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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.data.Function;
import com.jsyn.unitgen.FunctionOscillator;
import com.jsyn.unitgen.LineOut;
/**
* Play a tone using a FunctionOscillator.
*
* @author Phil Burk (C) 2010 Mobileer Inc
*/
public class PlayFunction {
Synthesizer synth;
FunctionOscillator osc;
LineOut lineOut;
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 FunctionOscillator
synth.add(osc = new FunctionOscillator());
// Define a function that gives the shape of the waveform.
Function func = new Function() {
@Override
public double evaluate(double input) {
// Input ranges from -1.0 to 1.0
double s = Math.sin(input * Math.PI * 2.0);
double cubed = s * s * s;
return cubed;
}
};
osc.function.set(func);
// Add a stereo audio output unit.
synth.add(lineOut = new LineOut());
// Connect the oscillator to both channels of the output.
osc.output.connect(0, lineOut.input, 0);
osc.output.connect(0, lineOut.input, 1);
// Set the frequency and amplitude for the sine wave.
osc.frequency.set(345.0);
osc.amplitude.set(0.6);
// 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 {
double time = synth.getCurrentTime();
// Sleep for a few seconds.
synth.sleepUntil(time + 4.0);
} catch (InterruptedException e) {
e.printStackTrace();
}
System.out.println("Stop playing. -------------------");
// Stop everything.
synth.stop();
}
public static void main(String[] args) {
new PlayFunction().test();
}
}
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