provides sound effects and filters. More...

#include <AudioProcessor.h>

Public Member Functions
	AudioProcessor (const AudioProcessor &)=delete

AudioProcessor &	operator= (const AudioProcessor &)=delete

Static Public Member Functions
static void	ChangeChannelLayout (AudioBuffer &buffer, const AudioChannelLayout &outputChannelLayout)

static void	ChangeSampleRate (AudioBuffer &buffer, uint32_t outputSampleRate)

static std::vector< Heph::DoubleBuffer >	SplitChannels (const AudioBuffer &buffer)

static AudioBuffer	MergeChannels (const std::vector< Heph::DoubleBuffer > &channels, uint32_t sampleRate)

static void	ChangeEndian (AudioBuffer &buffer)

static void	Echo (AudioBuffer &buffer, EchoInfo info)

static void	LinearPanning (AudioBuffer &buffer, double panningFactor)

static void	SquareLawPanning (AudioBuffer &buffer, double panningFactor)

static void	SineLawPanning (AudioBuffer &buffer, double panningFactor)

static void	Tremolo (AudioBuffer &buffer, double depth, const Oscillator &lfo)

static void	Vibrato (AudioBuffer &buffer, double depth, double extent_semitone, const Oscillator &lfo)

static void	Chorus (AudioBuffer &buffer, double depth, double feedbackGain, double baseDelay_ms, double delay_ms, double extent_semitone, const Oscillator &lfo)

static void	Flanger (AudioBuffer &buffer, double depth, double feedbackGain, double baseDelay_ms, double delay_ms, const Oscillator &lfo)

static void	FixOverflow (AudioBuffer &buffer)

static void	Normalize (AudioBuffer &buffer, heph_audio_sample_t peakAmplitude)

static void	RmsNormalize (AudioBuffer &buffer, double rms)

static void	HardClipDistortion (AudioBuffer &buffer, double clippingLevel_dB)

static void	ArctanDistortion (AudioBuffer &buffer, double alpha)

static void	CubicDistortion (AudioBuffer &buffer, double a)

static void	Overdrive (AudioBuffer &buffer, double drive)

static void	Fuzz (AudioBuffer &buffer, double depth, double alpha)

static void	LinearFadeIn (AudioBuffer &buffer, double duration_s)

static void	LinearFadeIn (AudioBuffer &buffer, double duration_s, size_t startIndex)

static void	LinearFadeOut (AudioBuffer &buffer, double duration_s)

static void	LinearFadeOut (AudioBuffer &buffer, double duration_s, size_t startIndex)

static void	Equalizer (AudioBuffer &buffer, Window &window, const std::vector< EqualizerInfo > &infos)

static void	Equalizer (AudioBuffer &buffer, size_t hopSize, size_t fftSize, Window &window, const std::vector< EqualizerInfo > &infos)

static void	EqualizerMT (AudioBuffer &buffer, Window &window, const std::vector< EqualizerInfo > &infos)

static void	EqualizerMT (AudioBuffer &buffer, size_t threadCountPerChannel, Window &window, const std::vector< EqualizerInfo > &infos)

static void	EqualizerMT (AudioBuffer &buffer, size_t hopSize, size_t fftSize, Window &window, const std::vector< EqualizerInfo > &infos)

static void	EqualizerMT (AudioBuffer &buffer, size_t hopSize, size_t fftSize, size_t threadCountPerChannel, Window &window, const std::vector< EqualizerInfo > &infos)

static void	ChangeSpeed (AudioBuffer &buffer, double speed, Window &window)

static void	ChangeSpeed (AudioBuffer &buffer, size_t hopSize, size_t windowSize, double speed, Window &window)

static void	PitchShift (AudioBuffer &buffer, double pitchChange_semitone, Window &window)

static void	PitchShift (AudioBuffer &buffer, size_t hopSize, size_t fftSize, double pitchChange_semitone, Window &window)

static void	PitchShiftMT (AudioBuffer &buffer, double pitchChange_semitone, Window &window)

static void	PitchShiftMT (AudioBuffer &buffer, double pitchChange_semitone, size_t threadCountPerChannel, Window &window)

static void	PitchShiftMT (AudioBuffer &buffer, size_t hopSize, size_t fftSize, double pitchChange_semitone, Window &window)

static void	PitchShiftMT (AudioBuffer &buffer, size_t hopSize, size_t fftSize, double pitchChange_semitone, size_t threadCountPerChannel, Window &window)

static void	LowPassFilter (AudioBuffer &buffer, double cutoffFreq, Window &window)

static void	LowPassFilter (AudioBuffer &buffer, size_t hopSize, size_t fftSize, double cutoffFreq, Window &window)

