WTOscillator Class Reference

Wavetable oscillator with interpolation and shaping options. More...

#include <gin_wtoscillators.h>

Classes
struct	Params

Public Member Functions
	WTOscillator ()=default
void	setSampleRate (double sr)
void	noteOn (float p=-1)
void	process (float note, const Params &params, juce::AudioSampleBuffer &buffer)
void	processAdding (float note, const Params &params, juce::AudioSampleBuffer &buffer)
void	processAddingSimple (float note, const Params &params, juce::AudioSampleBuffer &buffer)
void	processAddingComplex (float note, const Params &params, juce::AudioSampleBuffer &buffer)
void	processAddingCrossfadeComplex (float note, const Params &params, juce::AudioSampleBuffer &buffer)
template<typename T >
void	postProcess (const Params &params, T &v)
void	setWavetable (Wavetable *table)
void	setBlockDC (bool b)

Detailed Description

Wavetable oscillator with interpolation and shaping options.

WTOscillator provides high-quality wavetable synthesis with support for table morphing, formant shifting, phase distortion (bend), and post-processing effects like asymmetry and wavefolding. It uses band-limited wavetables to avoid aliasing.

Key Features:

• Wavetable synthesis with linear interpolation
• Table position morphing for timbral variation
• Formant shifting (pitch-independent spectral shift)
• Phase distortion (bend parameter)
• Wavefolding and asymmetry effects
• Optional DC blocking
• SIMD optimization where available

Parameters (via Params struct):

• position: Wavetable position (0.0 to 1.0)
• bend: Phase distortion amount
• formant: Formant shift (pitch-independent frequency shift)
• asym: Asymmetry/waveshaping amount
• fold: Wavefolding amount
• leftGain/rightGain: Stereo output gains

Usage:

WTOscillator osc;
osc.setSampleRate(44100.0);
osc.setWaveTable(&myBandLimitedTables);
osc.noteOn(); // Initialize phase
 
WTOscillator::Params params;
params.position = 0.3f;
params.fold = 0.2f;
 
osc.process(60.0f, params, audioBuffer); // MIDI note 60 (C4)

See also

BandLimitedLookupTable, DCBlocker

Constructor & Destructor Documentation

WTOscillator()

WTOscillator::WTOscillator ( )

default

Member Function Documentation

setSampleRate()

void WTOscillator::setSampleRate

(

double

sr

)

References DCBlocker::setCutoff(), and DCBlocker::setSampleRate().

noteOn()

void WTOscillator::noteOn

(

float

p = -1

)

process()

void WTOscillator::process	(	float	note,
		const Params &	params,
		juce::AudioSampleBuffer &	buffer
	)

References processAdding().

processAdding()

void WTOscillator::processAdding	(	float	note,
		const Params &	params,
		juce::AudioSampleBuffer &	buffer
	)

References WTOscillator::Params::bend, WTOscillator::Params::formant, DCBlocker::process(), processAddingComplex(), processAddingCrossfadeComplex(), and processAddingSimple().

Referenced by process().

processAddingSimple()

void WTOscillator::processAddingSimple	(	float	note,
		const Params &	params,
		juce::AudioSampleBuffer &	buffer
	)

References Wavetable::getUnchecked(), WTOscillator::Params::leftGain, math::min(), WTOscillator::Params::position, postProcess(), WTOscillator::Params::rightGain, and Wavetable::size().

Referenced by processAdding().

processAddingComplex()

void WTOscillator::processAddingComplex	(	float	note,
		const Params &	params,
		juce::AudioSampleBuffer &	buffer
	)

References WTOscillator::Params::bend, WTOscillator::Params::formant, Wavetable::getUnchecked(), WTOscillator::Params::leftGain, math::min(), WTOscillator::Params::position, postProcess(), WTOscillator::Params::rightGain, and Wavetable::size().

Referenced by processAdding().

processAddingCrossfadeComplex()

void WTOscillator::processAddingCrossfadeComplex	(	float	note,
		const Params &	params,
		juce::AudioSampleBuffer &	buffer
	)

References WTOscillator::Params::bend, WTOscillator::Params::formant, Wavetable::getUnchecked(), WTOscillator::Params::leftGain, math::min(), WTOscillator::Params::position, postProcess(), WTOscillator::Params::rightGain, and Wavetable::size().

Referenced by processAdding().

postProcess()

template<typename T >

void WTOscillator::postProcess	(	const Params &	params,
		T &	v
	)

References WTOscillator::Params::asym, WTOscillator::Params::fold, math::lerp(), math::max(), math::min(), math::pow2(), and math::pow4().

Referenced by processAddingComplex(), processAddingCrossfadeComplex(), and processAddingSimple().

setWavetable()

void WTOscillator::setWavetable

(

Wavetable *

table

)

setBlockDC()

void WTOscillator::setBlockDC

(

bool

b

)

---

The documentation for this class was generated from the following file:

• gin_wtoscillators.h