krotos::MelFrequencySpectrum Class Reference

#include <MelFrequencySpectrum.h>

Public Member Functions
	MelFrequencySpectrum ()
void	setSamplingFrequency (int fs)
void	setParameters (int audioFrameSize, int numCoeffs)
std::vector< float >	calculateMelSpectrum (std::vector< float > magnitudeSpectrum)
void	buildMelFilterbank ()

Static Private Member Functions
static float	m_hertzToMel (float f)
static float	m_melToHertz (float m)

Private Attributes
int	m_numCoefficients
int	m_fftSize
int	m_magnitudeSpectrumSize
int	m_samplingFrequency
std::vector< std::vector< float > >	m_melFilterBank

Constructor & Destructor Documentation

MelFrequencySpectrum()

krotos::MelFrequencySpectrum::MelFrequencySpectrum

(

)

Constructor

Copyright Krotos LTD 2015

All rights reserved.

Member Function Documentation

buildMelFilterbank()

void krotos::MelFrequencySpectrum::buildMelFilterbank

(

)

Builds the Mel filter bank

calculateMelSpectrum()

std::vector< float > krotos::MelFrequencySpectrum::calculateMelSpectrum

(

std::vector< float >

magnitudeSpectrum

)

Calcualtes the mel spectrum from the magnitude spectrum given

m_hertzToMel()

float krotos::MelFrequencySpectrum::m_hertzToMel ( float f )

staticprivate

m_melToHertz()

float krotos::MelFrequencySpectrum::m_melToHertz ( float m )

staticprivate

setParameters()

void krotos::MelFrequencySpectrum::setParameters	(	int	audioFrameSize,
		int	numCoeffs )

Sets the audio frame size and number of Mel-frequency coefficients

setSamplingFrequency()

void krotos::MelFrequencySpectrum::setSamplingFrequency

(

int

fs

)

Sets the sampling frequency

Parameters

fs	the sampling frequency

Member Data Documentation

m_fftSize

int krotos::MelFrequencySpectrum::m_fftSize

private

m_magnitudeSpectrumSize

int krotos::MelFrequencySpectrum::m_magnitudeSpectrumSize

private

m_melFilterBank

std::vector<std::vector<float> > krotos::MelFrequencySpectrum::m_melFilterBank

private

m_numCoefficients

int krotos::MelFrequencySpectrum::m_numCoefficients

private

m_samplingFrequency

int krotos::MelFrequencySpectrum::m_samplingFrequency

private

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

• krotos_dsp/utilities/analysis_modules/frequency_domain_analysis/MelFrequencySpectrum.h
• krotos_dsp/utilities/analysis_modules/frequency_domain_analysis/MelFrequencySpectrum.cpp