How It Works
Technical view
The current doubler family still relies on one separately synthesized auxiliary pitch phrase rather than real-time pitch shifting of the dry source. On top of that synthetic layer, it adds short dry-delay taps controlled by `blend`, so the extra width comes from small timing offsets and a fixed prewritten harmony phrase rather than an adaptive detune engine. There is no real-time micro-detune process on the dry source; the widening comes from short dry delays plus the fixed auxiliary phrase.
- Pitch, Harmony & Detune
- 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; the current pitch family mostly layers separately synthesized picked-string phrases over that demo rather than pitch-shifting the dry input in real time.
- 1internal picked-string demo phrase
- 2stereo spread with a short right-channel delay
- 3separately synthesized auxiliary pitch phrase
- 4short right-side offset on the synthetic layer
- 5high-shelf shaping on the synthetic layer
- 6short dry-channel doubling delays
- 7dry / synthetic / doubler blend
- 8DC blocker
- 9output gain trim
- 10final tanh limiter
Preview source
An internally generated picked-string phrase is widened to stereo as the dry source; the current pitch family mostly layers separately synthesized picked-string phrases over that demo rather than pitch-shifting the dry input in real time.
Effect core
Dry phrase plus one separately synthesized auxiliary pitch phrase and short dry-channel doubler delays.
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 auxiliary pitch phrase
- short right-side offset on the synthetic layer
- high-shelf shaping on the synthetic layer
- short dry-channel doubling delays
- dry / synthetic / doubler 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 stereo preview phrase, the synthesized pitch layer, and the short delayed doubler taps.
- output_gain_db: Applies final post-effect level trim after DC blocking and before the output limiter.
- voice: Raises the level of the synthesized pitch layer before it is mixed with the dry source.
- width: Adjusts the high-shelf shaping on the synthesized pitch layer and its offset right-channel copy.
- blend: Scales the short dry-delay taps that are added as a widening or doubling layer.
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 stereo preview phrase, the synthesized pitch layer, and the short delayed doubler taps.
Lower settings keep the dry phrase dominant; higher settings bring up both the synthetic layer and the widening doubles.
Applies final post-effect level trim after DC blocking and before the output limiter.
Matches loudness without changing the actual pitch-layer structure.
Raises the level of the synthesized pitch layer before it is mixed with the dry source.
Makes the auxiliary octave or detuned voice more prominent.
Adjusts the high-shelf shaping on the synthesized pitch layer and its offset right-channel copy.
Makes the auxiliary layer darker at low settings and brighter and more open at high settings.
Scales the short dry-delay taps that are added as a widening or doubling layer.
Adds more chorus-like spread and doubled body as it increases.
Analysis
Code-derived notes
Current implementation shares the same single auxiliary-voice plus short doubler-delay architecture across MicroPitch, 12-String Doubler, and Detune Doubler. MicroPitch does not yet detune the live input by small cents offsets.
Active blocks
- demo
- fx
- outputStage
- leftDemo
- rightDemo
- leftFx
- rightFx
- phraseMono
- previewShiftSamples
- pitchLeft
- maxDelaySamples
- pitchRight
- pickedVoice
- pitchLayer1
- 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/pitch-harmony-detune/micropitch.dsp
- Output stage: DC blocker -> output gain trim -> final tanh limiter
- Library position: 196