krotos::Autocorrelation Class Reference

#include <Autocorrelation.h>

Public Member Functions
	Autocorrelation ()
	Autocorrelation (double newSampleRate, int newBufferSize)
	~Autocorrelation ()
float	getPitch (AudioSampleBuffer buffer)
void	initialise (double newSampleRate, int newBufferSize)

Private Member Functions
void	getAutocorrelation (std::vector< float > data)
void	smoothingFilter (std::vector< float > input, float coefficient)
float	getParabolicInterpolation (int estimation)

Private Attributes
const int	MAX_BUFFER_SIZE {1024}
const double	PI {3.14159265358979323846}
const double	TWO_PI {2 * PI}
const double	LOWER_THRESHOLD {0.01}
const float	MAX_FREQ {1000}
const float	MIN_FREQ {20}
const double	DEFAULT_SAMPLE_RATE {44100}
std::vector< float >	audioFrame
std::vector< float >	autocorrelationBuffer
std::vector< float >	smoothedAutocorrelation
std::vector< float >	window
float	pitchEstimate {-1.0f}
float	tauEstimate {-1.0f}
int	position {-1}
int	bufferSize
double	sampleRate

Constructor & Destructor Documentation

Autocorrelation() [1/2]

krotos::Autocorrelation::Autocorrelation

(

)

Autocorrelation() [2/2]

krotos::Autocorrelation::Autocorrelation	(	double	newSampleRate,
		int	newBufferSize )

~Autocorrelation()

krotos::Autocorrelation::~Autocorrelation

(

)

Member Function Documentation

getAutocorrelation()

void krotos::Autocorrelation::getAutocorrelation ( std::vector< float > data )

private

getParabolicInterpolation()

float krotos::Autocorrelation::getParabolicInterpolation ( int estimation )

private

getPitch()

float krotos::Autocorrelation::getPitch

(

AudioSampleBuffer

buffer

)

initialise()

void krotos::Autocorrelation::initialise	(	double	newSampleRate,
		int	newBufferSize )

smoothingFilter()

void krotos::Autocorrelation::smoothingFilter ( std::vector< float > input, float coefficient )

private

Member Data Documentation

audioFrame

std::vector<float> krotos::Autocorrelation::audioFrame

private

autocorrelationBuffer

std::vector<float> krotos::Autocorrelation::autocorrelationBuffer

private

bufferSize

int krotos::Autocorrelation::bufferSize

private

DEFAULT_SAMPLE_RATE

const double krotos::Autocorrelation::DEFAULT_SAMPLE_RATE {44100}

private

LOWER_THRESHOLD

const double krotos::Autocorrelation::LOWER_THRESHOLD {0.01}

private

MAX_BUFFER_SIZE

const int krotos::Autocorrelation::MAX_BUFFER_SIZE {1024}

private

MAX_FREQ

const float krotos::Autocorrelation::MAX_FREQ {1000}

private

MIN_FREQ

const float krotos::Autocorrelation::MIN_FREQ {20}

private

PI

const double krotos::Autocorrelation::PI {3.14159265358979323846}

private

pitchEstimate

float krotos::Autocorrelation::pitchEstimate {-1.0f}

private

position

int krotos::Autocorrelation::position {-1}

private

sampleRate

double krotos::Autocorrelation::sampleRate

private

smoothedAutocorrelation

std::vector<float> krotos::Autocorrelation::smoothedAutocorrelation

private

tauEstimate

float krotos::Autocorrelation::tauEstimate {-1.0f}

private

TWO_PI

const double krotos::Autocorrelation::TWO_PI {2 * PI}

private

window

std::vector<float> krotos::Autocorrelation::window

private

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

• krotos_dsp/utilities/analysis_modules/time_domain_analysis/pitch_tracking/Autocorrelation.h
• krotos_dsp/utilities/analysis_modules/time_domain_analysis/pitch_tracking/Autocorrelation.cpp