static void	LowPassFilterMT (AudioBuffer &buffer, double cutoffFreq, Window &window)

static void	LowPassFilterMT (AudioBuffer &buffer, size_t hopSize, size_t fftSize, double cutoffFreq, Window &window)

static void	LowPassFilterMT (AudioBuffer &buffer, double cutoffFreq, size_t threadCountPerChannel, Window &window)

static void	LowPassFilterMT (AudioBuffer &buffer, size_t hopSize, size_t fftSize, double cutoffFreq, size_t threadCountPerChannel, Window &window)

static void	HighPassFilter (AudioBuffer &buffer, double cutoffFreq, Window &window)

static void	HighPassFilter (AudioBuffer &buffer, size_t hopSize, size_t fftSize, double cutoffFreq, Window &window)

static void	HighPassFilterMT (AudioBuffer &buffer, double cutoffFreq, Window &window)

static void	HighPassFilterMT (AudioBuffer &buffer, size_t hopSize, size_t fftSize, double cutoffFreq, Window &window)

static void	HighPassFilterMT (AudioBuffer &buffer, double cutoffFreq, size_t threadCountPerChannel, Window &window)

static void	HighPassFilterMT (AudioBuffer &buffer, size_t hopSize, size_t fftSize, double cutoffFreq, size_t threadCountPerChannel, Window &window)

static void	BandPassFilter (AudioBuffer &buffer, double lowCutoffFreq, double highCutoffFreq, Window &window)

static void	BandPassFilter (AudioBuffer &buffer, size_t hopSize, size_t fftSize, double lowCutoffFreq, double highCutoffFreq, Window &window)

static void	BandPassFilterMT (AudioBuffer &buffer, double lowCutoffFreq, double highCutoffFreq, Window &window)

static void	BandPassFilterMT (AudioBuffer &buffer, size_t hopSize, size_t fftSize, double lowCutoffFreq, double highCutoffFreq, Window &window)

static void	BandPassFilterMT (AudioBuffer &buffer, double lowCutoffFreq, double highCutoffFreq, size_t threadCountPerChannel, Window &window)

static void	BandPassFilterMT (AudioBuffer &buffer, size_t hopSize, size_t fftSize, double lowCutoffFreq, double highCutoffFreq, size_t threadCountPerChannel, Window &window)

static void	BandCutFilter (AudioBuffer &buffer, double lowCutoffFreq, double highCutoffFreq, Window &window)

static void	BandCutFilter (AudioBuffer &buffer, size_t hopSize, size_t fftSize, double lowCutoffFreq, double highCutoffFreq, Window &window)

static void	BandCutFilterMT (AudioBuffer &buffer, double lowCutoffFreq, double highCutoffFreq, Window &window)

static void	BandCutFilterMT (AudioBuffer &buffer, size_t hopSize, size_t fftSize, double lowCutoffFreq, double highCutoffFreq, Window &window)

static void	BandCutFilterMT (AudioBuffer &buffer, double lowCutoffFreq, double highCutoffFreq, size_t threadCountPerChannel, Window &window)

static void	BandCutFilterMT (AudioBuffer &buffer, size_t hopSize, size_t fftSize, double lowCutoffFreq, double highCutoffFreq, size_t threadCountPerChannel, Window &window)

Detailed Description

provides sound effects and filters.

Member Function Documentation

◆ ChangeChannelLayout()

static void HephAudio::AudioProcessor::ChangeChannelLayout	(	AudioBuffer &	buffer,
		const AudioChannelLayout &	outputChannelLayout )

static

changes the channel layout.

◆ ChangeSampleRate()

static void HephAudio::AudioProcessor::ChangeSampleRate	(	AudioBuffer &	buffer,
		uint32_t	outputSampleRate )

static

changes the sample rate.

◆ SplitChannels()

static std::vector< Heph::DoubleBuffer > HephAudio::AudioProcessor::SplitChannels ( const AudioBuffer & buffer )

static

splits the audio channels into separate buffers.

◆ MergeChannels()

static AudioBuffer HephAudio::AudioProcessor::MergeChannels	(	const std::vector< Heph::DoubleBuffer > &	channels,
		uint32_t	sampleRate )

static

merges the channels.

◆ ChangeEndian()

static void HephAudio::AudioProcessor::ChangeEndian ( AudioBuffer & buffer )

static

changes the endianness of the audio samples.
Example: s32le -> s32be.

◆ Echo()

static void HephAudio::AudioProcessor::Echo	(	AudioBuffer &	buffer,
		EchoInfo	info )

static

adds echo to the audio data.

Parameters

info	contains the echo characteristics.

