DeEsser.h File Reference

Frequency-selective dynamic processor for sibilance reduction. More...

#include "../Core/AudioBuffer.h"
#include "../Core/AudioSpec.h"
#include "../Core/Biquad.h"
#include "../Core/DspMath.h"
#include "../Core/StateBlob.h"
#include <algorithm>
#include <array>
#include <atomic>
#include <cmath>
#include <cstddef>
#include <cstdint>
#include <vector>

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Classes
class	dspark::DeEsser< T >
	Stereo-linked, CPU-optimized dynamic-EQ de-esser. More...

Namespaces
namespace	dspark
	Main namespace for the DSPark framework.

Detailed Description

Frequency-selective dynamic processor for sibilance reduction.

A dynamic-EQ style de-esser: a bandpass sidechain detects energy in a configurable frequency band and a dynamic peak-cut bell applies the gain reduction at that band. Optimized for zero inner-loop allocations and trigonometric eliminations during dynamic EQ modulation.

Architecture:

1. Bandpass sidechain (Biquad) isolates the sibilant band.
2. Envelope follower (peak with attack/release) tracks maximum stereo sibilance.
3. Fast-math Biquad Peak cut applies gain reduction with precomputed trig terms.

Threading: prepare() belongs to the setup thread; processBlock() and reset() belong to the audio thread. Setters are lock-free atomic publications, safe from any thread, consumed at the next processBlock(). Non-finite setter arguments are ignored.

Dependencies: Biquad.h, DspMath.h, AudioSpec.h, AudioBuffer.h, StateBlob.h.

dspark::DeEsser<float> deesser;
deesser.prepare(spec);
deesser.setFrequency(7000.0f);
deesser.setThreshold(-20.0f);
deesser.setReduction(12.0f);
deesser.processBlock(buffer);

Definition in file DeEsser.h.