mono 44.1 kHz PCM16 WAV, avoiding browser codec support differences and extra lossy transcoding.",
  "conditions": [
    "reference",
    "dac",
    "opus_16k",
    "opus_48k",
    "opus_64k",
    "mp3_128k"
  ],
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    "model_bitrate": "8kbps",
    "checkpoint_sha256": "a88eed82a7024ccc1facdb1e605c4c2f99281c8118c22c9895ffa846d8fb61aa"
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