HephAudio::Flanger Class Reference

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

#include <Flanger.h>

Inheritance diagram for HephAudio::Flanger:

Public Member Functions
	Flanger ()
	Flanger (double depth, double constantDelay, double variableDelay, const Oscillator &lfo)
virtual	~Flanger ()=default
virtual std::string	Name () const override
virtual void	ResetInternalState () override
virtual void	Process (AudioBuffer &buffer, size_t startIndex, size_t frameCount) override
virtual double	GetConstantDelay () const
virtual void	SetConstantDelay (double constantDelay)
virtual double	GetVariableDelay () const
virtual void	SetVariableDelay (double variableDelay)
Public Member Functions inherited from HephAudio::ModulationEffect
virtual	~ModulationEffect ()=default
virtual void	SetOscillator (const Oscillator &lfo)
virtual double	GetDepth () const
virtual void	SetDepth (double depth)
virtual void	Process (AudioBuffer &buffer)
virtual void	Process (AudioBuffer &buffer, size_t startIndex)
Public Member Functions inherited from HephAudio::DoubleBufferedAudioEffect
virtual	~DoubleBufferedAudioEffect ()=default
Public Member Functions inherited from HephAudio::AudioEffect
virtual	~AudioEffect ()=default
virtual bool	HasMTSupport () const
virtual bool	HasRTSupport () const
virtual size_t	GetThreadCount () const
virtual void	SetThreadCount (size_t threadCount)
virtual size_t	CalculateRequiredFrameCount (size_t outputFrameCount, const AudioFormatInfo &formatInfo) const
virtual size_t	CalculateOutputFrameCount (size_t inputFrameCount, const AudioFormatInfo &formatInfo) const
virtual size_t	CalculateAdvanceSize (size_t renderFrameCount, const AudioFormatInfo &formatInfo) const

Protected Member Functions
virtual void	ProcessST (const AudioBuffer &inputBuffer, AudioBuffer &outputBuffer, size_t startIndex, size_t frameCount) override
virtual size_t	CalculatePastSamplesSize (const AudioBuffer &inputBuffer) const
Protected Member Functions inherited from HephAudio::ModulationEffect
	ModulationEffect ()
	ModulationEffect (double depth, const Oscillator &lfo)
Protected Member Functions inherited from HephAudio::DoubleBufferedAudioEffect
	DoubleBufferedAudioEffect ()
virtual AudioBuffer	CreateOutputBuffer (const AudioBuffer &inputBuffer, size_t startIndex, size_t frameCount) const
virtual void	InitializeOutputBuffer (const AudioBuffer &inputBuffer, AudioBuffer &outputBuffer, size_t startIndex, size_t frameCount) const
Protected Member Functions inherited from HephAudio::AudioEffect
	AudioEffect ()
virtual void	ProcessMT (const AudioBuffer &inputBuffer, AudioBuffer &outputBuffer, size_t startIndex, size_t frameCount)

Protected Attributes
double	constantDelay
double	variableDelay
AudioBuffer	pastSamples
Protected Attributes inherited from HephAudio::ModulationEffect
Heph::DoubleBuffer	lfoBuffer
double	depth
size_t	lfoIndex
Protected Attributes inherited from HephAudio::AudioEffect
size_t	threadCount

Detailed Description

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

Constructor & Destructor Documentation

Flanger() [1/2]

HephAudio::Flanger::Flanger

(

)

creates a new instance and initializes it with default values.

Flanger() [2/2]

HephAudio::Flanger::Flanger	(	double	depth,
		double	constantDelay,
		double	variableDelay,
		const Oscillator &	lfo )

creates a new instance and initializes it with the provided values.

Parameters

depth	controls the dry/wet mix ratio. Ranges between 0 and 1.
lfo	low-frequency oscillator.
constantDelay	constant delay in milliseconds.
variableDelay	maximum value of the variable delay in milliseconds.

~Flanger()

virtual HephAudio::Flanger::~Flanger ( )

virtualdefault

releases the resources and destroys the instance.

Member Function Documentation

Name()

virtual std::string HephAudio::Flanger::Name ( ) const

overridevirtual

gets the name of the audio effect.

Implements HephAudio::AudioEffect.

Reimplemented in HephAudio::Chorus.

ResetInternalState()

virtual void HephAudio::Flanger::ResetInternalState ( )

overridevirtual

resets the variables internally used for processing.

Reimplemented from HephAudio::ModulationEffect.

Process()

virtual void HephAudio::Flanger::Process ( AudioBuffer & buffer, size_t startIndex, size_t frameCount )

overridevirtual

Applies the effect.

Parameters

buffer	contains the audio data which will be processed.
startIndex	index of the first audio frame to process.
frameCount	number of frames to process.

Reimplemented from HephAudio::ModulationEffect.

GetConstantDelay()

virtual double HephAudio::Flanger::GetConstantDelay ( ) const

virtual

gets the constant delay in milliseconds.

SetConstantDelay()

virtual void HephAudio::Flanger::SetConstantDelay ( double constantDelay )

virtual

sets the constant delay in milliseconds.

Parameters

constantDelay

constant delay in milliseconds.

GetVariableDelay()

virtual double HephAudio::Flanger::GetVariableDelay ( ) const

virtual

gets the variable delay in milliseconds.

SetVariableDelay()

virtual void HephAudio::Flanger::SetVariableDelay ( double variableDelay )

virtual

sets the variable delay in milliseconds.

Parameters

variableDelay

maximum value of the variable delay in milliseconds.

ProcessST()

virtual void HephAudio::Flanger::ProcessST ( const AudioBuffer & inputBuffer, AudioBuffer & outputBuffer, size_t startIndex, size_t frameCount )

overrideprotectedvirtual

applies the effect using single thread.

Parameters

inputBuffer	contains the audio data which will be processed.
outputBuffer	contains the processed audio data.
startIndex	index of the first sample to process.
frameCount	number of frames to process.

Implements HephAudio::AudioEffect.

Reimplemented in HephAudio::Chorus.

CalculatePastSamplesSize()

virtual size_t HephAudio::Flanger::CalculatePastSamplesSize ( const AudioBuffer & inputBuffer ) const

protectedvirtual

calculates the number of past samples required.

Parameters

inputBuffer

contains the dry data.

Reimplemented in HephAudio::Chorus.

Member Data Documentation

constantDelay

double HephAudio::Flanger::constantDelay

protected

constant delay in milliseconds.

variableDelay

double HephAudio::Flanger::variableDelay

protected

maximum value of the variable delay in milliseconds.

pastSamples

AudioBuffer HephAudio::Flanger::pastSamples

protected

past samples required for real-time processing.