Instruments: add better synth, pitch control

7 files changed, 384 insertions, 127 deletions

diff --git a/tests/com/jsyn/examples/CircuitTester.java b/tests/com/jsyn/examples/CircuitTester.java
index 1a307f2..948e8a0 100644
--- a/tests/com/jsyn/examples/CircuitTester.java
+++ b/tests/com/jsyn/examples/CircuitTester.java
@@ -4,9 +4,9 @@
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
- * 
+ *
  *     http://www.apache.org/licenses/LICENSE-2.0
- * 
+ *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -22,6 +22,7 @@ import javax.swing.JApplet;
 
 import com.jsyn.JSyn;
 import com.jsyn.Synthesizer;
+import com.jsyn.instruments.DualOscillatorSynthVoice;
 import com.jsyn.instruments.SubtractiveSynthVoice;
 import com.jsyn.scope.AudioScope;
 import com.jsyn.swing.JAppletFrame;
@@ -31,7 +32,7 @@ import com.jsyn.unitgen.UnitSource;
 
 /**
  * Listen to a circuit while tweaking it knobs. Show output in a scope.
- * 
+ *
  * @author Phil Burk (C) 2012 Mobileer Inc
  */
 public class CircuitTester extends JApplet {
@@ -63,7 +64,7 @@ public class CircuitTester extends JApplet {
         // Use a scope to see the output.
         scope = new AudioScope(synth);
         scope.addProbe(unitSource.getOutput());
-        scope.setTriggerMode(AudioScope.TriggerMode.NORMAL);
+        scope.setTriggerMode(AudioScope.TriggerMode.AUTO);
         scope.getView().setControlsVisible(false);
         add(BorderLayout.SOUTH, scope.getView());
 
@@ -72,13 +73,13 @@ public class CircuitTester extends JApplet {
 
     /**
      * Override this to test your own circuits.
-     * 
+     *
      * @return
      */
     public UnitSource createUnitSource() {
         //return new SampleHoldNoteBlaster();
         //return new com.syntona.exported.FMVoice();
-        return new SubtractiveSynthVoice();
+        return new DualOscillatorSynthVoice();
         //return new WindCircuit();
         //return new WhiteNoise();
         //return new BrownNoise();
diff --git a/tests/com/jsyn/examples/HearMoogFilter.java b/tests/com/jsyn/examples/HearMoogFilter.java
index dfe3bec..4ec4811 100644
--- a/tests/com/jsyn/examples/HearMoogFilter.java
+++ b/tests/com/jsyn/examples/HearMoogFilter.java
@@ -4,9 +4,9 @@
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
- * 
+ *
  *     http://www.apache.org/licenses/LICENSE-2.0
- * 
+ *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -48,7 +48,7 @@ import com.jsyn.unitgen.UnitOscillator;
 
 /**
  * Play a sawtooth through a 4-pole filter.
- * 
+ *
  * @author Phil Burk (C) 2010 Mobileer Inc
  */
 public class HearMoogFilter extends JApplet {
@@ -58,11 +58,12 @@ public class HearMoogFilter extends JApplet {
     private FilterLowPass filterBiquad;
     private LinearRamp rampCutoff;
     private PassThrough tieQ;
+    private PassThrough tieCutoff;
     private PassThrough mixer;
     private LineOut lineOut;
 
     private AudioScope scope;
-    private AudioScopeProbe moogProbe;
+    private boolean useCutoffRamp = false;
 
     @Override
     public void init() {
@@ -70,6 +71,7 @@ public class HearMoogFilter extends JApplet {
         synth.add(oscillator = new SawtoothOscillatorBL());
         synth.add(rampCutoff = new LinearRamp());
         synth.add(tieQ = new PassThrough());
+        synth.add(tieCutoff = new PassThrough());
         synth.add(filterMoog = new FilterFourPoles());
         synth.add(filterBiquad = new FilterLowPass());
         synth.add(mixer = new PassThrough());
@@ -77,9 +79,14 @@ public class HearMoogFilter extends JApplet {
 
