com.jsyn.unitgen

Class FilterLowPass

java.lang.Object

com.jsyn.unitgen.UnitGenerator

com.jsyn.unitgen.UnitFilter

com.jsyn.unitgen.TunableFilter

com.jsyn.unitgen.FilterBiquad

com.jsyn.unitgen.FilterBiquadCommon

com.jsyn.unitgen.FilterLowPass

All Implemented Interfaces:

UnitSink, UnitSource

public class FilterLowPass
extends FilterBiquadCommon

Filter that allows frequencies below the center frequency to pass. This filter is based on the BiQuad filter. Coefficients are updated whenever the frequency or Q changes.

Author:

Phil Burk (C) 2009 Mobileer Inc Translated from 'C' to Java by Lisa Tolenti.

Field Summary

Fields inherited from class com.jsyn.unitgen.FilterBiquadCommon

alpha, MINIMUM_Q, Q

Fields inherited from class com.jsyn.unitgen.FilterBiquad

a0, a1, a2, amplitude, b1, b2, cos_omega, MINIMUM_FREQUENCY, MINIMUM_GAIN, omega, previousFrequency, RATIO_MINIMUM, sin_omega

Fields inherited from class com.jsyn.unitgen.TunableFilter

frequency

Fields inherited from class com.jsyn.unitgen.UnitFilter

input, output

Fields inherited from class com.jsyn.unitgen.UnitGenerator

FALSE, PORT_NAME_AMPLITUDE, PORT_NAME_CUTOFF, PORT_NAME_FREQUENCY, PORT_NAME_FREQUENCY_SCALER, PORT_NAME_INPUT, PORT_NAME_OUTPUT, PORT_NAME_PAN, PORT_NAME_PHASE, PORT_NAME_PRESSURE, PORT_NAME_TIMBRE, PORT_NAME_TIME, synthesisEngine, TRUE, VERY_SMALL_FLOAT

Constructor Summary

Constructors

Constructor and Description
FilterLowPass()

Method Summary

Modifier and Type	Method and Description
void	updateCoefficients() This method is by Filter_Biquad to update coefficients for the Filter_LowPass filter.

Methods inherited from class com.jsyn.unitgen.FilterBiquadCommon

computeBiquadCommon, isRecalculationNeeded, recalculate

Methods inherited from class com.jsyn.unitgen.FilterBiquad

calculateOmega, generate, performBiquadFilter

Methods inherited from class com.jsyn.unitgen.UnitFilter

getInput, getOutput

Methods inherited from class com.jsyn.unitgen.UnitGenerator

addPort, addPort, autoStop, convertHalfLifeToMultiplier, convertTimeToRate, flattenOutputs, generate, getCircuit, getFramePeriod, getFrameRate, getId, getPortByName, getPorts, getSynthesisEngine, getSynthesizer, getTopUnit, getUnitGenerator, incrementWrapPhase, isEnabled, isStartRequired, printConnections, printConnections, printConnections, pullData, setCircuit, setEnabled, setFrameRate, setPort, setSynthesisEngine, start, start, start, stop, stop, stop

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.jsyn.unitgen.UnitSink

getUnitGenerator, start, start, stop, stop

Methods inherited from interface com.jsyn.unitgen.UnitSource

getUnitGenerator

Constructor Detail

FilterLowPass

public FilterLowPass()

Method Detail

updateCoefficients

public void updateCoefficients()

This method is by Filter_Biquad to update coefficients for the Filter_LowPass filter.

Specified by:

updateCoefficients in class FilterBiquadCommon