Multi-fx m (auto-filter, phaser, delay)

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The ‘m’ in ‘multi-fx m’ is for ‘movement/mangle/morph’.

multi-fx m.axp (75.1 KB)

This patch is a multi-effects unit with an auto-filter, a stereo phaser, and a modulatable stereo delay.

To get started: turn down the output volume knob, connect a sound source to the Gills’ audio input, connect your headphones/speakers to Gills’ audio output, and play some audio while slowly turning up the volume knob.

If there’s no audio, check your sound source, your cables, and the input/output volume knobs.

There are 3 pages in this patch. Use button S3 to switch pages.

  1. Auto-filter
  2. Stereo Phaser
  3. Stereo Delay

The encoder adjusts the global dry/wet mix. LED L1 = wet signal. LED L2 = dry signal.

Button S4 has different functions on each page.

Knob 1 on every page is the dry/wet mix of the individual effects.

Page 1: Auto-filter

Inspired by Ableton’s Auto-Filter, the audio gets distorted, wave-folded, and split into 2 low-pass filters: a 2nd order oversampled filter and a state-variable filter. Button L4 toggles the resonance mode for the filter.

  1. Dry/wet mix
  2. Filter cutoff
  3. Filter resonance
  4. Env follower: How much the cutoff frequency follows the incoming audio
  5. Env smooth: Smooths the audio envelope
  6. LFO rate for auto-filter
  7. LFO amount for auto-filter
  8. OS/SVF mix: blends between the 2nd order oversampled filter and the state-variable filter.
  9. Distort mix
  10. Wavefold

Page 2: Phaser

A stereo phaser. Button L4 changes the routing between filter->phaser and phaser->filter.

  1. Dry/wet mix
  2. Pre-delay
  3. Feedback
  4. Stages
  5. Env amount: How much the phase follows the incoming audio
  6. LFO rate for phaser
  7. LFO amount for phaser
  8. Left phase
  9. Right phase
  10. LFO fold: wavefolds the LFO for phaser

Page 3: Stereo Delay

Time-modulatable stereo delay with filter control. You must turn the ‘Dry Wet’ knob (the 1st knob on this page) in order to hear any effect. Button L4 turns on ping pong mode.

  1. Dry wet: How much of the delay effect you can hear.
  2. LFO rate: rate of LFO applied to delay. Higher values (while turning ‘LFO amount’) will give you vibrato.
  3. LFO amount: amount of LFO applied to delay. Higher values give you stronger vibrato, chorus, or flanger effects.
  4. Env mod direction: Audio envelope modulation direction. It reads the signal of audio input to modulate delay time. Turn clockwise to affect delay time normally, turn counter-clockwise to affect inversely.
  5. Env mod amt: Amount of audio envelope modulation applied to delay time. Turn all the way counter-clockwise for no effect. Slowly turn clockwise to hear the incoming audio affecting the delay time.
  6. Left time: Delay time for left channel.
  7. Right time: Delay time for right channel.
  8. Feedback: Delay feedback. If nothing’s playing and there’s still sound coming out of your Ksoloti, turn this knob down. It can self-resonate with nothing patched to it.
  9. Filter freq: A base filter is applied to the delay line. Turn this up if you want less bass in your delay signal.
  10. Filter width: Width of the base filter.
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