{
  "description": "Passive-style program EQ: boost and attenuate the lows at the same frequency for a deep, tight bottom with a dip above it, a broad-to-sharp high boost, a separate high attenuation shelf, and a gentle output stage that thickens as it is driven.",
  "id": "org.sournd.eq.fournel",
  "kind": "eq",
  "latency": 15,
  "name": "Fournel",
  "params": [
    {
      "default": 60.0,
      "key": "low_freq_hz",
      "max": 120.0,
      "min": 20.0,
      "name": "Low frequency",
      "taper": "log",
      "unit": "Hz",
      "abi_id": 0
    },
    {
      "default": 0.0,
      "key": "low_boost_db",
      "max": 12.0,
      "min": 0.0,
      "name": "Low boost",
      "taper": "linear",
      "unit": "dB",
      "abi_id": 1
    },
    {
      "default": 0.0,
      "key": "low_atten_db",
      "max": 12.0,
      "min": 0.0,
      "name": "Low attenuate",
      "taper": "linear",
      "unit": "dB",
      "abi_id": 2
    },
    {
      "default": 8000.0,
      "key": "high_freq_hz",
      "max": 16000.0,
      "min": 3000.0,
      "name": "High boost frequency",
      "taper": "log",
      "unit": "Hz",
      "abi_id": 3
    },
    {
      "default": 0.0,
      "key": "high_boost_db",
      "max": 16.0,
      "min": 0.0,
      "name": "High boost",
      "taper": "linear",
      "unit": "dB",
      "abi_id": 4
    },
    {
      "default": 50.0,
      "key": "bandwidth_pct",
      "max": 100.0,
      "min": 0.0,
      "name": "Bandwidth (sharp to broad)",
      "taper": "linear",
      "unit": "%",
      "abi_id": 5
    },
    {
      "default": 10000.0,
      "key": "high_atten_hz",
      "max": 20000.0,
      "min": 5000.0,
      "name": "High attenuate frequency",
      "taper": "log",
      "unit": "Hz",
      "abi_id": 6
    },
    {
      "default": 0.0,
      "key": "high_atten_db",
      "max": 16.0,
      "min": 0.0,
      "name": "High attenuate",
      "taper": "linear",
      "unit": "dB",
      "abi_id": 7
    },
    {
      "default": 0.0,
      "key": "drive_pct",
      "max": 100.0,
      "min": 0.0,
      "name": "Output drive",
      "taper": "linear",
      "unit": "%",
      "abi_id": 8
    },
    {
      "default": 0.0,
      "key": "output_db",
      "max": 12.0,
      "min": -12.0,
      "name": "Output",
      "taper": "linear",
      "unit": "dB",
      "abi_id": 9
    }
  ],
  "provenance": "Original sOURnd design modelling the general behaviour of passive program equalisers mathematically: a steep second-order boost shelf against a shallow first-order attenuation shelf centred higher, an RBJ bell with bandwidth control, a high shelf cut, and a 2x oversampled asymmetric soft saturator blended in by drive.",
  "styles": [
    "passive",
    "shelf"
  ],
  "tail_seconds": 0.3,
  "version": "1.0.0",
  "tier": "paid",
  "listed": true,
  "category": "eq",
  "url": "https://sournd.com/engines/fournel/",
  "price": {
    "cents": 299,
    "currency": "GBP"
  },
  "markdown_url": "https://sournd.com/engines/fournel/index.md",
  "icon_url": "https://sournd.com/engines/fournel/icon.svg",
  "banner_url": "https://sournd.com/engines/fournel/banner.svg",
  "story": "Deep heat, fired low and tight."
}