How It Works
Technical view
The current preview uses the same low-gain topology as Clean Boost: high-pass cleanup, a small low shelf, restrained 930 Hz emphasis, one gentle tanh stage, and a mildly open high shelf after clipping. It reads as a broad clean push today rather than a classic narrow-band treble-booster circuit, so the brighter identity mostly comes from how far `tone` opens the post-drive shelf.
- Drive, Boost & Saturation
- 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 reaches the active drive path.
- 1internal picked-string demo phrase
- 2stereo spread with a short right-channel delay
- 3high-pass cleanup
- 4modest low-shelf and light 930 Hz contour shaping
- 5gentle single tanh saturation stage
- 6open post-drive high-shelf recovery
- 7dry / wet mix
- 8DC blocker
- 9output gain trim
- 10final 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 reaches the active drive path.
Effect core
Low-gain single-stage tanh boost currently sharing the Clean Boost core with open high-shelf recovery.
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
- high-pass cleanup
- modest low-shelf and light 930 Hz contour shaping
- gentle single tanh saturation stage
- open post-drive high-shelf recovery
- 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 clean stereo preview source with the low-gain boost path.
- output_gain_db: Applies final output trim after DC blocking and before the limiter.
- drive: Raises the input multiplier into a gentle single tanh stage.
- tone: Adjusts the relatively open post-drive high shelf.
- contour: Shapes the low shelf and a restrained 930 Hz emphasis ahead of saturation.
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
- driveTone
- phraseMono
- previewShiftSamples
Controls
Audible controls in this DSP
Blends the clean stereo preview source with the low-gain boost path.
Lower settings preserve more direct attack; higher settings lean further into the boosted voice.
Applies final output trim after DC blocking and before the limiter.
Sets overall loudness without changing the actual boost structure.
Raises the input multiplier into a gentle single tanh stage.
Adds a little more compression and harmonic edge, but stays in low-gain territory.
Adjusts the relatively open post-drive high shelf.
Adds brightness and presence or smooths the top without changing the core low-gain behavior.
Shapes the low shelf and a restrained 930 Hz emphasis ahead of saturation.
Adds body and a little forwardness without turning the boost into a full overdrive.
Analysis
Code-derived notes
Reviewed against the current DSP. The current preview shares the same active boost core as Clean Boost rather than a dedicated treble-booster filter structure.
Active blocks
- demo
- fx
- outputStage
- leftDemo
- rightDemo
- driveTone
- phraseMono
- previewShiftSamples
- softsat
- pickedVoice
- fund
- pickEnv
- ampEnv
- triggerAt
- maxDelaySamples
Inactive helpers
- synthVoice
- organVoice
- bellVoice
- quantize
- combLP
- echoOnly
- diffuser
Warnings
No current warnings are attached to this effect.
Source
- library/drive-boost-saturation/treble-boost.dsp
- Output stage: DC blocker -> output gain trim -> final tanh limiter
- Library position: 6