How It Works
Technical view
The current speaker-filter family is a straightforward output contour, not a fuller cabinet model. It routes each channel through `ef.speakerbp` with `width` moving the low-frequency bound and `tone` opening the upper cutoff, then applies a high-shelf trim before crossfading that filtered path with the dry stereo preview source through `mix`. The declared `motion` control is inactive, and the result then passes through the shared DC-blocking, output-gain, and soft-limiting stage.
- Stereo, Utility & Routing
- 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 the shared 19-sample right-channel delay before it is filtered by the speaker-style contour stage.
- 1internal picked-string demo phrase
- 2shared stereo spread with a short right-channel delay
- 3speaker-style band-pass contour
- 4post-filter high-shelf trim
- 5dry / filtered crossfade
- 6DC blocker
- 7output gain trim
- 8final tanh limiter
Preview source
An internally generated picked-string phrase is widened to stereo with the shared 19-sample right-channel delay before it is filtered by the speaker-style contour stage.
Effect core
Current speaker-style contour shared with Speaker Sim, crossfaded against the dry preview phrase.
Signal path
The static waveform and the live player both reflect this compiled signal chain.
- internal picked-string demo phrase
- shared stereo spread with a short right-channel delay
- speaker-style band-pass contour
- post-filter high-shelf trim
- dry / filtered crossfade
- 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: Crossfades or scales the current wet layer against the dry stereo preview source.
- output_gain_db: Applies final post-effect level trim after DC blocking and before the output limiter.
- width: Moves the lower bound of the speaker-style band-pass contour.
- motion: Declared in the shared control set but unused in the current preview code.
- tone: Raises the upper limit of the speaker-style contour and the post-filter high-shelf trim.
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
- channelFx
- phraseMono
- previewShiftSamples
Controls
Audible controls in this DSP
Crossfades or scales the current wet layer against the dry stereo preview source.
Higher settings make the processed layer more dominant relative to the dry phrase.
Applies final post-effect level trim after DC blocking and before the output limiter.
Matches loudness without changing the underlying effect structure.
Moves the lower bound of the speaker-style band-pass contour.
Higher settings shift the contour upward and change the perceived cabinet body.
Declared in the shared control set but unused in the current preview code.
Changing it currently has no effect on the sound.
Raises the upper limit of the speaker-style contour and the post-filter high-shelf trim.
Higher settings sound more open and less dark.
Analysis
Code-derived notes
Current implementation shares the exact same speaker-contour architecture with Speaker Sim. The declared motion control is inactive.
Active blocks
- demo
- fx
- outputStage
- leftDemo
- rightDemo
- channelFx
- phraseMono
- previewShiftSamples
- speakerFx
- 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/stereo-utility-routing/cab-filter.dsp
- Output stage: DC blocker -> output gain trim -> final tanh limiter
- Library position: 263