Official effect
Sweeping notch created by subtracting a moving band-pass slice out of the dry signal.
Rather than filtering everything through a resonant stage, this patch removes a modulated band-pass band from the original signal. `focus`, `motion`, and `rate` move the center and width of that subtractive band, so the sound behaves like a moving hollowed-out notch instead of a conventional wah.
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
Rather than filtering everything through a resonant stage, this patch removes a modulated band-pass band from the original signal. `focus`, `motion`, and `rate` move the center and width of that subtractive band, so the sound behaves like a moving hollowed-out notch instead of a conventional wah.
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.
Subtractive moving-notch filter built by removing a modulated band-pass band from the input.
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 of the subtractive notch band.
Moves the hollow region lower or higher in the spectrum.
Increases sweep depth, band width, and subtraction depth of the notch band.
Makes the notch wider, deeper, and more obvious.
Sets the speed of the internal LFO that moves the notch band.
Changes how quickly the hollow region sweeps through the spectrum.
Analysis
Current implementation is a distinct subtractive notch filter rather than a resonant wah variant.
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.