com.softsynth.jsyn
Class SchmidtTrigger

java.lang.Object
  java.util.Observable
      com.softsynth.jsyn.SynthObject
          com.softsynth.jsyn.SynthSound
              com.softsynth.jsyn.SynthUnit
                  com.softsynth.jsyn.SchmidtTrigger

public class SchmidtTrigger
extends SynthUnit

SchmidtTrigger unit.

Output logic level value with hysteresis. Transition high when input exceeds setlevel. Only go low when input is below resetLevel. This can be used to reject low level noise on the input signal. The default values for setlevel and resetLevel are both 0.0. Setting setLevel to 0.1 and resetLevel to -0.1 will give some hysteresis. The outputPulse is a single sample wide pulse set when the output transitions from low to high.

   if( output == 0.0 )
          output = ( input > setLevel ) ? 1.0 : 0.0;
   else   if( output > 0.0 )
          output = ( input <= resetLevel ) ? 0.0 : 1.0;
   else
      output = previous_output;
 

Version:

JSyn Version 010

Author:

(C) 1997 Phil Burk, SoftSynth.com, All Rights Reserved

See Also:

CompareUnit

Field Summary

SynthInput	input
SynthOutput	output
SynthOutput	outputPulse
SynthInput	resetLevel
SynthInput	setLevel

Constructor Summary

SchmidtTrigger()

SchmidtTrigger(SynthContext synthContext)
Create a SynthUnit that runs at Synth.RATE_AUDIO.

SchmidtTrigger(SynthContext synthContext, int calculationRate)

Method Summary

Methods inherited from class com.softsynth.jsyn.SynthSound

addPort, addPort, findNamedPort, getName, getNumPorts, getPortAt, getPriority, setPriority, setStage, setStage, start, start, stop, stop

Methods inherited from class com.softsynth.jsyn.SynthObject

delete, deleteAll, enableDeletionByGarbageCollector, enableTracking, getPeer, getSynthContext, isTrackingEnabled, toString, track

Methods inherited from class java.util.Observable

addObserver, countObservers, deleteObserver, deleteObservers, hasChanged, notifyObservers, notifyObservers

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

input

public SynthInput input

setLevel

public SynthInput setLevel

resetLevel

public SynthInput resetLevel

outputPulse

public SynthOutput outputPulse

output

public SynthOutput output

Constructor Detail

SchmidtTrigger

public SchmidtTrigger(SynthContext synthContext,
                      int calculationRate)
               throws SynthException

Throws:

SynthException

SchmidtTrigger

public SchmidtTrigger(SynthContext synthContext)
               throws SynthException

Create a SynthUnit that runs at Synth.RATE_AUDIO.

Throws:

SynthException - If name does not match list of valid units. Note that match is case sensitive.

SchmidtTrigger

public SchmidtTrigger()
               throws SynthException

Throws:

SynthException