com.softsynth.jsyn
Class StateVariableFilter

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

Deprecated. Use Filter_StateVariable instead.

public class StateVariableFilter
extends SynthFilter

State Variable Filter This filter is based on the State Variable Filter described in Hal Chamberlain's "Musical Applications of MicroProcessors". It is convenient because its frequency and resonance can each be controlled by a single value.

Note that this entire class is depracated because the "frequency" port required the use of SIGNAL_TYPE_SVF_FREQ when making connections.

The "output" port of this filter is the "lowPass" output multiplied by the "amplitude".

Version:

JSyn Version 005

Author:

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

See Also:

Synth, SynthUnit, Filter_101z

Field Summary

SynthInput	amplitude Deprecated. Amplitude of Output in the range of 0.0 to 1.0.
SynthOutput	bandPass Deprecated. Band pass filtered signal.
SynthInput	frequency Deprecated. Frequency of filter cutoff in Hertz.
SynthOutput	highPass Deprecated. High pass filtered signal.
SynthOutput	lowPass Deprecated. Low pass filtered signal.
SynthInput	resonance Deprecated. Controls feedback that causes self oscillation.

Fields inherited from class com.softsynth.jsyn.SynthFilter

input, output

Constructor Summary

StateVariableFilter()
Deprecated.

StateVariableFilter(SynthContext synthContext)
Deprecated. Create a StateVariableFilter that runs at Synth.RATE_AUDIO.

StateVariableFilter(SynthContext synthContext, int calculationRate)
Deprecated.

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

frequency

public SynthInput frequency

Deprecated.

Frequency of filter cutoff in Hertz. SIGNAL_TYPE_SVF_FREQ

resonance

public SynthInput resonance

Deprecated.

Controls feedback that causes self oscillation. Actually 1/Q - SIGNAL_TYPE_RAW_SIGNED in the range of 0.0 to 1.0. Defaults to 0.125.

amplitude

public SynthInput amplitude

Deprecated.

Amplitude of Output in the range of 0.0 to 1.0. SIGNAL_TYPE_RAW_SIGNED Defaults to 1.0

Note that the amplitude only affects the "output" port and not the lowPass, bandPass or highPass signals. Use a MultiplyUnit if you need to scale those signals.

lowPass

public SynthOutput lowPass

Deprecated.

Low pass filtered signal. SIGNAL_TYPE_RAW_SIGNED

Note that this signal is not affected by the amplitude port.

bandPass

public SynthOutput bandPass

Deprecated.

Band pass filtered signal. SIGNAL_TYPE_RAW_SIGNED

Note that this signal is not affected by the amplitude port.

highPass

public SynthOutput highPass

Deprecated.

High pass filtered signal. SIGNAL_TYPE_RAW_SIGNED

Note that this signal is not affected by the amplitude port.

Constructor Detail

StateVariableFilter

public StateVariableFilter(SynthContext synthContext,
                           int calculationRate)
                    throws SynthException

Deprecated.

Throws:

SynthException

StateVariableFilter

public StateVariableFilter(SynthContext synthContext)
                    throws SynthException

Deprecated.

Create a StateVariableFilter that runs at Synth.RATE_AUDIO.

Throws:

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

StateVariableFilter

public StateVariableFilter()
                    throws SynthException

Deprecated.

Throws:

SynthException