GClasses::GFourierWaveProcessor Class Reference

Detailed Description

This is an abstract class that processes a wave file in blocks. Specifically, it divides the wave file up into overlapping blocks, converts them into Fourier space, calls the abstract "process" method with each block, converts back from Fourier space, and then interpolates to create the wave output.

#include <GWave.h>

Public Member Functions
	GFourierWaveProcessor (size_t blockSize)
	blockSize must be a power of 2. More...
virtual	~GFourierWaveProcessor ()
void	reduce (GWave &signal)
	Transforms signal. More...

Protected Member Functions
void	decodeBlock (GWaveIterator &it, unsigned short chan)
	Convert an array of complex numbers (in temporal space) to the specified channel of a wave file. More...
void	encodeBlock (GWaveIterator &it, struct ComplexNumber *pBuf, unsigned short chan)
	Convert the specified channel from an iterator to an array of complex numbers (in temporal space). More...
void	interpolate (struct ComplexNumber *pPre, struct ComplexNumber *pCur, struct ComplexNumber *pPost, size_t graftSamples)
	Given 3 overlapping blocks (in temporal space), interpolate to create a final block of values. More...
virtual void	process (struct ComplexNumber *pBuf)=0
	pBuf represents a block of m_blockSize complex numbers in Fourier space. This method should transform the block in some way. More...

Protected Attributes
size_t	m_blockSize
struct ComplexNumber *	m_pBufA
struct ComplexNumber *	m_pBufB
struct ComplexNumber *	m_pBufC
struct ComplexNumber *	m_pBufD
struct ComplexNumber *	m_pBufE
struct ComplexNumber *	m_pBufFinal

Constructor & Destructor Documentation

GClasses::GFourierWaveProcessor::GFourierWaveProcessor

(

size_t

blockSize

)

blockSize must be a power of 2.

virtual GClasses::GFourierWaveProcessor::~GFourierWaveProcessor ( )

virtual

Member Function Documentation

void GClasses::GFourierWaveProcessor::decodeBlock ( GWaveIterator &  it, unsigned short  chan  )

protected

Convert an array of complex numbers (in temporal space) to the specified channel of a wave file.

void GClasses::GFourierWaveProcessor::encodeBlock ( GWaveIterator &  it, struct ComplexNumber *  pBuf, unsigned short  chan  )

protected

Convert the specified channel from an iterator to an array of complex numbers (in temporal space).

void GClasses::GFourierWaveProcessor::interpolate ( struct ComplexNumber *  pPre, struct ComplexNumber *  pCur, struct ComplexNumber *  pPost, size_t  graftSamples  )

protected

Given 3 overlapping blocks (in temporal space), interpolate to create a final block of values.

virtual void GClasses::GFourierWaveProcessor::process ( struct ComplexNumber *  pBuf )

protectedpure virtual

pBuf represents a block of m_blockSize complex numbers in Fourier space. This method should transform the block in some way.

void GClasses::GFourierWaveProcessor::reduce

(

GWave &

signal

)

Transforms signal.

Member Data Documentation

size_t GClasses::GFourierWaveProcessor::m_blockSize

protected

struct ComplexNumber* GClasses::GFourierWaveProcessor::m_pBufA

protected

struct ComplexNumber* GClasses::GFourierWaveProcessor::m_pBufB

protected

struct ComplexNumber* GClasses::GFourierWaveProcessor::m_pBufC

protected

struct ComplexNumber* GClasses::GFourierWaveProcessor::m_pBufD

protected

struct ComplexNumber* GClasses::GFourierWaveProcessor::m_pBufE

protected

struct ComplexNumber* GClasses::GFourierWaveProcessor::m_pBufFinal

protected