Official effect
Resonant low-pass wah with an LFO-driven sweep for a steady vocal-style filter arc.
The current wah core modulates a resonant low-pass center with a sine LFO whose speed is set by `rate`, while `motion` raises both sweep depth and resonance. A post-filter high shelf tied to `focus` restores some top-end after the sweep, so the result behaves like a compact auto-wah rather than a foot-controlled rocker.
Static peaks come from the compiled FAUST preview render. The live scope is drawn from the browser playback output in real time.
How It Works
The current wah core modulates a resonant low-pass center with a sine LFO whose speed is set by `rate`, while `motion` raises both sweep depth and resonance. A post-filter high shelf tied to `focus` restores some top-end after the sweep, so the result behaves like a compact auto-wah rather than a foot-controlled rocker.
Signal Path
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 filter core.
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 filter core.
Sine-LFO-modulated resonant low-pass filter with post-filter high-shelf tone shaping.
The static waveform and the live player both reflect this compiled signal chain.
These are the currently active controls detected in the FAUST source for this effect.
The generated description is tied to the active helper blocks and routing found in the current DSP.
Controls
Blends the untouched stereo preview source with the filtered path after the effect core.
Lower settings preserve more dry attack and full-band tone; higher settings emphasize the filter treatment.
Applies final post-effect level trim after DC blocking and before the output limiter.
Matches loudness without changing the filter behavior itself.
Sets the base center frequency of the resonant low-pass sweep and also shifts the post-filter high shelf.
Moves the wah voice lower or higher and changes how open the top end feels afterward.
Increases the sweep depth and resonance of the low-pass filter.
Makes the effect more vocal, deeper, and more resonant as it rises.
Sets the speed of the internal sinusoidal sweep that modulates the filter center.
Changes how quickly the wah or filter cycles through its sweep.
Analysis
Current implementation shares the same LFO-driven resonant low-pass wah core as Cry Filter and Q-Filter.
No current warnings are attached to this effect.
More In Filter, Wah & Envelope
Each effect page uses the same generated description pipeline and compiled waveform preview assets.