         oscillator.output.connect(filterMoog.input);
         oscillator.output.connect(filterBiquad.input);
-        rampCutoff.output.connect(filterMoog.frequency);
-        rampCutoff.output.connect(filterBiquad.frequency);
-        rampCutoff.time.set(0.050);
+        if (useCutoffRamp) {
+            rampCutoff.output.connect(filterMoog.frequency);
+            rampCutoff.output.connect(filterBiquad.frequency);
+            rampCutoff.time.set(0.000);
+        } else {
+            tieCutoff.output.connect(filterMoog.frequency);
+            tieCutoff.output.connect(filterBiquad.frequency);
+        }
         tieQ.output.connect(filterMoog.Q);
         tieQ.output.connect(filterBiquad.Q);
         filterMoog.output.connect(mixer.input);
@@ -89,7 +96,8 @@ public class HearMoogFilter extends JApplet {
         filterBiquad.amplitude.set(0.1);
         oscillator.frequency.setup(50.0, 130.0, 3000.0);
         oscillator.amplitude.setup(0.0, 0.336, 1.0);
-        rampCutoff.input.setup(50.0, 400.0, 4000.0);
+        rampCutoff.input.setup(filterMoog.frequency);
+        tieCutoff.input.setup(filterMoog.frequency);
         tieQ.input.setup(0.1, 0.7, 10.0);
         setupGUI();
     }
@@ -144,14 +152,18 @@ public class HearMoogFilter extends JApplet {
         knobPanel.add(setupPortKnob(oscillator.frequency, "OscFreq"));
         knobPanel.add(setupPortKnob(oscillator.amplitude, "OscAmp"));
 
-        knobPanel.add(setupPortKnob(rampCutoff.input, "Cutoff"));
+        if (useCutoffRamp) {
+            knobPanel.add(setupPortKnob(rampCutoff.input, "Cutoff"));
+        } else {
+            knobPanel.add(setupPortKnob(tieCutoff.input, "Cutoff"));
+        }
         knobPanel.add(setupPortKnob(tieQ.input, "Q"));
         rackPanel.add(knobPanel);
         add(rackPanel, BorderLayout.SOUTH);
 
