AnalogFilter Class Reference

#include <AnalogFilter.h>

Inheritance diagram for AnalogFilter:

Classes
struct	fstage
struct	Coeff

Public Member Functions
	AnalogFilter (unsigned char Ftype, float Ffreq, float Fq, unsigned char Fstages, unsigned int srate, int bufsize)
	~AnalogFilter ()
void	filterout (float *smp)
void	setfreq (float frequency)
void	setfreq_and_q (float frequency, float q_)
void	setq (float q_)
void	settype (int type_)
void	setgain (float dBgain)
void	setstages (int stages_)
void	cleanup ()
float	H (float freq)
Public Member Functions inherited from Filter
	Filter (unsigned int srate, int bufsize)
virtual	~Filter ()

Private Member Functions
void	singlefilterout (float *smp, fstage &hist, const Coeff &coeff)
void	computefiltercoefs (void)

Private Attributes
struct AnalogFilter::fstage	history [MAX_FILTER_STAGES+1]
struct AnalogFilter::fstage	oldHistory [MAX_FILTER_STAGES+1]
struct AnalogFilter::Coeff	coeff
struct AnalogFilter::Coeff	oldCoeff
int	type
int	stages
float	freq
float	q
float	gain
int	order
bool	needsinterpolation
bool	firsttime
bool	abovenq
bool	oldabovenq

Additional Inherited Members
Static Public Member Functions inherited from Filter
static float	getrealfreq (float freqpitch)
static Filter *	generate (class FilterParams *pars, unsigned int srate=0, int bufsize=0)
Public Attributes inherited from Filter
float	a0
float	b1
float	z1
Protected Member Functions inherited from Filter
void	alias ()
Protected Attributes inherited from Filter
float	outgain
unsigned int	samplerate
int	buffersize
float	samplerate_f
float	halfsamplerate_f
float	buffersize_f
int	bufferbytes

Detailed Description

Implementation of Several analog filters (lowpass, highpass...) Implemented with IIR filters Coefficients generated with "Cookbook formulae for audio EQ"

Constructor & Destructor Documentation

AnalogFilter()

AnalogFilter::AnalogFilter	(	unsigned char	Ftype,
		float	Ffreq,
		float	Fq,
		unsigned char	Fstages,
		unsigned int	srate,
		int	bufsize )

~AnalogFilter()

AnalogFilter::~AnalogFilter

(

)

Member Function Documentation

cleanup()

void AnalogFilter::cleanup

(

)

computefiltercoefs()

void AnalogFilter::computefiltercoefs ( void )

private

filterout()

void AnalogFilter::filterout ( float * smp )

virtual

Implements Filter.

H()

float AnalogFilter::H

(

float

freq

)

setfreq()

void AnalogFilter::setfreq ( float frequency )

virtual

Implements Filter.

setfreq_and_q()

void AnalogFilter::setfreq_and_q ( float frequency, float q_ )

virtual

Implements Filter.

setgain()

void AnalogFilter::setgain ( float dBgain )

virtual

Implements Filter.

setq()

void AnalogFilter::setq ( float q_ )

virtual

Implements Filter.

setstages()

void AnalogFilter::setstages

(

int

stages_

)

settype()

void AnalogFilter::settype

(

int

type_

)

singlefilterout()

void AnalogFilter::singlefilterout ( float * smp, fstage & hist, const Coeff & coeff )

private

Member Data Documentation

abovenq

bool AnalogFilter::abovenq

private

coeff

struct AnalogFilter::Coeff AnalogFilter::coeff

private

firsttime

bool AnalogFilter::firsttime

private

freq

float AnalogFilter::freq

private

gain

float AnalogFilter::gain

private

history

struct AnalogFilter::fstage AnalogFilter::history[MAX_FILTER_STAGES + 1]

private

needsinterpolation

bool AnalogFilter::needsinterpolation

private

oldabovenq

bool AnalogFilter::oldabovenq

private

oldCoeff

struct AnalogFilter::Coeff AnalogFilter::oldCoeff

private

oldHistory

struct AnalogFilter::fstage AnalogFilter::oldHistory[MAX_FILTER_STAGES + 1]

private

order

int AnalogFilter::order

private

q

float AnalogFilter::q

private

stages

int AnalogFilter::stages

private

type

int AnalogFilter::type

private

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

• /home/runner/work/lmms-fork/lmms-fork/plugins/ZynAddSubFx/zynaddsubfx/src/DSP/AnalogFilter.h
• /home/runner/work/lmms-fork/lmms-fork/plugins/ZynAddSubFx/zynaddsubfx/src/DSP/AnalogFilter.cpp