◆ LinearPanning()

static void HephAudio::AudioProcessor::LinearPanning	(	AudioBuffer &	buffer,
		double	panningFactor )

static

linearly increases the volume of one channel while decreasing the other one (stereo only).

Parameters

panningFactor determines how the channels' volume will be changed. Ranges between -1 and 1.
-1 means only the left channel will be audible and 1 means only the right channel will be audible.

◆ SquareLawPanning()

static void HephAudio::AudioProcessor::SquareLawPanning	(	AudioBuffer &	buffer,
		double	panningFactor )

static

increases the volume of one channel while decreasing the other one (stereo only). Uses square root to calculate the volumes.

Parameters

panningFactor determines how the channels' volume will be changed. Ranges between -1 and 1.
-1 means only the left channel will be audible and 1 means only the right channel will be audible.

◆ SineLawPanning()

static void HephAudio::AudioProcessor::SineLawPanning	(	AudioBuffer &	buffer,
		double	panningFactor )

static

increases the volume of one channel while decreasing the other one (stereo only). Uses sin function to calculate the volumes.

Parameters

panningFactor determines how the channels' volume will be changed. Ranges between -1 and 1.
-1 means only the left channel will be audible and 1 means only the right channel will be audible.

◆ Tremolo()

static void HephAudio::AudioProcessor::Tremolo	(	AudioBuffer &	buffer,
		double	depth,
		const Oscillator &	lfo )

static

changes the volume of the audio data periodically and mixes the result with the input signal.

Parameters

depth	controls the dry/wet mix ratio. Ranges between 0 and 1.
lfo	low-frequency oscillator .

◆ Vibrato()

static void HephAudio::AudioProcessor::Vibrato	(	AudioBuffer &	buffer,
		double	depth,
		double	extent_semitone,
		const Oscillator &	lfo )

static

changes the pitch of the audio data periodically and mixes the result with the input signal.

Parameters

depth	controls the dry/wet mix ratio. Ranges between 0 and 1.
extent_semitone	maximum pitch change in terms of semitones.
lfo	low-frequency oscillator .

◆ Chorus()

static void HephAudio::AudioProcessor::Chorus	(	AudioBuffer &	buffer,
		double	depth,
		double	feedbackGain,
		double	baseDelay_ms,
		double	delay_ms,
		double	extent_semitone,
		const Oscillator &	lfo )

static

delays the audio data and changes its pitch periodically. Then mixes the result with the input signal.

Parameters

depth	controls the dry/wet mix ratio. Ranges between 0 and 1.
feedbackGain	gain of the feedback sample.
baseDelay_ms	constant delay, in milliseconds, that will be added to the wet signal.
delay_ms	maximum value of the variable delay, in milliseconds, that will be added to the wet signal. The delay applied to wet samples changes periodically. The maximum delay that will be applied can be calculated as baseDelay_ms + delay_ms.
extent_semitone	maximum pitch change in terms of semitones.
lfo	low-frequency oscillator .

◆ Flanger()

static void HephAudio::AudioProcessor::Flanger	(	AudioBuffer &	buffer,
		double	depth,
		double	feedbackGain,
		double	baseDelay_ms,
		double	delay_ms,
		const Oscillator &	lfo )

static

delays the audio data and mixes the result with the input signal. The amount of delay applied changes periodically.

Parameters

depth	controls the dry/wet mix ratio. Ranges between 0 and 1.
feedbackGain	gain of the feedback sample.
baseDelay_ms	constant delay, in milliseconds, that will be added to the wet signal.
delay_ms	maximum value of the variable delay, in milliseconds, that will be added to the wet signal. The delay applied to wet samples changes periodically. The maximum delay that will be applied can be calculated as baseDelay_ms + delay_ms.
lfo	low-frequency oscillator .

◆ FixOverflow()

static void HephAudio::AudioProcessor::FixOverflow ( AudioBuffer & buffer )

static

fixes the distortion due to floating point samples exceeding the [-1, 1] range.

Important: this method does NOT work with the integer types.

◆ Normalize()

static void HephAudio::AudioProcessor::Normalize	(	AudioBuffer &	buffer,
		heph_audio_sample_t	peakAmplitude )

static

normalizes the audio data at the provided amplitude.

Parameters

peakAmplitude maximum amplitude of the output signal.

◆ RmsNormalize()

static void HephAudio::AudioProcessor::RmsNormalize	(	AudioBuffer &	buffer,
		double	rms )

static

normalizes the audio data at the provided rms.

Parameters

rms	root mean square value of the output signal.

◆ HardClipDistortion()

static void HephAudio::AudioProcessor::HardClipDistortion	(	AudioBuffer &	buffer,
		double	clippingLevel_dB )

static

applies hard-clipping distortion.

Parameters

clippingLevel_dB threshold value in decibels. Must be negative or zero.

