spec: "1.0"
id: "com.grooveforge.chorus"
name: "Chorus / Flanger"
version: "1.0.0"
type: effect

# Stereo chorus and flanger. The signal is mixed with a slightly-delayed,
# pitch-modulated copy of itself. At short delay + deep modulation: flanger.
# At longer delay + subtle modulation: chorus ensemble sound.
# Left/right LFOs are 180 degrees out of phase for a wide, immersive stereo image.

parameters:
  - id: rate
    paramId: 0
    name: "Rate"
    min: 0.1
    max: 10.0
    default: 0.5
    unit: "Hz"
  - id: depth
    paramId: 1
    name: "Depth"
    min: 0.0
    max: 1.0
    default: 0.5
  - id: delay
    paramId: 2
    name: "Delay"
    min: 5.0
    max: 50.0
    default: 20.0
    unit: "ms"
  - id: feedback
    paramId: 3
    name: "FB"
    min: 0.0
    max: 90.0
    default: 0.0
    unit: "%"
  - id: bpm_sync
    paramId: 4
    name: "BPM"
    min: 0.0
    max: 1.0
    default: 0.0
    type: toggle
  - id: beat_div
    paramId: 5
    name: "Div"
    min: 0.0
    max: 5.0
    default: 3.0
    type: selector
    options: ["2 bars", "1 bar", "1/2", "1/4", "1/8", "1/16"]
  - id: mix
    paramId: 6
    name: "Mix"
    min: 0.0
    max: 100.0
    default: 50.0
    unit: "%"

graph:
  nodes:
    - id: in
      type: audio_in
    - id: cho
      type: chorus
      params:
        rate:     { param: rate }
        depth:    { param: depth }
        delay:    { param: delay }
        feedback: { param: feedback }
        bpmSync:  { param: bpm_sync }
        beatDiv:  { param: beat_div }
        mix:      { param: mix }
    - id: out
      type: audio_out

  connections:
    - from: in.out
      to: cho.in
    - from: cho.out
      to: out.in

ui:
  groups:
    - label: "LFO"
      controls:
        - type: knob
          param: rate
        - type: knob
          param: depth
        - type: toggle
          param: bpm_sync
          label: "BPM"
        - type: selector
          param: beat_div
          label: "Div"
    - label: "Delay"
      controls:
        - type: knob
          param: delay
        - type: knob
          param: feedback
    - label: "Output"
      controls:
        - type: knob
          param: mix
        - type: vumeter
          source: out