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...

Public Types
enum	Type { LowPass, HighPass, BandPass }

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

Public Attributes
float	cutf4

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

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

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

enum FFTFilter::Type

Enumerator
LowPass
HighPass
BandPass

Constructor & Destructor Documentation

FFTFilter::FFTFilter	(	int	sz,
		float	step
	)

FFTFilter::~FFTFilter

(

)

Member Function Documentation

bool FFTFilter::apply

(

Array1DImpl< float > &

)

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

void FFTFilter::buildFreqTaperWin ( )

protected

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

protected

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

protected

Type FFTFilter::getFilterType

(

)

const

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

inline

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

protected

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

protected

bool FFTFilter::isHighPass

(

)

const

bool FFTFilter::isLowPass

(

)

const

FFTFilter::mDeclareEnumUtils

(

Type

)

void FFTFilter::requestStayInFreqDomain ( )

inline

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

protected

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

protected

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

protected

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

protected

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

protected

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

protected

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

protected

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

protected

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

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

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

void FFTFilter::setHighPass

(

float

cutf1

)

void FFTFilter::setLowPass

(

float

cutf4

)

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

Member Data Documentation

float FFTFilter::cutf4

float FFTFilter::cutfreq_[4]

protected

float FFTFilter::df_

protected

Fourier::CC* FFTFilter::fft_

protected

int FFTFilter::fftsz_

protected

Array1DImpl<float_complex>* FFTFilter::freqdomain_

protected

ArrayNDWindow* FFTFilter::freqwindow_

protected

BoolTypeSet FFTFilter::isudfimag_

protected

BoolTypeSet FFTFilter::isudfreal_

protected

bool FFTFilter::stayinfreq_

protected

float FFTFilter::step_

protected

int FFTFilter::sz_

protected

ArrayNDWindow* FFTFilter::timewindow_

protected

Array1DImpl<float>* FFTFilter::trendimag_

protected

Array1DImpl<float>* FFTFilter::trendreal_

protected