◆ ArctanDistortion()

static void HephAudio::AudioProcessor::ArctanDistortion	(	AudioBuffer &	buffer,
		double	alpha )

static

applies soft-clipping distortion via arctan function.

Parameters

alpha controls the amount of distortion. ranges between 0 and 1.

◆ CubicDistortion()

static void HephAudio::AudioProcessor::CubicDistortion	(	AudioBuffer &	buffer,
		double	a )

static

applies cubic distortion.

Parameters

a	controls the amount of distortion. ranges between 0 and 1.

◆ Overdrive()

static void HephAudio::AudioProcessor::Overdrive	(	AudioBuffer &	buffer,
		double	drive )

static

applies overdrive distortion.

Parameters

drive controls the amount of distortion. ranges between 0 and 1.

◆ Fuzz()

static void HephAudio::AudioProcessor::Fuzz	(	AudioBuffer &	buffer,
		double	depth,
		double	alpha )

static

applies fuzz distortion.

Parameters

depth	controls the dry/wet mix ratio. Ranges between 0 and 1.
alpha	controls the amount of distortion. ranges between 0 and 11.

◆ LinearFadeIn() [1/2]

static void HephAudio::AudioProcessor::LinearFadeIn	(	AudioBuffer &	buffer,
		double	duration_s )

static

applies linear fade-in.

Parameters

duration_s duration of the fade-in in seconds.

◆ LinearFadeIn() [2/2]

static void HephAudio::AudioProcessor::LinearFadeIn	(	AudioBuffer &	buffer,
		double	duration_s,
		size_t	startIndex )

static

applies linear fade-in.

Parameters

duration_s	duration of the fade-in in seconds.
startIndex	index of the first audio frame the effect will be applied to.

◆ LinearFadeOut() [1/2]

static void HephAudio::AudioProcessor::LinearFadeOut	(	AudioBuffer &	buffer,
		double	duration_s )

static

applies linear fade-out.

Parameters

duration_s duration of the fade-out in seconds.

◆ LinearFadeOut() [2/2]

static void HephAudio::AudioProcessor::LinearFadeOut	(	AudioBuffer &	buffer,
		double	duration_s,
		size_t	startIndex )

static

applies linear fade-out.

Parameters

duration_s	duration of the fade-out in seconds.
startIndex	index of the first audio frame the effect will be applied to.

◆ Equalizer() [1/2]

static void HephAudio::AudioProcessor::Equalizer	(	AudioBuffer &	buffer,
		Window &	window,
		const std::vector< EqualizerInfo > &	infos )

static

equalizer.

Parameters

window	Window that will be applied to the audio signal.
infos	contains the equalizer characteristics.

◆ Equalizer() [2/2]

static void HephAudio::AudioProcessor::Equalizer	(	AudioBuffer &	buffer,
		size_t	hopSize,
		size_t	fftSize,
		Window &	window,
		const std::vector< EqualizerInfo > &	infos )

static

equalizer.

Parameters

hopSize	hop size.
fftSize	length of the FFT in samples.
window	Window that will be applied to the audio signal.
infos	contains the equalizer characteristics.

◆ EqualizerMT() [1/4]

static void HephAudio::AudioProcessor::EqualizerMT	(	AudioBuffer &	buffer,
		Window &	window,
		const std::vector< EqualizerInfo > &	infos )

static

multithreaded equalizer.

Parameters

window	Window that will be applied to the audio signal.
infos	contains the equalizer characteristics.

◆ EqualizerMT() [2/4]

static void HephAudio::AudioProcessor::EqualizerMT	(	AudioBuffer &	buffer,
		size_t	threadCountPerChannel,
		Window &	window,
		const std::vector< EqualizerInfo > &	infos )

static

multithreaded equalizer.

Parameters

threadCountPerChannel	number of threads will be used for each channel.
window	Window that will be applied to the audio signal.
infos	contains the equalizer characteristics.

◆ EqualizerMT() [3/4]

static void HephAudio::AudioProcessor::EqualizerMT	(	AudioBuffer &	buffer,
		size_t	hopSize,
		size_t	fftSize,
		Window &	window,
		const std::vector< EqualizerInfo > &	infos )

static

multithreaded equalizer.

Parameters

hopSize	hop size.
fftSize	length of the FFT in samples.
window	Window that will be applied to the audio signal.
infos	contains the equalizer characteristics.

◆ EqualizerMT() [4/4]

static void HephAudio::AudioProcessor::EqualizerMT	(	AudioBuffer &	buffer,
		size_t	hopSize,
		size_t	fftSize,
		size_t	threadCountPerChannel,
		Window &	window,
		const std::vector< EqualizerInfo > &	infos )

static

multithreaded equalizer.

