draft: true
Name: Krell
short-description: Krell
Language: Blackbird Lua
Creator: Benjamin Reily
Version: 1.0
Status: Beta
date-created: 2026-02-26
date-updated: 2026-02-26

tags:
  - generative
  - krell
  - dual-channel
  - envelope
  - random-pitch

summary: |
  Krell outputs two independent channels of random pitch CV and looping AD envelopes, each with pulse outputs
  at end of cycle. Main sets overall tendency toward longer/shorter envelopes, X sets left-channel envelope timing,
  and Y sets right-channel timing. Switch up quantizes pitch to octaves, middle uses chromatic quantization,
  and switch down cycles note range between roughly one and three octaves.

panel:
  inputs:
    - id: CVIn1
      name: Left Pitch Sample Input
      description: When connected, sampled-and-held then quantized onto CV Out 1 instead of internal random pitch
    - id: CVIn2
      name: Right Pitch Sample Input
      description: When connected, sampled-and-held then quantized onto CV Out 2 instead of internal random pitch
  outputs:
    - id: AudioOut1
      name: Left AD Envelope
      description: Looping attack-decay envelope output for left channel
    - id: AudioOut2
      name: Right AD Envelope
      description: Looping attack-decay envelope output for right channel
    - id: CVOut1
      name: Left Pitch CV
      description: Random or sampled-and-held quantized pitch output
    - id: CVOut2
      name: Right Pitch CV
      description: Random or sampled-and-held quantized pitch output
    - id: PulseOut1
      name: Left End-of-Cycle Pulse
      description: Pulse at end of each left envelope cycle
    - id: PulseOut2
      name: Right End-of-Cycle Pulse
      description: Pulse at end of each right envelope cycle

controls:
  knobs:
    - when: { z: any }
      main:
        name: Global Time/Mood
        description: Global multiplier for envelope lengths and activity feel
      x:
        name: Left Envelope Length
        description: Controls left channel envelope timing range
      y:
        name: Right Envelope Length
        description: Controls right channel envelope timing range
  switches:
    - id: Z
      up:
        name: Octave Quantize
        description: Quantizes pitch outputs to octave-only steps
      middle:
        name: Chromatic Quantize
        description: Quantizes pitch outputs to chromatic notes
      down:
        name: Range Cycle
        description: Cycles random note range between approximately one to three octaves