High-performance Chorus / Flanger effect with LFO-modulated delay lines. More...
#include "../Core/RingBuffer.h"#include "../Core/Oscillator.h"#include "../Core/DryWetMixer.h"#include "../Core/DspMath.h"#include "../Core/AudioSpec.h"#include "../Core/AudioBuffer.h"#include "../Core/StateBlob.h"#include <algorithm>#include <array>#include <atomic>#include <cmath>#include <cstddef>#include <cstdint>#include <vector>
Go to the source code of this file.
Classes | |
| class | dspark::Chorus< T > |
| Multi-voice chorus/flanger with true stereo spread and smooth parameter handling. More... | |
Namespaces | |
| namespace | dspark |
| Main namespace for the DSPark framework. | |
Detailed Description
High-performance Chorus / Flanger effect with LFO-modulated delay lines.
Creates the classic chorus effect by mixing the dry signal with delayed copies whose delay time is modulated by LFOs. Multiple voices with phase-offset LFOs create a rich, wide stereo field.
Engineered for real-time performance:
- No transcendental functions (sin, cos) in the audio hot path (the LFOs and the feedback saturation use polynomial approximations). The inner loop itself is a serial recursion (feedback plus parameter smoothing), so it does not vectorize; the per-sample work is branch-light instead.
- Sample-rate-invariant one-pole parameter smoothing for zipper-free automation.
- Tape-style feedback saturation prevents digital clipping.
Threading: prepare() belongs to the setup thread (allocates; never call it concurrently with processing). processBlock() and reset() belong to the audio thread. All setters are lock-free atomic publications, safe from any thread; LFO reconfiguration (voices, waveform, spread) is deferred to the next processBlock() on the audio thread. Non-finite setter arguments are ignored.
Dependencies: RingBuffer.h, Oscillator.h, DryWetMixer.h, DspMath.h, AudioSpec.h, AudioBuffer.h, StateBlob.h.
Definition in file Chorus.h.
