org.jscience.media.audio.dsp.filters
Class IIRFilterBase

java.lang.Object
  org.jscience.media.audio.dsp.filters.IIRFilterBase

Direct Known Subclasses:

IIRBandpassFilter, IIRHighpassFilter, IIRLowpassFilter

public abstract class IIRFilterBase
extends java.lang.Object

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Field Summary

protected double	alpha DOCUMENT ME!
protected double	amplitudeAdj DOCUMENT ME!
protected double	beta DOCUMENT ME!
protected double	gamma DOCUMENT ME!
protected static int	HISTORYSIZE DOCUMENT ME!
protected int	iIndex DOCUMENT ME!
protected double[]	inArray DOCUMENT ME!
protected int	jIndex DOCUMENT ME!
protected int	kIndex DOCUMENT ME!
protected double[]	outArray DOCUMENT ME!

Constructor Summary

IIRFilterBase(double alpha, double beta, double gamma)
Creates a new IIRFilterBase object.

IIRFilterBase(IIRFilterDesignBase fdb)
Creates a new IIRFilterBase object.

Method Summary

abstract void	doFilter(short[] inBuffer, double[] outBuffer, int length) DOCUMENT ME!
void	setAlpha(double alpha) DOCUMENT ME!
void	setAmplitudeAdj(double amplitudeAdj) DOCUMENT ME!
void	setBeta(double beta) DOCUMENT ME!
void	setGamma(double gamma) DOCUMENT ME!
void	updateFilterCoefficients(IIRFilterDesignBase fdb) DOCUMENT ME!

Methods inherited from class java.lang.Object

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

Field Detail

HISTORYSIZE

protected static final int HISTORYSIZE

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See Also:

Constant Field Values

alpha

protected double alpha

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beta

protected double beta

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gamma

protected double gamma

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amplitudeAdj

protected double amplitudeAdj

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inArray

protected double[] inArray

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outArray

protected double[] outArray

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iIndex

protected int iIndex

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jIndex

protected int jIndex

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kIndex

protected int kIndex

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Constructor Detail

IIRFilterBase

public IIRFilterBase(double alpha,
                     double beta,
                     double gamma)

Creates a new IIRFilterBase object.

Parameters:

alpha - DOCUMENT ME!

beta - DOCUMENT ME!

gamma - DOCUMENT ME!

IIRFilterBase

public IIRFilterBase(IIRFilterDesignBase fdb)

Creates a new IIRFilterBase object.

Parameters:

fdb - DOCUMENT ME!

Method Detail

updateFilterCoefficients

public void updateFilterCoefficients(IIRFilterDesignBase fdb)

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Parameters:

fdb - DOCUMENT ME!

setAlpha

public void setAlpha(double alpha)

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Parameters:

alpha - DOCUMENT ME!

setBeta

public void setBeta(double beta)

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Parameters:

beta - DOCUMENT ME!

setGamma

public void setGamma(double gamma)

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Parameters:

gamma - DOCUMENT ME!

doFilter

public abstract void doFilter(short[] inBuffer,
                              double[] outBuffer,
                              int length)

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Parameters:

inBuffer - DOCUMENT ME!

outBuffer - DOCUMENT ME!

length - DOCUMENT ME!

setAmplitudeAdj

public void setAmplitudeAdj(double amplitudeAdj)

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Parameters:

amplitudeAdj - DOCUMENT ME!