de.gsi.math.filter.iir

Class Biquad

java.lang.Object

de.gsi.math.filter.iir.Biquad

public class Biquad
extends Object

Contains the coefficients of a 2nd order digital filter with two poles and two zeros

Field Summary

Fields

Modifier and Type	Field and Description
double	mA0
double	mA1
double	mA2
double	mB0
double	mB1
double	mB2

Constructor Summary

Constructors

Constructor and Description
Biquad()

Method Summary

Modifier and Type	Method and Description
void	applyScale(double scale)
double	getA0()
double	getA1()
double	getA2()
double	getB0()
double	getB1()
double	getB2()
org.apache.commons.math3.complex.Complex	response(double normalizedFrequency)
void	setCoefficients(double a0, double a1, double a2, double b0, double b1, double b2)
void	setIdentity()
void	setOnePole(org.apache.commons.math3.complex.Complex pole, org.apache.commons.math3.complex.Complex zero)
void	setPoleZeroForm(BiquadPoleState bps)
void	setPoleZeroPair(PoleZeroPair pair)
void	setTwoPole(org.apache.commons.math3.complex.Complex pole1, org.apache.commons.math3.complex.Complex zero1, org.apache.commons.math3.complex.Complex pole2, org.apache.commons.math3.complex.Complex zero2)

Methods inherited from class java.lang.Object

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

Field Detail

mA0

public double mA0

mA1

public double mA1

mA2

public double mA2

mB1

public double mB1

mB2

public double mB2

mB0

public double mB0

Constructor Detail

Biquad

public Biquad()

Method Detail

applyScale

public void applyScale(double scale)

getA0

public double getA0()

getA1

public double getA1()

getA2

public double getA2()

getB0

public double getB0()

getB1

public double getB1()

getB2

public double getB2()

response

public org.apache.commons.math3.complex.Complex response(double normalizedFrequency)

setCoefficients

public void setCoefficients(double a0,
                            double a1,
                            double a2,
                            double b0,
                            double b1,
                            double b2)

setIdentity

public void setIdentity()

setOnePole

public void setOnePole(org.apache.commons.math3.complex.Complex pole,
                       org.apache.commons.math3.complex.Complex zero)

setPoleZeroForm

public void setPoleZeroForm(BiquadPoleState bps)

setPoleZeroPair

public void setPoleZeroPair(PoleZeroPair pair)

setTwoPole

public void setTwoPole(org.apache.commons.math3.complex.Complex pole1,
                       org.apache.commons.math3.complex.Complex zero1,
                       org.apache.commons.math3.complex.Complex pole2,
                       org.apache.commons.math3.complex.Complex zero2)