Parameters

hopSize	hop size.
fftSize	length of the FFT in samples.
threadCountPerChannel	number of threads will be used for each channel.
window	Window that will be applied to the audio signal.
infos	contains the equalizer characteristics.

◆ ChangeSpeed() [1/2]

static void HephAudio::AudioProcessor::ChangeSpeed	(	AudioBuffer &	buffer,
		double	speed,
		Window &	window )

static

changes the playback speed of the audio data without changing the pitch.

Parameters

speed	playback speed multiplier.
window	Window that will be applied to the audio signal.

◆ ChangeSpeed() [2/2]

static void HephAudio::AudioProcessor::ChangeSpeed	(	AudioBuffer &	buffer,
		size_t	hopSize,
		size_t	windowSize,
		double	speed,
		Window &	window )

static

changes the playback speed of the audio data without changing the pitch.

Parameters

hopSize	hop size.
windowSize	window size.
speed	playback speed multiplier.
window	Window that will be applied to the audio signal.

◆ PitchShift() [1/2]

static void HephAudio::AudioProcessor::PitchShift	(	AudioBuffer &	buffer,
		double	pitchChange_semitone,
		Window &	window )

static

changes the pitch of the audio data without changing the playback speed.

Parameters

pitchChange_semitone	change in pitch in terms of semitones.
window	Window that will be applied to the audio signal.

◆ PitchShift() [2/2]

static void HephAudio::AudioProcessor::PitchShift	(	AudioBuffer &	buffer,
		size_t	hopSize,
		size_t	fftSize,
		double	pitchChange_semitone,
		Window &	window )

static

changes the pitch of the audio data without changing the playback speed.

Parameters

hopSize	hop size.
fftSize	length of the FFT in samples.
pitchChange_semitone	change in pitch in terms of semitones.
window	Window that will be applied to the audio signal.

◆ PitchShiftMT() [1/4]

static void HephAudio::AudioProcessor::PitchShiftMT	(	AudioBuffer &	buffer,
		double	pitchChange_semitone,
		Window &	window )

static

[multithreaded] changes the pitch of the audio data without changing the playback speed.

Parameters

pitchChange_semitone	change in pitch in terms of semitones.
window	Window that will be applied to the audio signal.

◆ PitchShiftMT() [2/4]

static void HephAudio::AudioProcessor::PitchShiftMT	(	AudioBuffer &	buffer,
		double	pitchChange_semitone,
		size_t	threadCountPerChannel,
		Window &	window )

static

[multithreaded] changes the pitch of the audio data without changing the playback speed.

Parameters

pitchChange_semitone	change in pitch in terms of semitones.
threadCountPerChannel	number of threads will be used for each channel.
window	Window that will be applied to the audio signal.

◆ PitchShiftMT() [3/4]

static void HephAudio::AudioProcessor::PitchShiftMT	(	AudioBuffer &	buffer,
		size_t	hopSize,
		size_t	fftSize,
		double	pitchChange_semitone,
		Window &	window )

static

[multithreaded] changes the pitch of the audio data without changing the playback speed.

Parameters

hopSize	hop size.
fftSize	length of the FFT in samples.
pitchChange_semitone	change in pitch in terms of semitones.
window	Window that will be applied to the audio signal.

◆ PitchShiftMT() [4/4]

static void HephAudio::AudioProcessor::PitchShiftMT	(	AudioBuffer &	buffer,
		size_t	hopSize,
		size_t	fftSize,
		double	pitchChange_semitone,
		size_t	threadCountPerChannel,
		Window &	window )

static

[multithreaded] changes the pitch of the audio data without changing the playback speed.

Parameters

hopSize	hop size.
fftSize	length of the FFT in samples.
pitchChange_semitone	change in pitch in terms of semitones.
threadCountPerChannel	number of threads will be used for each channel.
window	Window that will be applied to the audio signal.

◆ LowPassFilter() [1/2]

static void HephAudio::AudioProcessor::LowPassFilter	(	AudioBuffer &	buffer,
		double	cutoffFreq,
		Window &	window )

static

removes the frequencies that are higher than the cutoffFreq.

Parameters

cutoffFreq	the cutoff frequency in Hz.
window	Window that will be applied to the audio signal.

◆ LowPassFilter() [2/2]

static void HephAudio::AudioProcessor::LowPassFilter	(	AudioBuffer &	buffer,
		size_t	hopSize,
		size_t	fftSize,
		double	cutoffFreq,
		Window &	window )

static

removes the frequencies that are higher than the cutoffFreq.

Parameters

hopSize	hop size.
fftSize	length of the FFT in samples.
cutoffFreq	the cutoff frequency in Hz.
window	Window that will be applied to the audio signal.

