WhiteNoiseGenerator< T > Class Template Reference

Generates a random noise sound with the help of rand() function. More...

#include <CodecOpusOgg.h>

Inheritance diagram for WhiteNoiseGenerator< T >:

Public Member Functions
	WhiteNoiseGenerator (T amplitude=32767)
	the scale defines the max value which is generated
	WhiteNoiseGenerator (T amplitude=32767)
	the scale defines the max value which is generated
virtual AudioInfo	audioInfo ()
	Provides the AudioInfo.
virtual bool	begin (AudioInfo info)
	Starts the processing with the provided AudioInfo.
virtual AudioInfo	defaultConfig ()
	Provides the default configuration.
virtual void	end ()
virtual bool	isActive ()
	Checks if the begin method has been called - after end() isActive is false.
virtual size_t	readBytes (uint8_t *data, size_t len)
	Provides the data as byte array with the requested number of channels.
T	readSample ()
	Provides a single sample.
T	readSample ()
	Provides a single sample.
virtual size_t	readSamples (int16_t *data, size_t len)
virtual void	restart ()
	Restarts the generator, e.g. after a play time has been defined and reached.
virtual void	setAudioInfo (AudioInfo info)
	Defines/updates the AudioInfo.
virtual void	setFrequency (float frequency)
	Abstract method: not implemented! Just provides an error message...
virtual void	setPlayTime (uint32_t playMs, uint8_t upPercent=20, uint8_t downPercent=30)
	Defines the play time in ms and the ramp up and ramp down time in percent.
virtual void	setRampTimes (uint32_t playMs, uint32_t upMs=5, uint32_t downMs=5)

Protected Member Functions
int16_t	applyRamp (int16_t sample)
int	random (int min, int max)
int	random (int min, int max)
size_t	readBytesFrames (uint8_t *buffer, size_t lengthBytes, int frames, int channels)
size_t	readBytesFromBuffer (uint8_t *buffer, size_t lengthBytes, int frame_size, int channels)
void	recalculatePlayTime ()

Protected Attributes
bool	active
bool	activeWarningIssued
T	amplitude
uint32_t	currentSample
uint32_t	downMs
uint8_t	downPercent
uint32_t	downSamples
float	factor
AudioInfo	info
uint32_t	playMs
uint32_t	playSamples
float	rampDownDec
float	rampUpInc
RingBuffer< uint8_t >	ring_buffer
uint32_t	upMs
uint8_t	upPercent
uint32_t	upSamples

Detailed Description

template<class T = int16_t>
class audio_tools::audio_tools::WhiteNoiseGenerator< T >

Generates a random noise sound with the help of rand() function.

Author

Phil Schatzmann

Copyright

GPLv3

Constructor & Destructor Documentation

WhiteNoiseGenerator() [1/2]

template<class T = int16_t>

WhiteNoiseGenerator ( T amplitude = 32767 )

inline

the scale defines the max value which is generated

WhiteNoiseGenerator() [2/2]

template<class T = int16_t>

WhiteNoiseGenerator ( T amplitude = 32767 )

inline

the scale defines the max value which is generated

Member Function Documentation

applyRamp()

int16_t applyRamp ( int16_t sample )

inlineprotectedinherited

audioInfo()

virtual AudioInfo audioInfo ( )

inlinevirtualinherited

Provides the AudioInfo.

begin()

virtual bool begin ( AudioInfo info )

inlinevirtualinherited

Starts the processing with the provided AudioInfo.

Reimplemented in FastIntSineGenerator< T >, FastIntSineGenerator< T >, FloatSineGenerator< T >, FloatSineGenerator< T >, GeneratorFixedValue< T >, GeneratorFixedValue< T >, GeneratorFromArray< T >, GeneratorFromArray< T >, SawToothGenerator< T >, SawToothGenerator< T >, SquareWaveGenerator< T >, and SquareWaveGenerator< T >.

defaultConfig()

virtual AudioInfo defaultConfig ( )

inlinevirtualinherited

Provides the default configuration.

Reimplemented in FloatSineGenerator< T >, FloatSineGenerator< T >, FloatSineGenerator< int16_t >, FloatSineGenerator< T >, STKGenerator< StkCls, T >, STKGenerator< stk::Instrmnt, int16_t >, and STKGenerator< StkCls, int16_t >.

end()

virtual void end ( )

inlinevirtualinherited

Reimplemented in GeneratorFromArray< T >, GeneratorFromArray< T >, GeneratorQueue< T >, GeneratorQueue< T >, GeneratorFromArray< T >, and GeneratorQueue< T >.

isActive()

virtual bool isActive ( )

inlinevirtualinherited

Checks if the begin method has been called - after end() isActive is false.

random() [1/2]

template<class T = int16_t>

int random ( int min, int max )

inlineprotected

random() [2/2]

template<class T = int16_t>

int random ( int min, int max )

inlineprotected

readBytes()

virtual size_t readBytes ( uint8_t * data, size_t len )

inlinevirtualinherited

Provides the data as byte array with the requested number of channels.