         scope = new AudioScope(synth);
         scope.addProbe(oscillator.output);
-        moogProbe = scope.addProbe(filterMoog.output);
+        scope.addProbe(filterMoog.output);
         scope.addProbe(filterBiquad.output);
         scope.setTriggerMode(AudioScope.TriggerMode.NORMAL);
         scope.getView().setControlsVisible(false);
diff --git a/tests/com/jsyn/examples/PlayMIDI.java b/tests/com/jsyn/examples/PlayMIDI.java
new file mode 100644
index 0000000..04c6b9b
--- /dev/null
+++ b/tests/com/jsyn/examples/PlayMIDI.java
@@ -0,0 +1,241 @@
+/*
+ * Copyright 2010 Phil Burk, Mobileer Inc
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.jsyn.examples;
+
+import java.io.IOException;
+
+import com.jsyn.JSyn;
+import com.jsyn.Synthesizer;
+import com.jsyn.devices.javasound.MidiDeviceTools;
+import com.jsyn.instruments.DualOscillatorSynthVoice;
+import com.jsyn.instruments.SubtractiveSynthVoice;
+import com.jsyn.midi.MessageParser;
+import com.jsyn.midi.MidiConstants;
+import com.jsyn.midi.MidiSynthesizer;
+import com.jsyn.unitgen.LineOut;
+import com.jsyn.unitgen.PowerOfTwo;
+import com.jsyn.unitgen.SineOscillator;
+import com.jsyn.unitgen.UnitOscillator;
+import com.jsyn.unitgen.UnitVoice;
+import com.jsyn.util.MultiChannelSynthesizer;
+import com.jsyn.util.VoiceAllocator;
+import com.jsyn.util.VoiceDescription;
+import com.softsynth.math.AudioMath;
+import com.softsynth.shared.time.TimeStamp;
+
+/**
+ * Send MIDI messages to JSyn based MIDI synthesizer.
+ *
+ * @author Phil Burk (C) 2010 Mobileer Inc
+ */
+public class PlayMIDI {
+    private static final int NUM_CHANNELS = 16;
+    private static final int VOICES_PER_CHANNEL = 6;
+    private Synthesizer synth;
+    private MidiSynthesizer midiSynthesizer;
+    private LineOut lineOut;
+
+    private VoiceDescription voiceDescription;
+    private MultiChannelSynthesizer multiSynth;
+
+    public static void main(String[] args) {
+        PlayMIDI app = new PlayMIDI();
+        try {
+            VoiceDescription description = DualOscillatorSynthVoice.getVoiceDescription();
+            app.test(description);
+            System.out.println("Test complete");
+        } catch (IOException e) {
+            e.printStackTrace();
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        }
+        System.exit(0);
+    }
+
+    public void sendMidiMessage(byte[] bytes) {
+        midiSynthesizer.onReceive(bytes, 0, bytes.length);
+    }
+
+    public void sendNoteOff(int channel, int pitch, int velocity) {
+        midiCommand(MidiConstants.NOTE_OFF + channel, pitch, velocity);
+    }
+
+    public void sendNoteOn(int channel, int pitch, int velocity) {
+        midiCommand(MidiConstants.NOTE_ON + channel, pitch, velocity);
+    }
+
+    public void sendControlChange(int channel, int index, int value) {
+        midiCommand(MidiConstants.CONTROL_CHANGE + channel, index, value);
+    }
+
+    /**
+     * @param channel
+     * @param program starts at zero
+     */
+    private void sendProgramChange(int channel, int program) {
+        midiCommand(MidiConstants.PROGRAM_CHANGE + channel, program);
+
+    }
+
+    /**
+     * Send either RPN or NRPN.
+     */
+    public void sendParameter(int channel, int index14, int value14, int controllerXPN) {
+        int indexLsb = index14 & 0x07F;
+        int indexMsb = (index14 >> 7) & 0x07F;
+        int valueLsb = value14 & 0x07F;
+        int valueMsb = (value14 >> 7) & 0x07F;
+        sendControlChange(channel, controllerXPN + 1, indexMsb);
+        sendControlChange(channel, controllerXPN, indexLsb);
+        sendControlChange(channel, MidiConstants.CONTROLLER_DATA_ENTRY, valueMsb);
+        sendControlChange(channel, MidiConstants.CONTROLLER_DATA_ENTRY_LSB, valueLsb);
+        sendControlChange(channel, controllerXPN + 1, 0x7F); // NULL RPN index
+        sendControlChange(channel, controllerXPN, 0x7F); // to deactivate RPN
+    }
+
+    public void sendRPN(int channel, int index14, int value14) {
+        sendParameter(channel, index14, value14, MidiConstants.CONTROLLER_RPN_LSB);
+    }
+
+    public void sendNRPN(int channel, int index14, int value14) {
+        sendParameter(channel, index14, value14, MidiConstants.CONTROLLER_NRPN_LSB);
+    }
+
+    private void midiCommand(int status, int data1, int data2) {
+        byte[] buffer = new byte[3];
+        buffer[0] = (byte) status;
+        buffer[1] = (byte) data1;
+        buffer[2] = (byte) data2;
+        sendMidiMessage(buffer);
+    }
+
+    private void midiCommand(int status, int data1) {
+        byte[] buffer = new byte[2];
+        buffer[0] = (byte) status;
+        buffer[1] = (byte) data1;
+        sendMidiMessage(buffer);
+    }
+
+    public int test(VoiceDescription description) throws IOException, InterruptedException {
+        setupSynth(description);
+