◆ LowPassFilterMT() [1/4]

static void HephAudio::AudioProcessor::LowPassFilterMT	(	AudioBuffer &	buffer,
		double	cutoffFreq,
		Window &	window )

static

[multithreaded] removes the frequencies that are higher than the cutoffFreq.

Parameters

cutoffFreq	the cutoff frequency in Hz.
window	Window that will be applied to the audio signal.

◆ LowPassFilterMT() [2/4]

static void HephAudio::AudioProcessor::LowPassFilterMT	(	AudioBuffer &	buffer,
		size_t	hopSize,
		size_t	fftSize,
		double	cutoffFreq,
		Window &	window )

static

[multithreaded] removes the frequencies that are higher than the cutoffFreq.

Parameters

hopSize	hop size.
fftSize	length of the FFT in samples.
cutoffFreq	the cutoff frequency in Hz.
window	Window that will be applied to the audio signal.

◆ LowPassFilterMT() [3/4]

static void HephAudio::AudioProcessor::LowPassFilterMT	(	AudioBuffer &	buffer,
		double	cutoffFreq,
		size_t	threadCountPerChannel,
		Window &	window )

static

[multithreaded] removes the frequencies that are higher than the cutoffFreq.

Parameters

cutoffFreq	the cutoff frequency in Hz.
threadCountPerChannel	number of threads will be used for each channel.
window	Window that will be applied to the audio signal.

◆ LowPassFilterMT() [4/4]

static void HephAudio::AudioProcessor::LowPassFilterMT	(	AudioBuffer &	buffer,
		size_t	hopSize,
		size_t	fftSize,
		double	cutoffFreq,
		size_t	threadCountPerChannel,
		Window &	window )

static

[multithreaded] removes the frequencies that are higher than the cutoffFreq.

Parameters

hopSize	hop size.
fftSize	length of the FFT in samples.
cutoffFreq	the cutoff frequency in Hz.
threadCountPerChannel	number of threads will be used for each channel.
window	Window that will be applied to the audio signal.

◆ HighPassFilter() [1/2]

static void HephAudio::AudioProcessor::HighPassFilter	(	AudioBuffer &	buffer,
		double	cutoffFreq,
		Window &	window )

static

removes the frequencies that are lower than the cutoffFreq.

Parameters

cutoffFreq	the cutoff frequency in Hz.
window	Window that will be applied to the audio signal.

◆ HighPassFilter() [2/2]

static void HephAudio::AudioProcessor::HighPassFilter	(	AudioBuffer &	buffer,
		size_t	hopSize,
		size_t	fftSize,
		double	cutoffFreq,
		Window &	window )

static

removes the frequencies that are lower than the cutoffFreq.

Parameters

hopSize	hop size.
fftSize	length of the FFT in samples.
cutoffFreq	the cutoff frequency in Hz.
window	Window that will be applied to the audio signal.

◆ HighPassFilterMT() [1/4]

static void HephAudio::AudioProcessor::HighPassFilterMT	(	AudioBuffer &	buffer,
		double	cutoffFreq,
		Window &	window )

static

[multithreaded] removes the frequencies that are higher than the cutoffFreq.

Parameters

cutoffFreq	the cutoff frequency in Hz.
window	Window that will be applied to the audio signal.

◆ HighPassFilterMT() [2/4]

static void HephAudio::AudioProcessor::HighPassFilterMT	(	AudioBuffer &	buffer,
		size_t	hopSize,
		size_t	fftSize,
		double	cutoffFreq,
		Window &	window )

static

[multithreaded] removes the frequencies that are higher than the cutoffFreq.

Parameters

hopSize	hop size.
fftSize	length of the FFT in samples.
cutoffFreq	the cutoff frequency in Hz.
window	Window that will be applied to the audio signal.

◆ HighPassFilterMT() [3/4]

static void HephAudio::AudioProcessor::HighPassFilterMT	(	AudioBuffer &	buffer,
		double	cutoffFreq,
		size_t	threadCountPerChannel,
		Window &	window )

static

[multithreaded] removes the frequencies that are higher than the cutoffFreq.

Parameters

cutoffFreq	the cutoff frequency in Hz.
threadCountPerChannel	number of threads will be used for each channel.
window	Window that will be applied to the audio signal.

◆ HighPassFilterMT() [4/4]

static void HephAudio::AudioProcessor::HighPassFilterMT	(	AudioBuffer &	buffer,
		size_t	hopSize,
		size_t	fftSize,
		double	cutoffFreq,
		size_t	threadCountPerChannel,
		Window &	window )

static

[multithreaded] removes the frequencies that are higher than the cutoffFreq.

