com.jsyn.unitgen

Class PhaseShifter

java.lang.Object

com.jsyn.unitgen.UnitGenerator

com.jsyn.unitgen.UnitFilter

com.jsyn.unitgen.PhaseShifter

All Implemented Interfaces:

UnitSink, UnitSource

public class PhaseShifter
extends UnitFilter

PhaseShifter effects processor. This unit emulates a common guitar pedal effect but without the LFO modulation. You can use your own modulation source connected to the "offset" port. Different frequencies are phase shifted varying amounts using a series of AllPass filters. By feeding the output back to the input we can get varying phase cancellation. This implementation was based on code posted to the music-dsp archive by Ross Bencina. http://www.musicdsp.org/files/phaser.cpp

Author:

(C) 2014 Phil Burk, Mobileer Inc

See Also:

FilterLowPass, FilterAllPass, RangeConverter

Field Summary

Fields

Modifier and Type	Field and Description
UnitInputPort	depth
UnitInputPort	feedback
UnitInputPort	offset Connect an oscillator to this port to sweep the phase.

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
PhaseShifter()
PhaseShifter(int numStages)

Method Summary

Modifier and Type	Method and Description
void	generate(int start, int limit) Perform essential synthesis function.

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

Field Detail

offset

public UnitInputPort offset

Connect an oscillator to this port to sweep the phase. A range of 0.05 to 0.4 is a good start.

feedback

public UnitInputPort feedback

depth

public UnitInputPort depth

Constructor Detail

PhaseShifter

public PhaseShifter()

PhaseShifter

public PhaseShifter(int numStages)

Method Detail

generate

public void generate(int start,
                     int limit)

Description copied from class: UnitGenerator

Perform essential synthesis function.

Specified by:

generate in class UnitGenerator

Parameters:

start - offset into port buffers

limit - limit offset into port buffers for loop