Template for 2nd Order IIR filter. More...

#include <iir_2nd.h>

Collaboration diagram for SPUC::iir_2nd< Numeric, Coeff >:

Public Types
typedef mixed_type< Numeric, Coeff >::dtype	sum_type

Public Member Functions
	iir_2nd (Coeff B0, Coeff B1, Coeff B2, Coeff A1, Coeff A2, long b=0)

	iir_2nd (Coeff A1=0, Coeff A2=0)

void	set_round_bits (long x)

int	get_round_bits ()

Coeff	get_b0 ()

Coeff	get_b1 ()

Coeff	get_b2 ()

Coeff	get_a1 ()

Coeff	get_a2 ()

void	reset ()

void	set_a (Coeff A1, Coeff A2)

void	set_b (Coeff A1, Coeff A2)

void	set_coeffs (Coeff B0, Coeff B1, Coeff B2, Coeff A1, Coeff A2)

	iir_2nd (const char *file)
	Constructor reading coefficients from a file. More...

void	print ()
	Print out coefficients. More...

Numeric	clock (Numeric input)
	Input new sample and calculate output. More...

Public Attributes
Numeric	fb2

Numeric	fb1

Numeric	fb0

Protected Attributes
long	round_bits

Coeff	b0

Coeff	b1

Coeff	b2

Coeff	a1

Coeff	a2

Numeric	in [3]

quantiser< Coeff >	Q

Detailed Description

template<class Numeric, class Coeff = float_type>
class SPUC::iir_2nd< Numeric, Coeff >

Template for 2nd Order IIR filter.

The filter is assumed to be a low pass 2nd order digital filter of the form $G(z) = \frac{b0*z^2 + b1*z+b2}{(z^2+a1*z+a2)}$

Author: Tony Kirke

Member Typedef Documentation

template<class Numeric, class Coeff = float_type>

typedef mixed_type<Numeric,Coeff>::dtype SPUC::iir_2nd< Numeric, Coeff >::sum_type

Constructor & Destructor Documentation

template<class Numeric, class Coeff = float_type>

SPUC::iir_2nd< Numeric, Coeff >::iir_2nd	(	Coeff	B0,
		Coeff	B1,
		Coeff	B2,
		Coeff	A1,
		Coeff	A2,
		long	b = `0`
	)

inline

References SPUC::iir_2nd< Numeric, Coeff >::reset().

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template<class Numeric, class Coeff = float_type>

SPUC::iir_2nd< Numeric, Coeff >::iir_2nd	(	Coeff	A1 = `0`,
		Coeff	A2 = `0`
	)

inline

References SPUC::iir_2nd< Numeric, Coeff >::reset().

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template<class Numeric, class Coeff = float_type>

SPUC::iir_2nd< Numeric, Coeff >::iir_2nd ( const char * file )

inline

Constructor reading coefficients from a file.

References SPUC::iir_2nd< Numeric, Coeff >::a1, SPUC::iir_2nd< Numeric, Coeff >::a2, SPUC::iir_2nd< Numeric, Coeff >::b0, SPUC::iir_2nd< Numeric, Coeff >::b1, SPUC::iir_2nd< Numeric, Coeff >::b2, and SPUC::iir_2nd< Numeric, Coeff >::reset().

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Member Function Documentation

template<class Numeric, class Coeff = float_type>

Numeric SPUC::iir_2nd< Numeric, Coeff >::clock ( Numeric input )

inline

Input new sample and calculate output.

References SPUC::iir_2nd< Numeric, Coeff >::fb0, SPUC::iir_2nd< Numeric, Coeff >::fb1, SPUC::iir_2nd< Numeric, Coeff >::fb2, and SPUC::iir_2nd< Numeric, Coeff >::Q.

Referenced by SPUC::notch_iir< Numeric, Coeff >::clock(), and main().

template<class Numeric, class Coeff = float_type>

Coeff SPUC::iir_2nd< Numeric, Coeff >::get_a1 ( )

inline

Referenced by SPUC::notch_iir< Numeric, Coeff >::set_freq().

template<class Numeric, class Coeff = float_type>

Coeff SPUC::iir_2nd< Numeric, Coeff >::get_a2 ( )

inline

template<class Numeric, class Coeff = float_type>

Coeff SPUC::iir_2nd< Numeric, Coeff >::get_b0 ( )

inline

template<class Numeric, class Coeff = float_type>

Coeff SPUC::iir_2nd< Numeric, Coeff >::get_b1 ( )

inline

template<class Numeric, class Coeff = float_type>

Coeff SPUC::iir_2nd< Numeric, Coeff >::get_b2 ( )

inline

Referenced by SPUC::notch_iir< Numeric, Coeff >::set_depth().

template<class Numeric, class Coeff = float_type>

int SPUC::iir_2nd< Numeric, Coeff >::get_round_bits ( )

inline

template<class Numeric, class Coeff = float_type>

void SPUC::iir_2nd< Numeric, Coeff >::print ( void )

inline

Print out coefficients.

