{
  "description": "Loudness meter: momentary (400 ms), short-term (3 s) and gated integrated loudness in LUFS, loudness range and 4x-oversampled true peak, against a target. Audio passes untouched.",
  "id": "org.sournd.analysis.heft",
  "kind": "analysis",
  "latency": 0,
  "name": "Heft",
  "params": [
    {
      "default": -14.0,
      "key": "target_lufs",
      "max": 0.0,
      "min": -40.0,
      "name": "Target",
      "taper": "linear",
      "unit": "LUFS",
      "abi_id": 0
    }
  ],
  "provenance": "Original sOURnd meter implementing the published broadcast loudness method from its description: frequency weighting, 400 ms blocks with 75% overlap, absolute and relative gating, percentile loudness range and oversampled peak detection; bounded-memory histograms are its own design.",
  "readouts": [
    {
      "count": 1,
      "key": "momentary_lufs",
      "kind": "level",
      "max": 30.0,
      "min": -120.0,
      "name": "Momentary",
      "unit": "LUFS"
    },
    {
      "count": 1,
      "key": "short_term_lufs",
      "kind": "level",
      "max": 30.0,
      "min": -120.0,
      "name": "Short-term",
      "unit": "LUFS"
    },
    {
      "count": 1,
      "key": "integrated_lufs",
      "kind": "level",
      "max": 30.0,
      "min": -120.0,
      "name": "Integrated",
      "unit": "LUFS"
    },
    {
      "count": 1,
      "key": "range_lu",
      "kind": "value",
      "max": 100.0,
      "min": 0.0,
      "name": "Loudness range",
      "unit": "LU"
    },
    {
      "count": 1,
      "key": "true_peak_l",
      "kind": "level",
      "max": 30.0,
      "min": -120.0,
      "name": "True peak L",
      "unit": "dBTP"
    },
    {
      "count": 1,
      "key": "true_peak_r",
      "kind": "level",
      "max": 30.0,
      "min": -120.0,
      "name": "True peak R",
      "unit": "dBTP"
    },
    {
      "count": 1,
      "key": "to_target_lu",
      "kind": "value",
      "max": 70.0,
      "min": -150.0,
      "name": "Integrated minus target",
      "unit": "LU"
    }
  ],
  "styles": [
    "loudness"
  ],
  "tail_seconds": 0.0,
  "version": "1.0.0",
  "tier": "paid",
  "listed": true,
  "category": "analysis",
  "url": "https://sournd.com/engines/heft/",
  "price": {
    "cents": 299,
    "currency": "GBP"
  },
  "markdown_url": "https://sournd.com/engines/heft/index.md",
  "icon_url": "https://sournd.com/engines/heft/icon.svg",
  "banner_url": "https://sournd.com/engines/heft/banner.svg",
  "story": "The true weight of loud."
}