+        //playOctaveUsingBend();
+        playSameNotesBent();
+
+        // Setup all the channels.
+        int maxChannels = 8;
+        for (int channel = 0; channel < maxChannels; channel++) {
+            int program = channel;
+            sendProgramChange(channel, program);
+        }
+        playNotePerChannel(maxChannels);
+
+        return 0;
+    }
+
+    private void playOctaveUsingBend() throws InterruptedException {
+        sendProgramChange(0, 0);
+        float range0 = 12.0f;
+        sendPitchBendRange(0, range0);
+        for(int i = 0; i < 13; i++) {
+            System.out.println("Bend to pitch " + i);
+            sendPitchBend(0, i / range0);
+            sendNoteOn(0, 60, 100);
+            synth.sleepFor(0.5);
+            sendNoteOff(0, 60, 100);
+            synth.sleepFor(0.5);
+        }
+    }
+
+    private void playSameNotesBent() throws InterruptedException {
+        sendProgramChange(0, 0);
+        sendProgramChange(1, 0);
+        float range0 = 2.3f;
+        float range1 = 6.8f;
+        sendPitchBendRange(0, range0);
+        sendPitchBendRange(1, range1);
+        sendPitchBend(0, 0.0f / range0); // bend by 0 semitones
+        sendPitchBend(1, 1.0f / range1); // bend by 1 semitones
+
+        System.out.println("These two notes should play at the same pitch.");
+        sendNoteOn(0, 61, 100);
+        synth.sleepFor(0.5);
+        sendNoteOff(0, 61, 100);
+
+        sendNoteOn(1, 60, 100);
+        synth.sleepFor(0.5);
+        sendNoteOff(1, 60, 100);
+
+        synth.sleepFor(2.0);
+        System.out.println("------ done ---------------");
+    }
+
+    /**
+     *
+     * @param channel
+     * @param normalizedBend between -1 and +1
+     */
+    private void sendPitchBend(int channel, float normalizedBend) {
+            final int BEND_MIN = 0x0000;
+            final int BEND_CENTER = 0x2000;
+            final int BEND_MAX = 0x3FFF;
+            int bend = BEND_CENTER + (int)(BEND_CENTER * normalizedBend);
+            if (bend < BEND_MIN) bend = BEND_MIN;
+            else if (bend > BEND_MAX) bend = BEND_MAX;
+            int lsb = bend & 0x07F;
+            int msb = (bend >> 7) & 0x07F;
+            midiCommand(MidiConstants.PITCH_BEND + channel, lsb, msb);
+    }
+
+    private void sendPitchBendRange(int channel, float range0) {
+        int semitones = (int)range0;
+        int cents = (int) (100 * (range0 - semitones));
+        int value = (semitones << 7) + cents;
+        sendRPN(channel, MidiConstants.RPN_BEND_RANGE, value);
+    }
+
+    private void playNotePerChannel(int maxChannels) throws InterruptedException {
+        // Play notes on those channels.
+        for (int channel = 0; channel < maxChannels; channel++) {
+            sendNoteOn(channel, 60 + channel, 100);
+            synth.sleepFor(0.5);
+            sendNoteOff(channel, 60 + channel, 100);
+            synth.sleepFor(0.5);
+        }
+    }
+
+    private void setupSynth(VoiceDescription description) {
+        synth = JSyn.createSynthesizer();
+
+        // Add an output.
+        synth.add(lineOut = new LineOut());
+
+        voiceDescription = description;
+        multiSynth = new MultiChannelSynthesizer();
+        final int startChannel = 0;
+        multiSynth.setup(synth, startChannel, NUM_CHANNELS, VOICES_PER_CHANNEL, voiceDescription);
+        midiSynthesizer = new MidiSynthesizer(multiSynth);
+
+        multiSynth.getOutput().connect(0,lineOut.input, 0);
+        multiSynth.getOutput().connect(1,lineOut.input, 1);
+
+        // Start synthesizer using default stereo output at 44100 Hz.
+        synth.start();
+        lineOut.start();
+    }
+
+}
diff --git a/tests/com/jsyn/examples/SeeOscillators.java b/tests/com/jsyn/examples/SeeOscillators.java
index b01e3a9..b8088c4 100644
--- a/tests/com/jsyn/examples/SeeOscillators.java
+++ b/tests/com/jsyn/examples/SeeOscillators.java
@@ -4,9 +4,9 @@
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
- * 
+ *
  *     http://www.apache.org/licenses/LICENSE-2.0
- * 
+ *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -31,12 +31,15 @@ import javax.swing.JRadioButton;
 import com.jsyn.JSyn;
 import com.jsyn.Synthesizer;
 import com.jsyn.scope.AudioScope;
+import com.jsyn.scope.AudioScopeProbe;
+import com.jsyn.swing.DoubleBoundedRangeSlider;
 import com.jsyn.swing.JAppletFrame;
 import com.jsyn.swing.PortControllerFactory;
 import com.jsyn.unitgen.ImpulseOscillator;
 import com.jsyn.unitgen.ImpulseOscillatorBL;
 import com.jsyn.unitgen.LineOut;
 import com.jsyn.unitgen.LinearRamp;
+import com.jsyn.unitgen.MorphingOscillatorBL;
 import com.jsyn.unitgen.Multiply;
 import com.jsyn.unitgen.PulseOscillator;
 import com.jsyn.unitgen.PulseOscillatorBL;
@@ -51,9 +54,9 @@ import com.jsyn.unitgen.TriangleOscillator;
 import com.jsyn.unitgen.UnitOscillator;
 