Parameters

hopSize	hop size.
fftSize	length of the FFT in samples.
cutoffFreq	the cutoff frequency in Hz.
threadCountPerChannel	number of threads will be used for each channel.
window	Window that will be applied to the audio signal.

◆ BandPassFilter() [1/2]

static void HephAudio::AudioProcessor::BandPassFilter	(	AudioBuffer &	buffer,
		double	lowCutoffFreq,
		double	highCutoffFreq,
		Window &	window )

static

removes the frequencies that are not in the provided frequency band.

Parameters

lowCutoffFreq	start frequency of the passband.
highCutoffFreq	stop frequency of the passband.
window	Window that will be applied to the audio signal.

◆ BandPassFilter() [2/2]

static void HephAudio::AudioProcessor::BandPassFilter	(	AudioBuffer &	buffer,
		size_t	hopSize,
		size_t	fftSize,
		double	lowCutoffFreq,
		double	highCutoffFreq,
		Window &	window )

static

removes the frequencies that are not in the provided frequency band.

Parameters

hopSize	hop size.
fftSize	length of the FFT in samples.
lowCutoffFreq	start frequency of the passband.
highCutoffFreq	stop frequency of the passband.
window	Window that will be applied to the audio signal.

◆ BandPassFilterMT() [1/4]

static void HephAudio::AudioProcessor::BandPassFilterMT	(	AudioBuffer &	buffer,
		double	lowCutoffFreq,
		double	highCutoffFreq,
		Window &	window )

static

[multithreaded] removes the frequencies that are not in the provided frequency band.

Parameters

lowCutoffFreq	start frequency of the passband.
highCutoffFreq	stop frequency of the passband.
window	Window that will be applied to the audio signal.

◆ BandPassFilterMT() [2/4]

static void HephAudio::AudioProcessor::BandPassFilterMT	(	AudioBuffer &	buffer,
		size_t	hopSize,
		size_t	fftSize,
		double	lowCutoffFreq,
		double	highCutoffFreq,
		Window &	window )

static

[multithreaded] removes the frequencies that are not in the provided frequency band.

Parameters

hopSize	hop size.
fftSize	length of the FFT in samples.
lowCutoffFreq	start frequency of the passband.
highCutoffFreq	stop frequency of the passband.
window	Window that will be applied to the audio signal.

◆ BandPassFilterMT() [3/4]

static void HephAudio::AudioProcessor::BandPassFilterMT	(	AudioBuffer &	buffer,
		double	lowCutoffFreq,
		double	highCutoffFreq,
		size_t	threadCountPerChannel,
		Window &	window )

static

[multithreaded] removes the frequencies that are not in the provided frequency band.

Parameters

lowCutoffFreq	start frequency of the passband.
highCutoffFreq	stop frequency of the passband.
threadCountPerChannel	number of threads will be used for each channel.
window	Window that will be applied to the audio signal.

◆ BandPassFilterMT() [4/4]

static void HephAudio::AudioProcessor::BandPassFilterMT	(	AudioBuffer &	buffer,
		size_t	hopSize,
		size_t	fftSize,
		double	lowCutoffFreq,
		double	highCutoffFreq,
		size_t	threadCountPerChannel,
		Window &	window )

static

[multithreaded] removes the frequencies that are not in the provided frequency band.

Parameters

hopSize	hop size.
fftSize	length of the FFT in samples.
lowCutoffFreq	start frequency of the passband.
highCutoffFreq	stop frequency of the passband.
threadCountPerChannel	number of threads will be used for each channel.
window	Window that will be applied to the audio signal.

◆ BandCutFilter() [1/2]

static void HephAudio::AudioProcessor::BandCutFilter	(	AudioBuffer &	buffer,
		double	lowCutoffFreq,
		double	highCutoffFreq,
		Window &	window )

static

removes the frequencies that are in the provided frequency band.

Parameters

lowCutoffFreq	start frequency of the passband.
highCutoffFreq	stop frequency of the passband.
window	Window that will be applied to the audio signal.

◆ BandCutFilter() [2/2]

static void HephAudio::AudioProcessor::BandCutFilter	(	AudioBuffer &	buffer,
		size_t	hopSize,
		size_t	fftSize,
		double	lowCutoffFreq,
		double	highCutoffFreq,
		Window &	window )

static

removes the frequencies that are in the provided frequency band.

Parameters

hopSize	hop size.
fftSize	length of the FFT in samples.
lowCutoffFreq	start frequency of the passband.
highCutoffFreq	stop frequency of the passband.
window	Window that will be applied to the audio signal.

◆ BandCutFilterMT() [1/4]

static void HephAudio::AudioProcessor::BandCutFilterMT	(	AudioBuffer &	buffer,
		double	lowCutoffFreq,
		double	highCutoffFreq,
		Window &	window )

static

[multithreaded] removes the frequencies that are in the provided frequency band.

