LRFilterBank Class Reference

The LRFilterBank object implements 2 Linkwitz-Riley Filters in a parallel filter bank to split the signal into two frequency bands. Note that one channel is inverted (see the FX book below for explanation). You can add more bands here as well. More...

#include <fxobjects.h>

Inheritance diagram for LRFilterBank:

Public Member Functions
virtual bool	reset (double _sampleRate)
virtual bool	canProcessAudioFrame ()
virtual double	processAudioSample (double xn)
FilterBankOutput	processFilterBank (double xn)
LRFilterBankParameters	getParameters ()
void	setParameters (const LRFilterBankParameters &_parameters)
Public Member Functions inherited from IAudioSignalProcessor
virtual bool	reset (double _sampleRate)=0
virtual double	processAudioSample (double xn)=0
virtual bool	canProcessAudioFrame ()=0
virtual void	setSampleRate (double _sampleRate)
virtual void	enableAuxInput (bool enableAuxInput)
virtual double	processAuxInputAudioSample (double xn)
virtual bool	processAudioFrame (const float *inputFrame, float *outputFrame, uint32_t inputChannels, uint32_t outputChannels)

Protected Attributes
AudioFilter	lpFilter
	low-band filter
AudioFilter	hpFilter
	high-band filter
LRFilterBankParameters	parameters
	parameters for the object

Detailed Description

The LRFilterBank object implements 2 Linkwitz-Riley Filters in a parallel filter bank to split the signal into two frequency bands. Note that one channel is inverted (see the FX book below for explanation). You can add more bands here as well.

Audio I/O:

• Processes mono input into a custom FilterBankOutput structure. NOTE: processAudioSample( ) is inoperable and only returns the input back.

Control I/F:

• Use LRFilterBankParameters structure to get/set object params.

Author

Will Pirkle http://www.willpirkle.com

Remarks

This object is included in Designing Audio Effects Plugins in C++ 2nd Ed. by Will Pirkle

Version

Revision : 1.0

Date

Date : 2018 / 09 / 7

Member Function Documentation

canProcessAudioFrame()

virtual bool LRFilterBank::canProcessAudioFrame ( )

inlinevirtual

return false: this object only processes samples

Implements IAudioSignalProcessor.

getParameters()

LRFilterBankParameters LRFilterBank::getParameters ( )

inline

get parameters: note use of custom structure for passing param data

Returns

LRFilterBankParameters custom data structure

processAudioSample()

virtual double LRFilterBank::processAudioSample ( double  xn )

inlinevirtual

this does nothing for this object, see processFilterBank( ) below

Parameters

xn

input

Returns

the processed sample

Implements IAudioSignalProcessor.

processFilterBank()

FilterBankOutput LRFilterBank::processFilterBank ( double  xn )

inline

process the filter bank

reset()

virtual bool LRFilterBank::reset ( double  _sampleRate )

inlinevirtual

reset member objects

Implements IAudioSignalProcessor.

setParameters()

void LRFilterBank::setParameters ( const LRFilterBankParameters &  _parameters )

inline

set parameters: note use of custom structure for passing param data

Parameters

LRFilterBankParameters

custom data structure

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

• C:/RackAFX_v7/ASPIK_Doxygen/PluginObjects/fxobjects.h