 /**
- * Display each oscillators waveform using the AudioScope. This is a reimplementation of the
+ * Display each oscillator's waveform using the AudioScope. This is a re-implementation of the
  * TJ_SeeOsc Applet from the old API.
- * 
+ *
  * @author Phil Burk (C) 2010 Mobileer Inc
  */
 public class SeeOscillators extends JApplet {
@@ -66,6 +69,10 @@ public class SeeOscillators extends JApplet {
     private Multiply oscGain;
     private ButtonGroup buttonGroup;
     private LinearRamp freqRamp;
+    private LinearRamp widthRamp;
+    private LinearRamp shapeRamp;
+    private DoubleBoundedRangeSlider widthSlider;
+    private DoubleBoundedRangeSlider shapeSlider;
 
     /* Can be run as either an application or as an applet. */
     public static void main(String args[]) {
@@ -83,11 +90,13 @@ public class SeeOscillators extends JApplet {
         add(BorderLayout.NORTH, new JLabel("Show Oscillators in an AudioScope"));
 
         scope = new AudioScope(synth);
-        scope.addProbe(oscGain.output);
+        AudioScopeProbe probe = scope.addProbe(oscGain.output);
+        probe.setAutoScaleEnabled(false);
+        probe.setVerticalScale(1.1);
         scope.setTriggerMode(AudioScope.TriggerMode.NORMAL);
         // scope.getModel().getTriggerModel().getLevelModel().setDoubleValue( 0.0001 );
         // Turn off the gain and trigger control GUI.
-        scope.getView().setShowControls(false);
+        scope.getView().setControlsVisible(false);
         scope.start();
         add(BorderLayout.CENTER, scope.getView());
 
@@ -101,6 +110,10 @@ public class SeeOscillators extends JApplet {
 
         southPanel.add(PortControllerFactory.createExponentialPortSlider(freqRamp.input));
         southPanel.add(PortControllerFactory.createExponentialPortSlider(oscGain.inputB));
+        southPanel.add(widthSlider = PortControllerFactory.createPortSlider(widthRamp.input));
+        widthSlider.setEnabled(false);
+        southPanel.add(shapeSlider = PortControllerFactory.createPortSlider(shapeRamp.input));
+        shapeSlider.setEnabled(false);
 
         oscPanel.validate();
         validate();
@@ -121,10 +134,21 @@ public class SeeOscillators extends JApplet {
         freqRamp.input.setName("Frequency");
         freqRamp.time.set(0.1);
 
+        synth.add(widthRamp = new LinearRamp());
+        widthRamp.input.setup(-1.0, 0.0, 1.0);
+        widthRamp.input.setName("Width");
+        widthRamp.time.set(0.1);
+
+        synth.add(shapeRamp = new LinearRamp());
+        shapeRamp.input.setup(-1.0, 0.0, 1.0);
+        shapeRamp.input.setName("Shape");
+        shapeRamp.time.set(0.1);
+
         // Add an output so we can hear the oscillators.
         synth.add(lineOut = new LineOut());
 
