Filters
Class ButterworthFilter

java.lang.Object
  Filters.FilterMethod
      Filters.ButterworthFilter

public class ButterworthFilter
extends FilterMethod

Author:

Doug Gillespie

Pole Zero calculations for Butterworth filters

Taken from p 179 of Lynn & Fuerst, 1989. Introductory Digital signal Processing

See Also:

IirfFilter

Field Summary

Fields inherited from class Filters.FilterMethod

filterParams, omega1, omega2, omega3, poles, zeros, zeroValue

Constructor Summary

ButterworthFilter(double sampleRate)

Method Summary

(package private) int	calculatePoleZeros()
java.lang.String	filterName()

Methods inherited from class Filters.FilterMethod

calculateOmegaValues, doBandpassTransformation, doBandStopTransformation, getFilterGain, getFilterGainConstant, getFilterPhase, getPoles, getSampleRate, getZeros, mPiTerm, poleZeroCount, setSampleRate

Methods inherited from class java.lang.Object

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

Constructor Detail

ButterworthFilter

public ButterworthFilter(double sampleRate)

Method Detail

filterName

public java.lang.String filterName()

Specified by:

filterName in class FilterMethod

calculatePoleZeros

int calculatePoleZeros()

Specified by:

calculatePoleZeros in class FilterMethod