lmms::EqFilter Class Reference

The EqFilter class. A wrapper for the StereoBiQuad class, giving it freq, res, and gain controls. Used on a per channel per frame basis with recalculation of coefficents upon parameter changes. The intention is to use this as a bass class, children override the calcCoefficents() function, providing the coefficents a1, a2, b0, b1, b2. More...

#include <EqFilter.h>

Inheritance diagram for lmms::EqFilter:

Public Member Functions
	EqFilter ()
virtual void	setSampleRate (int sampleRate)
virtual void	setFrequency (float freq)
virtual void	setQ (float res)
virtual void	setGain (float gain)
virtual void	setParameters (float sampleRate, float freq, float res, float gain)
float	update (float in, ch_cnt_t ch, float frameProgress)
	update filters using two BiQuads, then crossfades, depending on on percentage of period processes

Protected Member Functions
virtual void	calcCoefficents ()
	calcCoefficents Override this in child classes to provide the coefficents, based on Freq, Res and Gain
void	setCoeffs (float a1, float a2, float b0, float b1, float b2)

Protected Attributes
float	m_sampleRate
float	m_freq
float	m_res
float	m_gain
float	m_bw
StereoBiQuad	m_biQuadFrameInitial
StereoBiQuad	m_biQuadFrameTarget

Detailed Description

The EqFilter class. A wrapper for the StereoBiQuad class, giving it freq, res, and gain controls. Used on a per channel per frame basis with recalculation of coefficents upon parameter changes. The intention is to use this as a bass class, children override the calcCoefficents() function, providing the coefficents a1, a2, b0, b1, b2.

Constructor & Destructor Documentation

EqFilter()

lmms::EqFilter::EqFilter ( )

inline

Member Function Documentation

calcCoefficents()

virtual void lmms::EqFilter::calcCoefficents ( )

inlineprotectedvirtual

calcCoefficents Override this in child classes to provide the coefficents, based on Freq, Res and Gain

Reimplemented in lmms::EqHighShelfFilter, lmms::EqHp12Filter, lmms::EqLowShelfFilter, lmms::EqLp12Filter, and lmms::EqPeakFilter.

setCoeffs()

void lmms::EqFilter::setCoeffs ( float a1, float a2, float b0, float b1, float b2 )

inlineprotected

setFrequency()

virtual void lmms::EqFilter::setFrequency ( float freq )

inlinevirtual

setGain()

virtual void lmms::EqFilter::setGain ( float gain )

inlinevirtual

setParameters()

virtual void lmms::EqFilter::setParameters ( float sampleRate, float freq, float res, float gain )

inlinevirtual

Reimplemented in lmms::EqPeakFilter.

setQ()

virtual void lmms::EqFilter::setQ ( float res )

inlinevirtual

setSampleRate()

virtual void lmms::EqFilter::setSampleRate ( int sampleRate )

inlinevirtual

update()

float lmms::EqFilter::update ( float in, ch_cnt_t ch, float frameProgress )

inline

update filters using two BiQuads, then crossfades, depending on on percentage of period processes

Parameters

in
ch
frameProgress	percentage of frame processed

Returns

Member Data Documentation

m_biQuadFrameInitial

StereoBiQuad lmms::EqFilter::m_biQuadFrameInitial

protected

m_biQuadFrameTarget

StereoBiQuad lmms::EqFilter::m_biQuadFrameTarget

protected

m_bw

float lmms::EqFilter::m_bw

protected

m_freq

float lmms::EqFilter::m_freq

protected

m_gain

float lmms::EqFilter::m_gain

protected

m_res

float lmms::EqFilter::m_res

protected

m_sampleRate

float lmms::EqFilter::m_sampleRate

protected

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

• /home/runner/work/lmms-fork/lmms-fork/plugins/Eq/EqFilter.h