-        oscGain.output.connect(lineOut.input);
+        oscGain.output.connect(0, lineOut.input, 0);
+        oscGain.output.connect(0, lineOut.input, 1);
 
         setupGUI();
 
@@ -141,6 +165,7 @@ public class SeeOscillators extends JApplet {
         addOscillator(new SquareOscillatorBL(), "SquareBL");
         addOscillator(new PulseOscillator(), "Pulse");
         addOscillator(new PulseOscillatorBL(), "PulseBL");
+        addOscillator(new MorphingOscillatorBL(), "MorphBL");
         addOscillator(new ImpulseOscillator(), "Impulse");
         addOscillator(new ImpulseOscillatorBL(), "ImpulseBL");
 
@@ -159,6 +184,15 @@ public class SeeOscillators extends JApplet {
         oscillators.add(osc);
         synth.add(osc);
         freqRamp.output.connect(osc.frequency);
+        if (osc instanceof PulseOscillatorBL) {
+            widthRamp.output.connect(((PulseOscillatorBL)osc).width);
+        }
+        if (osc instanceof PulseOscillator) {
+            widthRamp.output.connect(((PulseOscillator)osc).width);
+        }
+        if (osc instanceof MorphingOscillatorBL) {
+            shapeRamp.output.connect(((MorphingOscillatorBL)osc).shape);
+        }
         osc.amplitude.set(1.0);
         JRadioButton checkBox = new JRadioButton(label);
         buttonGroup.add(checkBox);
@@ -169,6 +203,9 @@ public class SeeOscillators extends JApplet {
                 oscGain.inputA.disconnectAll(0);
                 // Connect this one.
                 osc.output.connect(oscGain.inputA);
+                widthSlider.setEnabled(osc instanceof PulseOscillator
+                        || osc instanceof PulseOscillatorBL);
+                shapeSlider.setEnabled(osc instanceof MorphingOscillatorBL);
             }
         });
         oscPanel.add(checkBox);
diff --git a/tests/com/jsyn/examples/UseMidiKeyboard.java b/tests/com/jsyn/examples/UseMidiKeyboard.java
index 196f13c..0efa039 100644
--- a/tests/com/jsyn/examples/UseMidiKeyboard.java
+++ b/tests/com/jsyn/examples/UseMidiKeyboard.java
@@ -4,9 +4,9 @@
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
- * 
+ *
  *     http://www.apache.org/licenses/LICENSE-2.0
- * 
+ *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -26,33 +26,26 @@ import javax.sound.midi.Receiver;
 import com.jsyn.JSyn;
 import com.jsyn.Synthesizer;
 import com.jsyn.devices.javasound.MidiDeviceTools;
-import com.jsyn.instruments.SubtractiveSynthVoice;
-import com.jsyn.midi.MessageParser;
-import com.jsyn.midi.MidiConstants;
+import com.jsyn.instruments.DualOscillatorSynthVoice;
+import com.jsyn.midi.MidiSynthesizer;
 import com.jsyn.unitgen.LineOut;
-import com.jsyn.unitgen.PowerOfTwo;
-import com.jsyn.unitgen.SineOscillator;
-import com.jsyn.unitgen.UnitOscillator;
-import com.jsyn.util.VoiceAllocator;
-import com.softsynth.shared.time.TimeStamp;
+import com.jsyn.util.MultiChannelSynthesizer;
+import com.jsyn.util.VoiceDescription;
 