Parameters

lowCutoffFreq	start frequency of the passband.
highCutoffFreq	stop frequency of the passband.
window	Window that will be applied to the audio signal.

◆ BandCutFilterMT() [2/4]

static void HephAudio::AudioProcessor::BandCutFilterMT	(	AudioBuffer &	buffer,
		size_t	hopSize,
		size_t	fftSize,
		double	lowCutoffFreq,
		double	highCutoffFreq,
		Window &	window )

static

[multithreaded] removes the frequencies that are in the provided frequency band.

Parameters

hopSize	hop size.
fftSize	length of the FFT in samples.
lowCutoffFreq	start frequency of the passband.
highCutoffFreq	stop frequency of the passband.
window	Window that will be applied to the audio signal.

◆ BandCutFilterMT() [3/4]

static void HephAudio::AudioProcessor::BandCutFilterMT	(	AudioBuffer &	buffer,
		double	lowCutoffFreq,
		double	highCutoffFreq,
		size_t	threadCountPerChannel,
		Window &	window )

static

[multithreaded] removes the frequencies that are in the provided frequency band.

Parameters

lowCutoffFreq	start frequency of the passband.
highCutoffFreq	stop frequency of the passband.
threadCountPerChannel	number of threads will be used for each channel.
window	Window that will be applied to the audio signal.

◆ BandCutFilterMT() [4/4]

static void HephAudio::AudioProcessor::BandCutFilterMT	(	AudioBuffer &	buffer,
		size_t	hopSize,
		size_t	fftSize,
		double	lowCutoffFreq,
		double	highCutoffFreq,
		size_t	threadCountPerChannel,
		Window &	window )

static

[multithreaded] removes the frequencies that are in the provided frequency band.

Parameters

hopSize	hop size.
fftSize	length of the FFT in samples.
lowCutoffFreq	start frequency of the passband.
highCutoffFreq	stop frequency of the passband.
threadCountPerChannel	number of threads will be used for each channel.
window	Window that will be applied to the audio signal.

Public Member Functions

Static Public Member Functions

Detailed Description

Member Function Documentation

◆ ChangeChannelLayout()

◆ ChangeSampleRate()

◆ SplitChannels()

◆ MergeChannels()

◆ ChangeEndian()

◆ Echo()

◆ LinearPanning()

◆ SquareLawPanning()

◆ SineLawPanning()

◆ Tremolo()

◆ Vibrato()

◆ Chorus()

◆ Flanger()

◆ FixOverflow()

◆ Normalize()

◆ RmsNormalize()

◆ HardClipDistortion()

◆ ArctanDistortion()

◆ CubicDistortion()

◆ Overdrive()

◆ Fuzz()

◆ LinearFadeIn() [1/2]

◆ LinearFadeIn() [2/2]

◆ LinearFadeOut() [1/2]

◆ LinearFadeOut() [2/2]

◆ Equalizer() [1/2]

◆ Equalizer() [2/2]

◆ EqualizerMT() [1/4]

◆ EqualizerMT() [2/4]

◆ EqualizerMT() [3/4]

◆ EqualizerMT() [4/4]

◆ ChangeSpeed() [1/2]

◆ ChangeSpeed() [2/2]

◆ PitchShift() [1/2]

◆ PitchShift() [2/2]

◆ PitchShiftMT() [1/4]

◆ PitchShiftMT() [2/4]

◆ PitchShiftMT() [3/4]

◆ PitchShiftMT() [4/4]

◆ LowPassFilter() [1/2]

◆ LowPassFilter() [2/2]

◆ LowPassFilterMT() [1/4]

◆ LowPassFilterMT() [2/4]

◆ LowPassFilterMT() [3/4]

◆ LowPassFilterMT() [4/4]

◆ HighPassFilter() [1/2]

◆ HighPassFilter() [2/2]

◆ HighPassFilterMT() [1/4]

◆ HighPassFilterMT() [2/4]

◆ HighPassFilterMT() [3/4]

◆ HighPassFilterMT() [4/4]

◆ BandPassFilter() [1/2]

◆ BandPassFilter() [2/2]

◆ BandPassFilterMT() [1/4]

◆ BandPassFilterMT() [2/4]

◆ BandPassFilterMT() [3/4]

◆ BandPassFilterMT() [4/4]

◆ BandCutFilter() [1/2]

◆ BandCutFilter() [2/2]

◆ BandCutFilterMT() [1/4]

◆ BandCutFilterMT() [2/4]

◆ BandCutFilterMT() [3/4]

◆ BandCutFilterMT() [4/4]