com.jsyn.unitgen

Class PinkNoise

java.lang.Object

com.jsyn.unitgen.UnitGenerator

com.jsyn.unitgen.PinkNoise

All Implemented Interfaces:

UnitSource

public class PinkNoise
extends UnitGenerator
implements UnitSource

Random output with 3dB per octave rolloff providing a soft natural noise sound. Generated using Gardner method. Optimization suggested by James McCartney uses a tree to select which random value to replace.

  x x x x x x x x x x x x x x x x 
  x   x   x   x   x   x   x   x   
  x       x       x       x       
  x               x               
  x
 

Tree is generated by counting trailing zeros in an increasing index. When the index is zero, no random number is selected. Author: Phil Burk (C) 1996 SoftSynth.com.

Field Summary

Fields

Modifier and Type	Field and Description
UnitInputPort	amplitude
protected double	currNoise
UnitOutputPort	output
protected double	prevNoise

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
PinkNoise()

Method Summary

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

getUnitGenerator

Field Detail

amplitude

public UnitInputPort amplitude

output

public UnitOutputPort output

prevNoise

protected double prevNoise

currNoise

protected double currNoise

Constructor Detail

PinkNoise

public PinkNoise()

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

generatePinkNoise

public double generatePinkNoise()

getOutput

public UnitOutputPort getOutput()

Specified by:

getOutput in interface UnitSource