Reimplemented in GeneratorQueue< T >, GeneratorQueue< T >, and GeneratorQueue< T >.

readBytesFrames()

size_t readBytesFrames ( uint8_t * buffer, size_t lengthBytes, int frames, int channels )

inlineprotectedinherited

readBytesFromBuffer()

size_t readBytesFromBuffer ( uint8_t * buffer, size_t lengthBytes, int frame_size, int channels )

inlineprotectedinherited

readSample() [1/2]

template<class T = int16_t>

T readSample ( )

inlinevirtual

Provides a single sample.

Implements SoundGenerator< int16_t >.

readSample() [2/2]

template<class T = int16_t>

T readSample ( )

inlinevirtual

Provides a single sample.

Implements SoundGenerator< int16_t >.

readSamples()

virtual size_t readSamples ( int16_t * data, size_t len )

inlinevirtualinherited

Provides the data as T array (interleaved by channel) with the requested number of samples (values, not frames)

recalculatePlayTime()

void recalculatePlayTime ( )

inlineprotectedinherited

restart()

virtual void restart ( )

inlinevirtualinherited

Restarts the generator, e.g. after a play time has been defined and reached.

setAudioInfo()

virtual void setAudioInfo ( AudioInfo info )

inlinevirtualinherited

Defines/updates the AudioInfo.

Reimplemented in FastIntSineGenerator< T >, FastIntSineGenerator< T >, FloatSineGenerator< T >, FloatSineGenerator< T >, FloatSineGenerator< int16_t >, SawToothGenerator< T >, SawToothGenerator< T >, SquareWaveGenerator< T >, and SquareWaveGenerator< T >.

setFrequency()

virtual void setFrequency ( float frequency )

inlinevirtualinherited

Abstract method: not implemented! Just provides an error message...

Reimplemented in FastIntSineGenerator< T >, FastIntSineGenerator< T >, FloatSineGenerator< T >, FloatSineGenerator< T >, FloatSineGenerator< int16_t >, GeneratorFromArray< T >, GeneratorFromArray< T >, GeneratorQueue< T >, GeneratorQueue< T >, SawToothGenerator< T >, SawToothGenerator< T >, SineFromTable< T >, SineFromTable< T >, SquareWaveGenerator< T >, SquareWaveGenerator< T >, FastIntSineGenerator< T >, FloatSineGenerator< T >, GeneratorFromArray< T >, GeneratorQueue< T >, SawToothGenerator< T >, SineFromTable< T >, SquareWaveGenerator< T >, and STKInstrument< StkCls, T >.

setPlayTime()

virtual void setPlayTime ( uint32_t playMs, uint8_t upPercent = 20, uint8_t downPercent = 30 )

inlinevirtualinherited

Defines the play time in ms and the ramp up and ramp down time in percent.

Reimplemented in GeneratorQueue< T >, GeneratorQueue< T >, and GeneratorQueue< T >.

setRampTimes()

virtual void setRampTimes ( uint32_t playMs, uint32_t upMs = 5, uint32_t downMs = 5 )

inlinevirtualinherited

Alternative to setPlayTime. It sets ramp-up and ramp-down times in ms instead of percentages. If playMs == 0, it will play indefinitely. restart();begin(); starts the ramp-up and sustain as normal, but it will sustain forever. end(true) triggers a ramp-down then inactive.

Member Data Documentation

active

bool active

protectedinherited

activeWarningIssued

bool activeWarningIssued

protectedinherited

amplitude

template<class T = int16_t>

T amplitude

protected

currentSample

uint32_t currentSample

protectedinherited

downMs

uint32_t downMs

protectedinherited

downPercent

uint8_t downPercent

protectedinherited

downSamples

uint32_t downSamples

protectedinherited

factor

float factor

protectedinherited

info

AudioInfo info

protectedinherited

playMs

uint32_t playMs

protectedinherited

playSamples

uint32_t playSamples

protectedinherited

rampDownDec

float rampDownDec

protectedinherited

rampUpInc

float rampUpInc

protectedinherited

ring_buffer

RingBuffer< uint8_t > ring_buffer

protectedinherited

upMs

uint32_t upMs

protectedinherited

upPercent

uint8_t upPercent

protectedinherited

upSamples

uint32_t upSamples

protectedinherited

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

• src/AudioTools/AudioCodecs/CodecOpusOgg.h
• src/AudioTools/AudioCodecs/CodecTSDemux.h