FFTFilter Class Reference

Classical FFT filter, use set to set up data step, min and max frequency and type of the filter (minfreq not required for highpass, maxfreq not required for lowpass) More...

#include <fftfilter.h>

Public Types
enum	Type { LowPass , HighPass , BandPass }

Public Member Functions
	FFTFilter (int sz, float step)
	~FFTFilter ()
bool	apply (Array1DImpl< float > &)
bool	apply (Array1DImpl< float_complex > &, bool dopreproc=true)
Type	getFilterType () const
Array1DImpl< float_complex > *	getFreqDomainArr () const
bool	isHighPass () const
bool	isLowPass () const
void	requestStayInFreqDomain ()
void	setBandPass (float cutf1, float cutf2, float cutf3, float cutf4)
void	setBandPass (float cutf1, float cutf4)
void	setHighPass (float cutf1)
void	setHighPass (float cutf1, float cutf2)
void	setLowPass (float cutf3, float cutf4)
void	setLowPass (float cutf4)
bool	setTimeTaperWindow (int sz, BufferString wintype, float var=0.95)

Protected Member Functions
void	buildFreqTaperWin ()
bool	deTrend (Array1DImpl< float > &outp, bool isimag=false)
bool	deTrend (Array1DImpl< float_complex > &)
bool	interpUdf (Array1DImpl< float > &, bool isimag=false)
bool	interpUdf (Array1DImpl< float_complex > &)
void	reSize (const Array1DImpl< float > &inp, Array1DImpl< float > &outp) const
void	reSize (const Array1DImpl< float_complex > &inp, Array1DImpl< float_complex > &outp) const
void	restoreSize (const Array1DImpl< float > &inp, Array1DImpl< float > &outp) const
void	restoreSize (const Array1DImpl< float_complex > &inp, Array1DImpl< float_complex > &outp) const
bool	restoreTrend (Array1DImpl< float > &outp, bool isimag=false) const
bool	restoreTrend (Array1DImpl< float_complex > &) const
void	restoreUdf (Array1DImpl< float > &, bool isimag=false) const
void	restoreUdf (Array1DImpl< float_complex > &) const

Protected Attributes
float	cutfreq_ [4]
float	df_
Fourier::CC *	fft_
int	fftsz_
Array1DImpl< float_complex > *	freqdomain_
ArrayNDWindow *	freqwindow_
BoolTypeSet	isudfimag_
BoolTypeSet	isudfreal_
bool	stayinfreq_
float	step_
int	sz_
ArrayNDWindow *	timewindow_
Array1DImpl< float > *	trendimag_
Array1DImpl< float > *	trendreal_

Detailed Description

Classical FFT filter, use set to set up data step, min and max frequency and type of the filter (minfreq not required for highpass, maxfreq not required for lowpass)

<>

Member Enumeration Documentation

Type

enum FFTFilter::Type

Enumerator
LowPass
HighPass
BandPass

Constructor & Destructor Documentation

FFTFilter()

FFTFilter::FFTFilter	(	int	sz,
		float	step )

~FFTFilter()

FFTFilter::~FFTFilter

(

)

Member Function Documentation

apply() [1/2]

bool FFTFilter::apply

(

Array1DImpl< float > &

)

apply() [2/2]

bool FFTFilter::apply	(	Array1DImpl< float_complex > &	,
		bool	dopreproc = true )

buildFreqTaperWin()

void FFTFilter::buildFreqTaperWin ( )

protected

deTrend() [1/2]

bool FFTFilter::deTrend ( Array1DImpl< float > & outp, bool isimag = false )

protected

deTrend() [2/2]

bool FFTFilter::deTrend ( Array1DImpl< float_complex > & )

protected

getFilterType()

Type FFTFilter::getFilterType

(

)

const

getFreqDomainArr()

Array1DImpl< float_complex > * FFTFilter::getFreqDomainArr ( ) const

inline

interpUdf() [1/2]

bool FFTFilter::interpUdf ( Array1DImpl< float > & , bool isimag = false )

protected

interpUdf() [2/2]

bool FFTFilter::interpUdf ( Array1DImpl< float_complex > & )

protected

isHighPass()

bool FFTFilter::isHighPass

(

)

const

isLowPass()

bool FFTFilter::isLowPass

(

)

const

requestStayInFreqDomain()

void FFTFilter::requestStayInFreqDomain ( )

inline

reSize() [1/2]

void FFTFilter::reSize ( const Array1DImpl< float > & inp, Array1DImpl< float > & outp ) const

protected

reSize() [2/2]

void FFTFilter::reSize ( const Array1DImpl< float_complex > & inp, Array1DImpl< float_complex > & outp ) const

protected

restoreSize() [1/2]

void FFTFilter::restoreSize ( const Array1DImpl< float > & inp, Array1DImpl< float > & outp ) const

protected

restoreSize() [2/2]

void FFTFilter::restoreSize ( const Array1DImpl< float_complex > & inp, Array1DImpl< float_complex > & outp ) const

protected

restoreTrend() [1/2]

bool FFTFilter::restoreTrend ( Array1DImpl< float > & outp, bool isimag = false ) const

protected

restoreTrend() [2/2]

bool FFTFilter::restoreTrend ( Array1DImpl< float_complex > & ) const

protected

restoreUdf() [1/2]

void FFTFilter::restoreUdf ( Array1DImpl< float > & , bool isimag = false ) const

protected

restoreUdf() [2/2]

void FFTFilter::restoreUdf ( Array1DImpl< float_complex > & ) const

protected

setBandPass() [1/2]

void FFTFilter::setBandPass	(	float	cutf1,
		float	cutf2,
		float	cutf3,
		float	cutf4 )

setBandPass() [2/2]

void FFTFilter::setBandPass	(	float	cutf1,
		float	cutf4 )

setHighPass() [1/2]

void FFTFilter::setHighPass

(

float

cutf1

)

setHighPass() [2/2]

void FFTFilter::setHighPass	(	float	cutf1,
		float	cutf2 )

setLowPass() [1/2]

void FFTFilter::setLowPass	(	float	cutf3,
		float	cutf4 )

setLowPass() [2/2]

void FFTFilter::setLowPass

(

float

cutf4

)

setTimeTaperWindow()

bool FFTFilter::setTimeTaperWindow	(	int	sz,
		BufferString	wintype,
		float	var = 0.95 )

Member Data Documentation

cutfreq_

float FFTFilter::cutfreq_[4]

protected

df_

float FFTFilter::df_

protected

fft_

Fourier::CC* FFTFilter::fft_

protected

fftsz_

int FFTFilter::fftsz_

protected

freqdomain_

Array1DImpl<float_complex>* FFTFilter::freqdomain_

protected

freqwindow_

ArrayNDWindow* FFTFilter::freqwindow_

protected

isudfimag_

BoolTypeSet FFTFilter::isudfimag_

protected

isudfreal_

BoolTypeSet FFTFilter::isudfreal_

protected

stayinfreq_

bool FFTFilter::stayinfreq_

protected

step_

float FFTFilter::step_

protected

sz_

int FFTFilter::sz_

protected

timewindow_

ArrayNDWindow* FFTFilter::timewindow_

protected

trendimag_

Array1DImpl<float>* FFTFilter::trendimag_

protected

trendreal_

Array1DImpl<float>* FFTFilter::trendreal_

protected