FIR filters

Collaboration diagram for FIR filters:

Classes
class	SPUC::cic< Numeric >
	class for CIC digital filter More...
class	SPUC::farrow< Numeric >
	Template Class for Farrow implementation of a ploynomial interpolation using a FIR filter. More...
class	SPUC::fir< Numeric, Coeff >
	Template Class for Modeling a Finite Impulse Response filter. More...
class	SPUC::fir_adapt< Numeric, Coeff >
	template class fir_adapt Based on FIR class, created to support LMS adaptive filtering More...
class	SPUC::fir_coeff< Numeric >
	Template Class for Modeling a Finite Impulse Response filter. More...
class	SPUC::fir_decim< Numeric, Coeff >
	template class for fir decimation based on FIR class More...
class	SPUC::fir_interp< Numeric, Coeff >
	template class fir_decim based on FIR class More...
class	SPUC::lagrange< Numeric, Coeff >
	Template Lagrange interpolation via FIR Fitler. More...
class	SPUC::remez_fir
	template Remez_fir class More...
class	SPUC::running_sum< Numeric >
	template class running average filter consisting of a delay line, adder and subtractor More...
class	SPUC::scic< Numeric >
	Implementation for sharped cascaded integrator comb filter. More...
class	SPUC::sum_and_dump< Numeric >
	sum and dump filter More...
Functions
void	SPUC::butterworth_fir (fir_coeff< float_type > &butfir, float_type spb)
	Calculate coefficients for FIR assuming butterworth frequency response.
void	SPUC::create_remez_lpfir (fir_coeff< float_type > &remezfir, float_type pass_edge, float_type stop_edge, float_type stop_weight)
	Calculate coefficients for lowpass FIR assuming equiripple frequency response.
void	SPUC::inv_dft_symmetric (smart_array< float_type > h, smart_array< float_type > A, int N)
	Calculate coefficients for FIR using frequency sampling IDFT.
void	SPUC::gaussian_fir (fir_coeff< float_type > &gaussf, float_type bt, float_type spb)
	Calculate coefficients for FIR assuming gaussian frequency response.
template<class T>
void	SPUC::root_raised_cosine (fir_coeff< T > &rcfir, float_type alpha, int rate)
template<>
void	SPUC::root_raised_cosine_quantized (fir_coeff< long > &rcfir, float_type alpha, int rate, int bits, float_type scale)
template<>
void	SPUC::root_raised_cosine_quantized (fir_coeff< float > &rcfir, float_type alpha, int rate, int bits, float_type scale)
template<>
void	SPUC::root_raised_cosine_quantized (fir_coeff< int > &rcfir, float_type alpha, int rate, int bits, float_type scale)
template<>
void	SPUC::root_raised_cosine_quantized (fir_coeff< double > &rcfir, float_type alpha, int rate, int bits, float_type scale)
float_type	SPUC::io (float_type x)
	bessel function for kaiser window
smart_array< float_type >	SPUC::hamming (long nf, float_type alpha, float_type beta)
	hamming window
smart_array< float_type >	SPUC::hanning (long nf)
	hanning window
smart_array< float_type >	SPUC::blackman (long nf)
	Blackman Window .
smart_array< float_type >	SPUC::kaiser (long nf, float_type beta)
	kaiser window
smart_array< float_type >	SPUC::cheby (long nf, long n, long ieo, float_type dp, float_type df, float_type x0)
	dolph chebyshev window design
void	SPUC::chebc (float_type nf, float_type dp, float_type df, float_type n, float_type x0)
	chebyshev window

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Function Documentation

smart_array< float_type > SPUC::blackman

(

long

nf

)

Blackman Window .

Author:

Tony Kirke

void SPUC::butterworth_fir	(	fir_coeff< float_type > &	butfir,
		float_type	spb
	)

Calculate coefficients for FIR assuming butterworth frequency response.

Author:

Tony Kirke, Copyright(c) 2001

Tony Kirke

void SPUC::chebc	(	float_type	nf,
		float_type	dp,
		float_type	df,
		float_type	n,
		float_type	x0
	)

chebyshev window

subroutine to generate chebyshev window parameters when one of the three parameters nf,dp and df is unspecified

Author:

Tony Kirke

smart_array< float_type > SPUC::cheby	(	long	nf,
		long	n,
		long	ieo,
		float_type	dp,
		float_type	df,
		float_type	x0
	)

dolph chebyshev window design

Author:

Tony Kirke

void SPUC::create_remez_lpfir	(	fir_coeff< float_type > &	remezfir,
		float_type	edge,
		float_type	fx,
		float_type	wtx
	)

Calculate coefficients for lowpass FIR assuming equiripple frequency response.

Author:

Tony Kirke, Copyright(c) 2001

Tony Kirke

void SPUC::gaussian_fir	(	fir_coeff< float_type > &	gaussf,
		float_type	bt,
		float_type	spb
	)

Calculate coefficients for FIR assuming gaussian frequency response.

Author:

Tony Kirke, Copyright(c) 2001

Tony Kirke

smart_array< float_type > SPUC::hamming	(	long	nf,
		float_type	alpha,
		float_type	beta
	)

hamming window

Author:

Tony Kirke

smart_array< float_type > SPUC::hanning

(

long

nf

)

hanning window

Author:

Tony Kirke

void SPUC::inv_dft_symmetric	(	smart_array< float_type >	h,
		smart_array< float_type >	A,
		int	N
	)

Calculate coefficients for FIR using frequency sampling IDFT.

Author:

Tony Kirke, Copyright(c) 2001

Tony Kirke

float_type SPUC::io

(

float_type

x

)

bessel function for kaiser window

function: io

smart_array< float_type > SPUC::kaiser	(	long	nf,
		float_type	beta
	)

kaiser window

Author:

Tony Kirke

template<class T>

void SPUC::root_raised_cosine	(	fir_coeff< T > &	rcfir,
		float_type	alpha,
		int	rate
	)

Author:

Tony Kirke

template<>

void SPUC::root_raised_cosine_quantized	(	fir_coeff< double > &	rcfir,
		float_type	alpha,
		int	rate,
		int	bits,
		float_type	scale
	)

template<>

void SPUC::root_raised_cosine_quantized	(	fir_coeff< int > &	rcfir,
		float_type	alpha,
		int	rate,
		int	bits,
		float_type	scale
	)

template<>

void SPUC::root_raised_cosine_quantized	(	fir_coeff< float > &	rcfir,
		float_type	alpha,
		int	rate,
		int	bits,
		float_type	scale
	)

template<>

void SPUC::root_raised_cosine_quantized	(	fir_coeff< long > &	rcfir,
		float_type	alpha,
		int	rate,
		int	bits,
		float_type	scale
	)

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