jass.generators
Class BiQuadFilterBase

java.lang.Object
  jass.generators.BiQuadFilterBase

All Implemented Interfaces:

Filter

Direct Known Subclasses:

BiQuad

public abstract class BiQuadFilterBase
extends java.lang.Object
implements Filter

Biquad Filter, low level implementation without calculating coefficients See bottom for details. This implementation has normalized a0=1

Author:

Kees van den Doel (kvdoel@cs.ubc.ca)

Field Summary

protected float	a1 Defining coefficients, will be set in superclasses
protected float	a2 Defining coefficients, will be set in superclasses
protected float	b0 Defining coefficients, will be set in superclasses
protected float	b1 Defining coefficients, will be set in superclasses
protected float	b2 Defining coefficients, will be set in superclasses
protected float	xt_1 State of filter.
protected float	xt_2 State of filter.
protected float	yt_1 State of filter.
protected float	yt_2 State of filter.

Constructor Summary

BiQuadFilterBase()

Method Summary

void	filter(float[] output, float[] input, int nsamples, int inputOffset) Proces input (may be same as output).
void	reset() Reset state.
void	setComplement(boolean complement)

Methods inherited from class java.lang.Object

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

Field Detail

yt_1

protected float yt_1

State of filter.

yt_2

protected float yt_2

State of filter.

xt_1

protected float xt_1

State of filter.

xt_2

protected float xt_2

State of filter.

a1

protected float a1

Defining coefficients, will be set in superclasses

a2

protected float a2

Defining coefficients, will be set in superclasses

b0

protected float b0

Defining coefficients, will be set in superclasses

b1

protected float b1

Defining coefficients, will be set in superclasses

b2

protected float b2

Defining coefficients, will be set in superclasses

Constructor Detail

BiQuadFilterBase

public BiQuadFilterBase()

Method Detail

setComplement

public void setComplement(boolean complement)

reset

public void reset()

Reset state.

filter

public void filter(float[] output,
                   float[] input,
                   int nsamples,
                   int inputOffset)

Proces input (may be same as output).

Specified by:

filter in interface Filter

Parameters:

output - user provided buffer for returned result.

input - user provided input buffer.

nsamples - number of samples written to output buffer.

inputOffset - where to start in circular buffer input.