com.jsyn.unitgen

Class PeakFollower

java.lang.Object

com.jsyn.unitgen.UnitGenerator

com.jsyn.unitgen.PeakFollower

public class PeakFollower
extends UnitGenerator

Tracks the peaks of an input signal. This can be used to monitor the overall amplitude of a signal. The output can be used to drive color organs, vocoders, VUmeters, etc. Output drops exponentially when the input drops below the current output level. The output approaches zero based on the value on the halfLife port.

Author:

(C) 1997-2009 Phil Burk, SoftSynth.com

Field Summary

Fields

Modifier and Type	Field and Description
UnitVariablePort	current
UnitInputPort	halfLife
UnitInputPort	input
UnitOutputPort	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
PeakFollower()

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.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

Field Detail

input

public UnitInputPort input

current

public UnitVariablePort current

halfLife

public UnitInputPort halfLife

output

public UnitOutputPort output

Constructor Detail

PeakFollower

public PeakFollower()

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