de.quippy.javamod.mixer.dsp.iir.filter

Class IIRBandpassFilter

java.lang.Object

de.quippy.javamod.mixer.dsp.iir.filter.IIRFilterBase

de.quippy.javamod.mixer.dsp.iir.filter.IIRBandpassFilter

public class IIRBandpassFilter
extends IIRFilterBase

Optimized IIR bandpass filter with only 3 multiplies per sample Used for each band of the graphic equalizer.

Author:

Daniel Becker

Field Summary

Fields inherited from class de.quippy.javamod.mixer.dsp.iir.filter.IIRFilterBase

alpha, amplitudeAdj, beta, frequency, gamma, HISTORYSIZE, inArray, outArray, sampleRate

Constructor Summary

Constructors

Constructor and Description
IIRBandpassFilter() Default Constructor - to already set the GAIN

Method Summary

Methods

Modifier and Type	Method and Description
void	initialize(int sampleRate, int channels, int frequency, float parameter) Call this to initialize.
protected float	performFilterCalculation(float sample, int channel, int iIndex, int jIndex, int kIndex)

Methods inherited from class de.quippy.javamod.mixer.dsp.iir.filter.IIRFilterBase

calcRadiansPerSample, clearHistory, getAmplitudeAdj, getGain, getIIRDBValueFrom, getIIRDecimalValueFrom, getThetaZero, setAmplitudeAdj, setGain

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

IIRBandpassFilter

public IIRBandpassFilter()

Default Constructor - to already set the GAIN

Since:

09.01.2012

Method Detail

initialize

public void initialize(int sampleRate,
              int channels,
              int frequency,
              float parameter)

Description copied from class: IIRFilterBase

Call this to initialize. Will set the memory to 0

Overrides:

initialize in class IIRFilterBase

Parameters:

sampleRate -

channels -

frequency -

parameter -

Since:

09.01.2012

See Also:

IIRFilterBase.initialize(int, int, int, float)

performFilterCalculation

protected float performFilterCalculation(float sample,
                             int channel,
                             int iIndex,
                             int jIndex,
                             int kIndex)

Specified by:

performFilterCalculation in class IIRFilterBase

Parameters:

sample -

channel -

iIndex -

jIndex -

kIndex -

Returns:

Since:

12.01.2012

See Also:

IIRFilterBase.performFilterCalculation(float, int, int, int, int)