 /**
  * Connect a USB MIDI Keyboard to the internal MIDI Synthesizer using JavaSound.
- * 
+ *
  * @author Phil Burk (C) 2010 Mobileer Inc
  */
 public class UseMidiKeyboard {
-    private static final int MAX_VOICES = 8;
+    private static final int NUM_CHANNELS = 16;
+    private static final int VOICES_PER_CHANNEL = 3;
+
     private Synthesizer synth;
-    private VoiceAllocator allocator;
     private LineOut lineOut;
-    private double vibratoRate = 5.0;
-    private double vibratoDepth = 0.0;
-
-    private UnitOscillator lfo;
-    private PowerOfTwo powerOfTwo;
-    private MessageParser messageParser;
-    private SubtractiveSynthVoice[] voices;
+    private MidiSynthesizer midiSynthesizer;
+    private VoiceDescription voiceDescription;
+    private MultiChannelSynthesizer multiSynth;
 
     public static void main(String[] args) {
         UseMidiKeyboard app = new UseMidiKeyboard();
@@ -77,15 +70,13 @@ public class UseMidiKeyboard {
         @Override
         public void send(MidiMessage message, long timeStamp) {
             byte[] bytes = message.getMessage();
-            messageParser.parse(bytes);
+            midiSynthesizer.onReceive(bytes, 0, bytes.length);
         }
     }
 
     public int test() throws MidiUnavailableException, IOException, InterruptedException {
         setupSynth();
 
-        messageParser = new MyParser();
-
         int result = 2;
         MidiDevice keyboard = MidiDeviceTools.findKeyboard();
         Receiver receiver = new CustomReceiver();
@@ -104,95 +95,27 @@ public class UseMidiKeyboard {
         return result;
     }
 
-    class MyParser extends MessageParser {
-        @Override
-        public void controlChange(int channel, int index, int value) {
-            // Mod Wheel
-            if (index == 1) {
-                vibratoDepth = 0.1 * value / 128.0;
-                // System.out.println( "vibratoDepth = " + vibratoDepth );
-                lfo.amplitude.set(vibratoDepth);
-            }
-            // 102 is the index of the first knob on my Axiom 25
-            else if (index == 102) {
-                final double bump = 0.95;
-                if (value < 64) {
-                    vibratoRate *= bump;
-                } else {
-                    vibratoRate *= 1.0 / bump;
-                }
-                System.out.println("vibratoRate = " + vibratoRate);
-                lfo.frequency.set(vibratoRate);
-            }
-
-        }
-
-        @Override
-        public void noteOff(int channel, int noteNumber, int velocity) {
-            allocator.noteOff(noteNumber, synth.createTimeStamp());
-        }
-
-        @Override
-        public void noteOn(int channel, int noteNumber, int velocity) {
-            double frequency = convertPitchToFrequency(noteNumber);
-            double amplitude = velocity / (4 * 128.0);
-            TimeStamp timeStamp = synth.createTimeStamp();
-            allocator.noteOn(noteNumber, frequency, amplitude, timeStamp);
-        }
-
-        @Override
-        public void pitchBend(int channel, int bend) {
-            double fraction = (bend - MidiConstants.PITCH_BEND_CENTER)
-                    / ((double) MidiConstants.PITCH_BEND_CENTER);
-            System.out.println("bend = " + bend + ", fraction = " + fraction);
-        }
-    }
-
-    /**
-     * Calculate frequency in Hertz based on MIDI pitch. Middle C is 60.0. You can use fractional
-     * pitches so 60.5 would give you a pitch half way between C and C#.
-     */
-    double convertPitchToFrequency(double pitch) {
-        final double concertA = 440.0;
-        return concertA * Math.pow(2.0, ((pitch - 69) * (1.0 / 12.0)));
-    }
 
     private void setupSynth() {
         synth = JSyn.createSynthesizer();
 
-        // Add an output.
-        synth.add(lineOut = new LineOut());
+        voiceDescription = DualOscillatorSynthVoice.getVoiceDescription();
+//        voiceDescription = SubtractiveSynthVoice.getVoiceDescription();
 
