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diff --git a/tests/com/jsyn/examples/GoogleWaveOscillator.java b/tests/com/jsyn/examples/GoogleWaveOscillator.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.ports.UnitInputPort;
+import com.jsyn.unitgen.UnitOscillator;
+
+/**
+ * Custom unit generator to create the waveform shown on the Google home page on 2/22/12.
+ * 
+ * @author Phil Burk (C) 2010 Mobileer Inc
+ */
+public class GoogleWaveOscillator extends UnitOscillator {
+    public UnitInputPort variance;
+    private double phaseIncrement = 0.1;
+    private double previousY;
+    private double randomAmplitude = 0.0;
+
+    public GoogleWaveOscillator() {
+        addPort(variance = new UnitInputPort("Variance", 0.0));
+    }
+
+    @Override
+    public void generate(int start, int limit) {
+        // Get signal arrays from ports.
+        double[] freqs = frequency.getValues();
+        double[] outputs = output.getValues();
+        double currentPhase = phase.getValue();
+        double y;
+
+        for (int i = start; i < limit; i++) {
+            if (currentPhase > 0.0) {
+                double p = currentPhase;
+                y = Math.sqrt(4.0 * (p * (1.0 - p)));
+            } else {
+                double p = -currentPhase;
+                y = -Math.sqrt(4.0 * (p * (1.0 - p)));
+            }
+
+            if ((previousY * y) <= 0.0) {
+                // Calculate randomly offset phaseIncrement.
+                double v = variance.getValues()[0];
+                double range = ((Math.random() - 0.5) * 4.0 * v);
+                double scale = Math.pow(2.0, range);
+                phaseIncrement = convertFrequencyToPhaseIncrement(freqs[i]) * scale;
+
+                // Calculate random amplitude.
+                scale = 1.0 + ((Math.random() - 0.5) * 1.5 * v);
+                randomAmplitude = amplitude.getValues()[0] * scale;
+            }
+
+            outputs[i] = y * randomAmplitude;
+            previousY = y;
+
+            currentPhase = incrementWrapPhase(currentPhase, phaseIncrement);
+        }
+        phase.setValue(currentPhase);
+    }
+}