{
  "description": "Pedal wah: one vocal, resonant peak rocked from heel to toe by the position control (map it to an expression pedal), or pushed by your playing for auto-wah. Hard notes squash the peak into a throaty honk.",
  "id": "org.sournd.filter.treadle",
  "kind": "filter",
  "latency": 0,
  "name": "Treadle",
  "params": [
    {
      "default": 50.0,
      "key": "position",
      "max": 100.0,
      "min": 0.0,
      "name": "Position",
      "taper": "linear",
      "unit": "%",
      "abi_id": 0
    },
    {
      "default": 0.0,
      "key": "env_amount",
      "max": 100.0,
      "min": -100.0,
      "name": "Auto amount",
      "taper": "linear",
      "unit": "%",
      "abi_id": 1
    },
    {
      "default": 0.0,
      "key": "sensitivity_db",
      "max": 24.0,
      "min": -24.0,
      "name": "Sensitivity",
      "taper": "linear",
      "unit": "dB",
      "abi_id": 2
    },
    {
      "default": 8.0,
      "key": "env_attack_ms",
      "max": 100.0,
      "min": 1.0,
      "name": "Auto attack",
      "taper": "log",
      "unit": "ms",
      "abi_id": 3
    },
    {
      "default": 180.0,
      "key": "env_release_ms",
      "max": 1000.0,
      "min": 20.0,
      "name": "Auto release",
      "taper": "log",
      "unit": "ms",
      "abi_id": 4
    },
    {
      "default": 380.0,
      "key": "heel_hz",
      "max": 800.0,
      "min": 200.0,
      "name": "Heel",
      "taper": "log",
      "unit": "Hz",
      "abi_id": 5
    },
    {
      "default": 2200.0,
      "key": "toe_hz",
      "max": 4000.0,
      "min": 1000.0,
      "name": "Toe",
      "taper": "log",
      "unit": "Hz",
      "abi_id": 6
    },
    {
      "default": 60.0,
      "key": "resonance_pct",
      "max": 100.0,
      "min": 0.0,
      "name": "Resonance",
      "taper": "linear",
      "unit": "%",
      "abi_id": 7
    },
    {
      "default": 50.0,
      "key": "voice",
      "max": 100.0,
      "min": 0.0,
      "name": "Voice",
      "taper": "linear",
      "unit": "%",
      "abi_id": 8
    },
    {
      "default": 100.0,
      "key": "mix",
      "max": 100.0,
      "min": 0.0,
      "name": "Mix",
      "taper": "linear",
      "unit": "%",
      "abi_id": 9
    },
    {
      "default": 0.0,
      "key": "output_db",
      "max": 12.0,
      "min": -24.0,
      "name": "Output",
      "taper": "linear",
      "unit": "dB",
      "abi_id": 10
    }
  ],
  "provenance": "Original sOURnd design blending general techniques: a trapezoidal state-variable resonator with soft saturation on its band integrator, position-dependent Q, a log-frequency sweep between two corner frequencies, an envelope follower on the sweep and a low-pass blend under the peak.",
  "styles": [
    "wah",
    "envelope-filter",
    "band-pass"
  ],
  "tail_seconds": 0.2,
  "version": "1.0.0",
  "tier": "paid",
  "listed": true,
  "category": "filter",
  "url": "https://sournd.com/engines/treadle/",
  "price": {
    "cents": 299,
    "currency": "GBP"
  },
  "markdown_url": "https://sournd.com/engines/treadle/index.md",
  "icon_url": "https://sournd.com/engines/treadle/icon.svg",
  "banner_url": "https://sournd.com/engines/treadle/banner.svg",
  "story": "Heel to toe, a singing peak."
}