-        synth.add(powerOfTwo = new PowerOfTwo());
-        synth.add(lfo = new SineOscillator());
-        // Sums pitch modulation.
-        lfo.output.connect(powerOfTwo.input);
-        lfo.amplitude.set(vibratoDepth);
-        lfo.frequency.set(vibratoRate);
-
-        voices = new SubtractiveSynthVoice[MAX_VOICES];
-        for (int i = 0; i < MAX_VOICES; i++) {
-            SubtractiveSynthVoice voice = new SubtractiveSynthVoice();
-            synth.add(voice);
-            powerOfTwo.output.connect(voice.pitchModulation);
-            voice.getOutput().connect(0, lineOut.input, 0);
-            voice.getOutput().connect(0, lineOut.input, 1);
-            voices[i] = voice;
-        }
-        allocator = new VoiceAllocator(voices);
+        multiSynth = new MultiChannelSynthesizer();
+        final int startChannel = 0;
+        multiSynth.setup(synth, startChannel, NUM_CHANNELS, VOICES_PER_CHANNEL, voiceDescription);
+        midiSynthesizer = new MidiSynthesizer(multiSynth);
+
+        // Create a LineOut for the entire synthesizer.
+        synth.add(lineOut = new LineOut());
+        multiSynth.getOutput().connect(0,lineOut.input, 0);
+        multiSynth.getOutput().connect(1,lineOut.input, 1);
 
         // Start synthesizer using default stereo output at 44100 Hz.
         synth.start();
-        // We only need to start the LineOut. It will pull data from the
-        // oscillator.
         lineOut.start();
 
-        // Get synthesizer time in seconds.
-        double timeNow = synth.getCurrentTime();
-
-        // Advance to a near future time so we have a clean start.
-        double time = timeNow + 0.5;
-
     }
 
 }
diff --git a/tests/com/jsyn/research/lambdas/LambdaUnits.java b/tests/com/jsyn/research/lambdas/LambdaUnits.java
new file mode 100644
index 0000000..42807ac
--- /dev/null
+++ b/tests/com/jsyn/research/lambdas/LambdaUnits.java
@@ -0,0 +1,22 @@
+package com.jsyn.research.lambdas;
+
+import java.util.function.BinaryOperator;
+
+public class LambdaUnits {
+
+
+    public static void main(String[] args) {
+        test();
+    }
+
+    void tryLambda(BinaryOperator<Double> op) {
+        double result = op.apply(3.0,  4.0);
+        System.out.println("result = " + result);
+    }
+
+    private static void test() {
+        System.out.println("Test Lambdas");
+  // Need Java 8!      tryLambda((x, y) -> (x * y));
+    }
+
+}
diff --git a/tests/com/jsyn/unitgen/TestMath.java b/tests/com/jsyn/unitgen/TestMath.java
index 0fde9b5..cae1dea 100644
--- a/tests/com/jsyn/unitgen/TestMath.java
+++ b/tests/com/jsyn/unitgen/TestMath.java
@@ -4,9 +4,9 @@
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
- * 
+ *
  *     http://www.apache.org/licenses/LICENSE-2.0
- * 
+ *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -19,6 +19,7 @@ package com.jsyn.unitgen;
 import junit.framework.TestCase;
 
 import com.jsyn.engine.SynthesisEngine;
+import com.softsynth.math.AudioMath;
 
 /**
  * @author Phil Burk, (C) 2009 Mobileer Inc
@@ -388,5 +389,25 @@ public class TestMath extends TestCase {
             assertEquals("PowerOfTwo", Math.pow(2.0, in), powerOfTwo.output.getValue(), 0.001);
         }
     }
+    public void testPitchToFrequency() {
+        PitchToFrequency ugen = new PitchToFrequency();
+        ugen.setSynthesisEngine(synthesisEngine);
+        final double smallValue = -1.5308084989341915E-17;
+        double values[] = {
+                49.0, 49.5, 50.0 + smallValue,
+                60.0 -smallValue,
+                79.2, 12.9, 118.973
+        };
+        // Sanity check AudioMath
+        assertEquals("PitchToFrequency", 440.0,  AudioMath.pitchToFrequency(69), 0.001);
+        assertEquals("PitchToFrequency", 660.0,  AudioMath.pitchToFrequency(69+7.02), 0.1);
+
+        for (double pitch : values) {
+            ugen.input.setValueInternal(pitch);
+            ugen.generate();
+            assertEquals("PitchToFrequency", AudioMath.pitchToFrequency(pitch),
+                    ugen.output.getValue(), 0.001);
+        }
+    }
 
 }