HIirFilter< T > Class Template Reference

#include <hiirfilter.h>

Inheritance diagram for HIirFilter< T >:

Collaboration diagram for HIirFilter< T >:

Public Member Functions
	HIirFilter (HWriter< T > *writer, float *coefficients, int length, size_t blocksize, HProbe< T > *prope=NULL)
	HIirFilter (HWriterConsumer< T > *consumer, float *coefficients, int length, size_t blocksize, HProbe< T > *probe=NULL)
	HIirFilter (HReader< T > *reader, float *coefficients, int length, size_t blocksize, HProbe< T > *probe=NULL)
	~HIirFilter ()
virtual void	Filter (T *src, T *dest, size_t blocksize)
void	SetCoefficients (float *coefficients, int length)
std::vector< float >	GetCoefficients ()
Public Member Functions inherited from HFilter< T >
	~HFilter ()
int	Write (T *src, size_t blocksize)
int	Read (T *dest, size_t blocksize)
bool	Start ()
bool	Stop ()
bool	Command (HCommand *command)
void	Enable ()
void	Disable ()
bool	GetEnabled ()
Public Member Functions inherited from HObject
	HObject ()
Public Member Functions inherited from HWriter< T >
virtual	~HWriter ()=default
HWriter< T > *	Writer ()
Public Member Functions inherited from HReader< T >
virtual	~HReader ()=default
HReader< T > *	Reader ()
Public Member Functions inherited from HWriterConsumer< T >
HWriterConsumer< T > *	Consumer ()

Static Public Member Functions
static HIirFilter< T > *	Create (HWriter< T > *writer, size_t blocksize, char *coeffsFilename)
static HIirFilter< T > *	Create (HWriterConsumer< T > *consumer, size_t blocksize, char *coeffsFilename)
static HIirFilter< T > *	Create (HReader< T > *reader, size_t blocksize, char *coeffsFilename)
Static Public Member Functions inherited from HFilter< T >
static std::vector< float >	ReadCoeffsFromFile (std::string filename)
static std::vector< float >	ReadCoeffsFromFile (char *filename)

Protected Member Functions
void	Init (float *coefficients, int length)
Protected Member Functions inherited from HFilter< T >
	HFilter (HWriter< T > *writer, size_t blocksize, HProbe< T > *probe=NULL)
	HFilter (HWriterConsumer< T > *consumer, size_t blocksize, HProbe< T > *probe=NULL)
	HFilter (HReader< T > *reader, size_t blocksize, HProbe< T > *probe=NULL)
void	SetWriter (HWriter< T > *writer)

Additional Inherited Members
Protected Attributes inherited from HFilter< T >
int	_blocksize

Detailed Description

template<class T>
class HIirFilter< T >

Generic IIR filter. The filter is implemented in the first direct form.

The coefficients for the filter must be given in the floating point array, and the coefficients must be ordered this way:

b0, b1, b2, b..., bN, a1, a2, a..., aN

Constructor & Destructor Documentation

HIirFilter() [1/3]

template<class T >

HIirFilter< T >::HIirFilter	(	HWriter< T > *	writer,
		float *	coefficients,
		int	length,
		size_t	blocksize,
		HProbe< T > *	prope = NULL
	)

Construct a new HIIrFilter that writes to a writer

HIirFilter() [2/3]

template<class T >

HIirFilter< T >::HIirFilter	(	HWriterConsumer< T > *	consumer,
		float *	coefficients,
		int	length,
		size_t	blocksize,
		HProbe< T > *	probe = NULL
	)

Construct a new HIIrFilter that registers with an upstream writer

HIirFilter() [3/3]

template<class T >

HIirFilter< T >::HIirFilter	(	HReader< T > *	reader,
		float *	coefficients,
		int	length,
		size_t	blocksize,
		HProbe< T > *	probe = NULL
	)

Construct a new HIirFilter that reads from a reader

~HIirFilter()

template<class T >

HIirFilter< T >::~HIirFilter

Default destructor

Member Function Documentation

Create() [1/3]

template<class T >

static HIirFilter<T>* HIirFilter< T >::Create ( HReader< T > *  reader, size_t  blocksize, char *  coeffsFilename  )

inlinestatic

Factory function: Create a new HIirFilter that reads from a reader, by reading the coefficients from a file

Create() [2/3]

template<class T >

static HIirFilter<T>* HIirFilter< T >::Create ( HWriter< T > *  writer, size_t  blocksize, char *  coeffsFilename  )

inlinestatic

Factory function: Create a new HIirFilter, that writes to a writer, by reading the coefficients from a file

Create() [3/3]

template<class T >

static HIirFilter<T>* HIirFilter< T >::Create ( HWriterConsumer< T > *  consumer, size_t  blocksize, char *  coeffsFilename  )

inlinestatic

Factory function: Create a new HIirFilter, that registers with an upstream writer, by reading the coefficients from a file

Filter()

template<class T >

void HIirFilter< T >::Filter ( T *  src, T *  dest, size_t  blocksize  )

virtual

Run a block of samples through the filter

Implements HFilter< T >.

Reimplemented in HBiQuadFilter< BIQUAD, T >, HBiQuadFilter< HLowpassBiQuad< T >, T >, and HBiQuadFilter< HHighpassBiQuad< T >, T >.

GetCoefficients()

template<class T >

std::vector<float> HIirFilter< T >::GetCoefficients ( )

inline

Get the filter coefficients. The coefficients is returned in the order: b0, b1, b2, ..., bN, a1, a2, ..., aN

Init()

template<class T >

void HIirFilter< T >::Init ( float *  coefficients, int  length  )

protected

Initialize the filter

SetCoefficients()

template<class T >

void HIirFilter< T >::SetCoefficients	(	float *	coefficients,
		int	length
	)

Set the coefficients of the filter. The coefficients must be provided in the order: b0, b1, b2, ..., bN, a1, a2, ..., aN

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

• /home/henrik/Git/Hardt/hardt/libhardt/include/hiirfilter.h
• /home/henrik/Git/Hardt/hardt/libhardt/filters/hiirfilter.cpp