How It Works
Technical view
The current `Half-Speed Looper` does not replay captured audio at half rate. Instead, it mixes in a separately synthesized lower, longer phrase over the dry demo and offsets that synthetic layer on the right side with a short delay. `shape` raises the level of the slow phrase, while both `motion` and `tone` are inactive.
- Looper, Freeze & Glitch
- 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 as the dry source, and the current effect also layers a separately synthesized held or slowed phrase rather than capturing the live input into a loop buffer.
- 1internal picked-string demo phrase
- 2stereo spread with a short right-channel delay
- 3separately synthesized lower slow phrase
- 4short right-side offset on the synthetic layer
- 5dry / half-speed blend
- 6DC blocker
- 7output gain trim
- 8final tanh limiter
Preview source
An internally generated picked-string phrase is widened to stereo as the dry source, and the current effect also layers a separately synthesized held or slowed phrase rather than capturing the live input into a loop buffer.
Effect core
Dry phrase plus a separately synthesized lower slow phrase with a short right-side offset.
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
- separately synthesized lower slow phrase
- short right-side offset on the synthetic layer
- dry / half-speed blend
- 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 between the dry preview phrase and the synthesized lower slow phrase.
- output_gain_db: Applies final post-effect level trim after DC blocking and before the output limiter.
- motion: Declared in the shared control set but unused in the current preview code.
- shape: Raises the gain of the synthesized half-speed phrase before it is mixed with the dry source.
- tone: Declared in the shared control set but unused in the current preview code.
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
Blends between the dry preview phrase and the synthesized lower slow phrase.
Higher settings bring the half-speed-style layer forward over the dry source.
Applies final post-effect level trim after DC blocking and before the output limiter.
Matches loudness without changing the actual loop, freeze, or glitch structure.
Declared in the shared control set but unused in the current preview code.
Changing it currently has no effect on the sound.
Raises the gain of the synthesized half-speed phrase before it is mixed with the dry source.
Makes the slower lower layer more prominent.
Declared in the shared control set but unused in the current preview code.
Changing it currently has no effect on the sound.
Analysis
Code-derived notes
Current implementation uses a fixed synthetic lower phrase rather than replaying captured audio at half speed, and the declared motion and tone controls are inactive.
Active blocks
- demo
- fx
- outputStage
- leftDemo
- rightDemo
- leftFx
- rightFx
- phraseMono
- previewShiftSamples
- halfWet
- maxDelaySamples
- pickedVoice
- halfMono
- fund
- pickEnv
- ampEnv
- triggerAt
Inactive helpers
- synthVoice
- organVoice
- bellVoice
- softsat
- quantize
- combLP
- echoOnly
- diffuser
Warnings
No current warnings are attached to this effect.
Source
- library/looper-freeze-glitch/half-speed-looper.dsp
- Output stage: DC blocker -> output gain trim -> final tanh limiter
- Library position: 219