sp::resampling< T1 > Class Template Reference

#include <resampling.h>

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Public Member Functions
	resampling (const arma::uword _P, const arma::uword _Q, const arma::vec _H)
	resampling (const arma::uword _P, const arma::uword _Q)
	~resampling ()
void	downfir (const arma::Col< T1 > &in, arma::Col< T1 > &out)
void	upfir (const arma::Col< T1 > &in, arma::Col< T1 > &out)
void	upfirdown (const arma::Col< T1 > &in, arma::Col< T1 > &out)

Private Attributes
FIR_filt< T1, double, T1 >	aa_filt
arma::vec	H
arma::vec	K
arma::uword	P
arma::uword	Q

Detailed Description

template<class T1>
class sp::resampling< T1 >

Implements up/downsampling functions

Definition at line 53 of file resampling.h.

Constructor & Destructor Documentation

resampling() [1/2]

template<class T1 >

sp::resampling< T1 >::resampling ( const arma::uword  _P, const arma::uword  _Q, const arma::vec  _H  )

inline

Constructor.

Parameters

_P	Upsampling rate
_Q	Downsampling rate
_H	FIR filter coefficients

Definition at line 69 of file resampling.h.

References sp::FIR_filt< T1, T2, T3 >::set_coeffs().

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resampling() [2/2]

template<class T1 >

sp::resampling< T1 >::resampling ( const arma::uword  _P, const arma::uword  _Q  )

inline

Constructor using a fir1 filter with 8*M+1 taps and cutoff 1/M where M=max(P,Q)

Parameters

_P	Upsampling rate
_Q	Downsampling rate

Definition at line 84 of file resampling.h.

References sp::fir1(), sp::resampling< T1 >::Q, and sp::FIR_filt< T1, T2, T3 >::set_coeffs().

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~resampling()

template<class T1 >

sp::resampling< T1 >::~resampling ( )

inline

Destructor.

Definition at line 97 of file resampling.h.

Member Function Documentation

downfir()

template<class T1 >

void sp::resampling< T1 >::downfir ( const arma::Col< T1 > &  in, arma::Col< T1 > &  out  )

inline

Downsampling with anti alias filter.

Parameters

in	Input vector
out	Output vector

Definition at line 105 of file resampling.h.

References sp::resampling< T1 >::aa_filt, and sp::resampling< T1 >::Q.

upfir()

template<class T1 >

void sp::resampling< T1 >::upfir ( const arma::Col< T1 > &  in, arma::Col< T1 > &  out  )

inline

Upsampling with anti alias filter.

Parameters

in	Input vector
out	Output vector

Definition at line 122 of file resampling.h.

References sp::resampling< T1 >::aa_filt.

upfirdown()

template<class T1 >

void sp::resampling< T1 >::upfirdown ( const arma::Col< T1 > &  in, arma::Col< T1 > &  out  )

inline

Resampling by a rational P/Q with anti alias filtering.

The caller needs to allocate the input and output vector so that length(out)==length(in)*P/Q

Parameters

in	Input vector
out	Output vector

Definition at line 142 of file resampling.h.

References sp::resampling< T1 >::aa_filt, and sp::resampling< T1 >::Q.

Member Data Documentation

aa_filt

template<class T1 >

FIR_filt<T1, double, T1> sp::resampling< T1 >::aa_filt

private

Definition at line 56 of file resampling.h.

Referenced by sp::resampling< T1 >::downfir(), sp::resampling< T1 >::upfir(), and sp::resampling< T1 >::upfirdown().

H

template<class T1 >

arma::vec sp::resampling< T1 >::H

private

Filter coefficients.

Definition at line 57 of file resampling.h.

K

template<class T1 >

arma::vec sp::resampling< T1 >::K

private

Number of filter coefficients.

Definition at line 58 of file resampling.h.

P

template<class T1 >

arma::uword sp::resampling< T1 >::P

private

Upsampling rate.

Definition at line 59 of file resampling.h.

Q

template<class T1 >

arma::uword sp::resampling< T1 >::Q

private

Downsampling rate.

Definition at line 60 of file resampling.h.

Referenced by sp::resampling< T1 >::downfir(), sp::resampling< T1 >::resampling(), and sp::resampling< T1 >::upfirdown().

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

• resampling.h