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diff --git a/tests/com/jsyn/examples/PlayPartials.java b/tests/com/jsyn/examples/PlayPartials.java
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+/*
+ * 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 com.jsyn.JSyn;
+import com.jsyn.Synthesizer;
+import com.jsyn.unitgen.LineOut;
+import com.jsyn.unitgen.LinearRamp;
+import com.jsyn.unitgen.Multiply;
+import com.jsyn.unitgen.SineOscillator;
+import com.jsyn.unitgen.UnitOscillator;
+
+/**
+ * Play a enharmonic sine tones using JSyn oscillators.
+ * 
+ * @author Phil Burk (C) 2010 Mobileer Inc
+ */
+public class PlayPartials {
+    private Synthesizer synth;
+    private UnitOscillator[] osc;
+    private Multiply[] multipliers;
+    private LinearRamp ramp;
+    private LineOut lineOut;
+    private double[] amps = {
+            0.2, 0.1, 0.3, 0.4
+    };
+    private double[] ratios = {
+            1.0, Math.sqrt(2.0), Math.E, Math.PI
+    };
+
+    private void test() {
+        // Create a context for the synthesizer.
+        synth = JSyn.createSynthesizer();
+
+        // Start synthesizer using default stereo output at 44100 Hz.
+        synth.start();
+
+        // Add a stereo audio output unit.
+        synth.add(lineOut = new LineOut());
+        synth.add(ramp = new LinearRamp());
+
+        // Add a tone generator.
+        osc = new SineOscillator[amps.length];
+        multipliers = new Multiply[ratios.length];
+
+        for (int i = 0; i < osc.length; i++) {
+            // Create unit generators and store them in arrays.
+            synth.add(osc[i] = new SineOscillator());
+            synth.add(multipliers[i] = new Multiply());
+
+            // Connect each oscillator to both channels of the output.
+            // They will be mixed automatically.
+            osc[i].output.connect(0, lineOut.input, 0);
+            osc[i].output.connect(0, lineOut.input, 1);
+
+            // Use a multiplier to scale the output of the ramp.
+            // output = inputA * inputB
+            ramp.output.connect(multipliers[i].inputA);
+            multipliers[i].output.connect(osc[i].frequency);
+            multipliers[i].inputB.set(ratios[i]);
+
+            osc[i].amplitude.set(amps[i]);
+        }
+
+        // start ramping up
+        ramp.current.set(100.0);
+        ramp.time.set(3.0);
+        ramp.input.set(700.0);
+
+        // We only need to start the LineOut. It will pull data from the
+        // oscillator.
+        lineOut.start();
+
+        System.out.println("You should now be hearing a sine wave. ---------");
+
+        // Sleep while the sound is generated in the background.
+        try {
+            // Sleep for a few seconds.
+            synth.sleepFor(4.0);
+            // ramp down
+            ramp.input.set(100.0);
+            synth.sleepFor(4.0);
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        }
+
+        System.out.println("Stop playing. -------------------");
+        // Stop everything.
+        synth.stop();
+    }
+
+    public static void main(String[] args) {
+        System.out.println("Java version = " + System.getProperty("java.version"));
+        new PlayPartials().test();
+    }
+}