DecimatorB Class Reference

#include <DecimatorB.h>

Public Member Functions
void	process (const double *src, double *dst)
void	process (const float *src, float *dst)
	DecimatorB (int inLength, int decFactor)
virtual	~DecimatorB ()
int	getFactor () const

Private Member Functions
void	deInitialise ()
void	initialise (int inLength, int decFactor)
void	doAntiAlias (const double *src, double *dst, int length, int filteridx)
void	doProcess ()

Private Attributes
int	m_inputLength
int	m_outputLength
int	m_decFactor
std::vector< std::vector< double > >	m_o
double	m_a [7]
double	m_b [7]
double *	m_aaBuffer
double *	m_tmpBuffer

Detailed Description

DecimatorB carries out a fast downsample by a power-of-two factor. It only knows how to decimate by a factor of 2, and will use repeated decimation for higher factors. A Butterworth filter of order 6 is used for the lowpass filter.

Definition at line 25 of file DecimatorB.h.

Constructor & Destructor Documentation

DecimatorB()

DecimatorB::DecimatorB	(	int	inLength,
		int	decFactor
	)

Construct a DecimatorB to operate on input blocks of length inLength, with decimation factor decFactor. inLength should be a multiple of decFactor. Output blocks will be of length inLength / decFactor.

decFactor must be a power of two.

~DecimatorB()

virtual DecimatorB::~DecimatorB ( )

virtual

Member Function Documentation

deInitialise()

void DecimatorB::deInitialise ( )

private

doAntiAlias()

void DecimatorB::doAntiAlias ( const double *  src, double *  dst, int  length, int  filteridx  )

private

doProcess()

void DecimatorB::doProcess ( )

private

getFactor()

int DecimatorB::getFactor ( ) const

inline

Definition at line 42 of file DecimatorB.h.

initialise()

void DecimatorB::initialise ( int  inLength, int  decFactor  )

private

process() [1/2]

void DecimatorB::process	(	const double *	src,
		double *	dst
	)

process() [2/2]

void DecimatorB::process	(	const float *	src,
		float *	dst
	)

Member Data Documentation

m_a

double DecimatorB::m_a[7]

private

Definition at line 56 of file DecimatorB.h.

m_aaBuffer

double* DecimatorB::m_aaBuffer

private

Definition at line 59 of file DecimatorB.h.

m_b

double DecimatorB::m_b[7]

private

Definition at line 57 of file DecimatorB.h.

m_decFactor

int DecimatorB::m_decFactor

private

Definition at line 52 of file DecimatorB.h.

m_inputLength

int DecimatorB::m_inputLength

private

Definition at line 50 of file DecimatorB.h.

m_o

std::vector<std::vector<double> > DecimatorB::m_o

private

Definition at line 54 of file DecimatorB.h.

m_outputLength

int DecimatorB::m_outputLength

private

Definition at line 51 of file DecimatorB.h.

m_tmpBuffer

double* DecimatorB::m_tmpBuffer

private

Definition at line 60 of file DecimatorB.h.

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

• DecimatorB.h