$ /Users/king/AI/stable-audio-3/optimized/mlx/.venv/bin/python logs/evidence/SFX-AUDIT-20261004-01/features.py
# cwd /Users/king/Desktop/Workspace/SRO/zoen
# exit 0

{
  "median_by_request": [
    {
      "id": "sfx-impact-light",
      "takes": 4,
      "rms_dbfs": -24.849,
      "spectral_centroid_hz_first_0_186ms": 457.68,
      "low_20_150_hz": 0.16,
      "mid_150_1000_hz": 0.66,
      "high_1000_plus_hz": 0.108,
      "active_span_ms_at_minus40db": 700.0
    },
    {
      "id": "sfx-impact-medium",
      "takes": 4,
      "rms_dbfs": -24.931,
      "spectral_centroid_hz_first_0_186ms": 442.59,
      "low_20_150_hz": 0.177,
      "mid_150_1000_hz": 0.671,
      "high_1000_plus_hz": 0.076,
      "active_span_ms_at_minus40db": 700.0
    },
    {
      "id": "sfx-impact-heavy",
      "takes": 4,
      "rms_dbfs": -24.178,
      "spectral_centroid_hz_first_0_186ms": 516.797,
      "low_20_150_hz": 0.102,
      "mid_150_1000_hz": 0.633,
      "high_1000_plus_hz": 0.126,
      "active_span_ms_at_minus40db": 700.0
    },
    {
      "id": "sfx-impact-massive",
      "takes": 4,
      "rms_dbfs": -26.797,
      "spectral_centroid_hz_first_0_186ms": 411.386,
      "low_20_150_hz": 0.241,
      "mid_150_1000_hz": 0.546,
      "high_1000_plus_hz": 0.075,
      "active_span_ms_at_minus40db": 1500.0
    },
    {
      "id": "sfx-material-fur",
      "takes": 4,
      "rms_dbfs": -22.838,
      "spectral_centroid_hz_first_0_186ms": 368.818,
      "low_20_150_hz": 0.306,
      "mid_150_1000_hz": 0.603,
      "high_1000_plus_hz": 0.068,
      "active_span_ms_at_minus40db": 600.0
    }
  ]
}