{
  "description": "Endless sweep: phaser or flanger notches that keep rising, or keep falling, forever without ever resetting.",
  "id": "org.sournd.modulation.stairwhorl",
  "kind": "modulation",
  "latency": 0,
  "name": "Stairwhorl",
  "params": [
    {
      "default": 0.08,
      "key": "rate_hz",
      "max": 2.0,
      "min": 0.01,
      "name": "Rate",
      "taper": "log",
      "unit": "Hz",
      "abi_id": 0
    },
    {
      "default": 1.0,
      "key": "direction",
      "max": 1.0,
      "min": 0.0,
      "name": "Direction",
      "taper": "linear",
      "unit": "",
      "abi_id": 1
    },
    {
      "default": 0.0,
      "key": "mode",
      "max": 1.0,
      "min": 0.0,
      "name": "Mode",
      "taper": "linear",
      "unit": "",
      "abi_id": 2
    },
    {
      "default": 6.0,
      "key": "range_oct",
      "max": 8.0,
      "min": 2.0,
      "name": "Range",
      "taper": "linear",
      "unit": "oct",
      "abi_id": 3
    },
    {
      "default": 25.0,
      "key": "stereo",
      "max": 100.0,
      "min": 0.0,
      "name": "Stereo",
      "taper": "linear",
      "unit": "%",
      "abi_id": 4
    },
    {
      "default": 50.0,
      "key": "mix",
      "max": 100.0,
      "min": 0.0,
      "name": "Mix",
      "taper": "linear",
      "unit": "%",
      "abi_id": 5
    }
  ],
  "provenance": "Original sOURnd design blending general techniques: several exponentially swept phaser and flanger voices with evenly staggered start points, raised-cosine crossfade windows that sum to a constant (a Shepard-style illusion), Hermite-interpolated delay reads and a stereo sweep offset.",
  "styles": [
    "barber-pole",
    "phaser",
    "flanger"
  ],
  "tail_seconds": 0.1,
  "version": "1.0.0",
  "tier": "paid",
  "listed": true,
  "category": "modulation",
  "url": "https://sournd.com/engines/stairwhorl/",
  "price": {
    "cents": 299,
    "currency": "GBP"
  },
  "markdown_url": "https://sournd.com/engines/stairwhorl/index.md",
  "icon_url": "https://sournd.com/engines/stairwhorl/icon.svg",
  "banner_url": "https://sournd.com/engines/stairwhorl/banner.svg",
  "story": "Rising forever, never resetting."
}