References SPUC::iir_2nd< Numeric, Coeff >::a1, SPUC::iir_2nd< Numeric, Coeff >::a2, SPUC::iir_2nd< Numeric, Coeff >::b0, SPUC::iir_2nd< Numeric, Coeff >::b1, and SPUC::iir_2nd< Numeric, Coeff >::b2.

Referenced by main().

template<class Numeric, class Coeff = float_type>

void SPUC::iir_2nd< Numeric, Coeff >::reset ( void )

inline

Referenced by SPUC::iir_2nd< Numeric, Coeff >::iir_2nd().

template<class Numeric, class Coeff = float_type>

void SPUC::iir_2nd< Numeric, Coeff >::set_a	(	Coeff	A1,
		Coeff	A2
	)

inline

template<class Numeric, class Coeff = float_type>

void SPUC::iir_2nd< Numeric, Coeff >::set_b	(	Coeff	A1,
		Coeff	A2
	)

inline

template<class Numeric, class Coeff = float_type>

void SPUC::iir_2nd< Numeric, Coeff >::set_coeffs	(	Coeff	B0,
		Coeff	B1,
		Coeff	B2,
		Coeff	A1,
		Coeff	A2
	)

inline

Referenced by main(), SPUC::notch_iir< Numeric, Coeff >::set_coeffs(), SPUC::notch_iir< Numeric, Coeff >::set_depth(), and SPUC::notch_iir< Numeric, Coeff >::set_freq().

template<class Numeric, class Coeff = float_type>

void SPUC::iir_2nd< Numeric, Coeff >::set_round_bits ( long x )

inline

References SPUC::quantiser< Numeric >::set_bits().

Referenced by main().

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Member Data Documentation

template<class Numeric, class Coeff = float_type>

Coeff SPUC::iir_2nd< Numeric, Coeff >::a1

protected

Referenced by SPUC::iir_2nd< Numeric, Coeff >::iir_2nd(), main(), and SPUC::iir_2nd< Numeric, Coeff >::print().

template<class Numeric, class Coeff = float_type>

Coeff SPUC::iir_2nd< Numeric, Coeff >::a2

protected

Referenced by SPUC::iir_2nd< Numeric, Coeff >::iir_2nd(), main(), and SPUC::iir_2nd< Numeric, Coeff >::print().

template<class Numeric, class Coeff = float_type>

Coeff SPUC::iir_2nd< Numeric, Coeff >::b0

protected

Referenced by SPUC::iir_2nd< Numeric, Coeff >::iir_2nd(), main(), and SPUC::iir_2nd< Numeric, Coeff >::print().

template<class Numeric, class Coeff = float_type>

Coeff SPUC::iir_2nd< Numeric, Coeff >::b1

protected

Referenced by SPUC::iir_2nd< Numeric, Coeff >::iir_2nd(), main(), and SPUC::iir_2nd< Numeric, Coeff >::print().

template<class Numeric, class Coeff = float_type>

Coeff SPUC::iir_2nd< Numeric, Coeff >::b2

protected

Referenced by SPUC::iir_2nd< Numeric, Coeff >::iir_2nd(), main(), and SPUC::iir_2nd< Numeric, Coeff >::print().

template<class Numeric, class Coeff = float_type>

Numeric SPUC::iir_2nd< Numeric, Coeff >::fb0

Referenced by SPUC::iir_2nd< Numeric, Coeff >::clock().

template<class Numeric, class Coeff = float_type>

Numeric SPUC::iir_2nd< Numeric, Coeff >::fb1

Referenced by SPUC::iir_2nd< Numeric, Coeff >::clock().

template<class Numeric, class Coeff = float_type>

Numeric SPUC::iir_2nd< Numeric, Coeff >::fb2

Referenced by SPUC::iir_2nd< Numeric, Coeff >::clock(), and main().

template<class Numeric, class Coeff = float_type>

Numeric SPUC::iir_2nd< Numeric, Coeff >::in[3]

protected

template<class Numeric, class Coeff = float_type>

quantiser<Coeff> SPUC::iir_2nd< Numeric, Coeff >::Q

protected

Referenced by SPUC::iir_2nd< Numeric, Coeff >::clock().

template<class Numeric, class Coeff = float_type>

long SPUC::iir_2nd< Numeric, Coeff >::round_bits

protected

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

iir_2nd.h

Public Types

Public Member Functions

Public Attributes

Protected Attributes

Detailed Description

template<class Numeric, class Coeff = float_type> class SPUC::iir_2nd< Numeric, Coeff >

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation

template<class Numeric, class Coeff = float_type>
class SPUC::iir_2nd< Numeric, Coeff >