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Official effect

Mod Filter

Currently the same stereo resonant low-pass wobble core as Stereo Wobble.

The current wobble filter drives left and right resonant low-pass centers from two slow offset LFOs and mixes those filtered branches back with the dry source. `depth` widens the sweep range, `rate` controls the motion speed, and `tone` raises the filter resonance, so `Mod Filter` is presently the same code path as `Stereo Wobble`.

  • Chorus, Phaser, Flanger & Motion
  • Library #123
  • Preview 8s

Waveform preview

Static peaks come from the compiled FAUST preview render. The live scope is drawn from the browser playback output in real time.

Timeline
0:00 / 0:08
Source
Compiled browser preview
Live oscilloscope from the browser playback output.AnalyserNode keeps the signal path unchanged while exposing the waveform.

How It Works

Technical view

The current wobble filter drives left and right resonant low-pass centers from two slow offset LFOs and mixes those filtered branches back with the dry source. `depth` widens the sweep range, `rate` controls the motion speed, and `tone` raises the filter resonance, so `Mod Filter` is presently the same code path as `Stereo Wobble`.

  • Chorus, Phaser, Flanger & Motion
  • band-pass filtering
  • waveshaping / saturation
  • delay processing
  • oscillator / LFO modulation
  • DC blocking

Signal Path

Compiled preview chain

Preview source: An internally generated picked-string phrase is widened to stereo with a 19-sample right-channel delay and slight left/right shelf-EQ offsets before it hits the modulation core.

  1. 1internal picked-string demo phrase
  2. 2stereo spread with a short right-channel delay
  3. 3dual modulated resonant low-pass filters
  4. 4dry / wet mix
  5. 5DC blocker
  6. 6output gain trim
  7. 7final tanh limiter

Preview source

An internally generated picked-string phrase is widened to stereo with a 19-sample right-channel delay and slight left/right shelf-EQ offsets before it hits the modulation core.

Effect core

Stereo resonant low-pass wobble with independently modulated filter centers.

Signal path

The static waveform and the live player both reflect this compiled signal chain.

  • internal picked-string demo phrase
  • stereo spread with a short right-channel delay
  • dual modulated resonant low-pass filters
  • dry / wet mix
  • DC blocker
  • output gain trim
  • final tanh limiter

Controls that matter

These are the currently active controls detected in the FAUST source for this effect.

  • mix: Blends the untouched stereo preview source with the processed path after the modulation core.
  • output_gain_db: Applies final post-effect level trim after DC blocking and before the output limiter.
  • depth: Widens the sweep range of the left and right resonant low-pass centers.
  • rate: Sets the speeds of the slow offset LFOs that move the filter centers.
  • tone: Raises the resonance of the low-pass filters.

Code-backed analysis

The generated description is tied to the active helper blocks and routing found in the current DSP.

  • demo
  • fx
  • outputStage
  • leftDemo
  • rightDemo
  • leftFx
  • rightFx
  • phraseMono

Controls

Audible controls in this DSP

  • mix

    Active

    Blends the untouched stereo preview source with the processed path after the modulation core.

    Lower settings keep more direct attack and body; higher settings push the effected motion further forward.

  • output_gain_db

    Active

    Applies final post-effect level trim after DC blocking and before the output limiter.

    Matches loudness without changing the actual modulation or filtering structure.

  • depth

    Active

    Widens the sweep range of the left and right resonant low-pass centers.

    Makes the wobble travel farther and sound more exaggerated.

  • rate

    Active

    Sets the speeds of the slow offset LFOs that move the filter centers.

    Changes how quickly the wobble evolves.

  • tone

    Active

    Raises the resonance of the low-pass filters.

    Makes the sweep rounder and more vocal as it increases.

Analysis

Code-derived notes

Current implementation shares the same resonant low-pass wobble core between Stereo Wobble and Mod Filter.

Active blocks

  • demo
  • fx
  • outputStage
  • leftDemo
  • rightDemo
  • leftFx
  • rightFx
  • phraseMono
  • previewShiftSamples
  • centerA
  • centerB
  • pickedVoice
  • fund
  • pickEnv
  • ampEnv
  • triggerAt
  • maxDelaySamples

Inactive helpers

  • synthVoice
  • organVoice
  • bellVoice
  • softsat
  • quantize
  • combLP
  • echoOnly
  • diffuser

Warnings

No current warnings are attached to this effect.

Source

  • library/chorus-phaser-flanger-motion/mod-filter.dsp
  • Output stage: DC blocker -> output gain trim -> final tanh limiter
  • Library position: 123

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