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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 java.awt.BorderLayout;
import java.awt.GridLayout;
import javax.swing.BorderFactory;
import javax.swing.JApplet;
import javax.swing.JLabel;
import javax.swing.JPanel;
import com.jsyn.JSyn;
import com.jsyn.Synthesizer;
import com.jsyn.ports.UnitInputPort;
import com.jsyn.scope.AudioScope;
import com.jsyn.swing.DoubleBoundedRangeModel;
import com.jsyn.swing.JAppletFrame;
import com.jsyn.swing.PortModelFactory;
import com.jsyn.swing.RotaryTextController;
import com.jsyn.unitgen.LineOut;
import com.jsyn.unitgen.SineOscillator;
import com.jsyn.unitgen.SineOscillatorPhaseModulated;
/**
* Play a tone using a phase modulated sinewave oscillator. Phase modulation (PM) is very similar to
* frequency modulation (FM) but is easier to control.
*
* @author Phil Burk (C) 2010 Mobileer Inc
*/
public class HearSinePM extends JApplet {
private static final long serialVersionUID = -2704222221111608377L;
private Synthesizer synth;
SineOscillatorPhaseModulated carrier;
SineOscillator modulator;
LineOut lineOut;
AudioScope scope;
@Override
public void init() {
synth = JSyn.createSynthesizer();
// Add a tone generator.
synth.add(modulator = new SineOscillator());
// Add a trigger.
synth.add(carrier = new SineOscillatorPhaseModulated());
// Add an output mixer.
synth.add(lineOut = new LineOut());
modulator.output.connect(carrier.modulation);
carrier.output.connect(0, lineOut.input, 0);
carrier.output.connect(0, lineOut.input, 1);
modulator.amplitude.setup(0.0, 1.0, 10.0);
carrier.amplitude.setup(0.0, 0.25, 1.0);
setupGUI();
}
private void setupGUI() {
setLayout(new BorderLayout());
add(new JLabel("Show Phase Modulation in an AudioScope"), BorderLayout.NORTH);
// Arrange the knob in a row.
JPanel knobPanel = new JPanel();
knobPanel.setLayout(new GridLayout(1, 0));
knobPanel.add(setupPortKnob(modulator.frequency, "MFreq"));
knobPanel.add(setupPortKnob(modulator.amplitude, "MAmp"));
knobPanel.add(setupPortKnob(carrier.frequency, "CFreq"));
knobPanel.add(setupPortKnob(carrier.amplitude, "CAmp"));
add(knobPanel, BorderLayout.SOUTH);
scope = new AudioScope(synth);
scope.addProbe(carrier.output);
scope.addProbe(modulator.output);
scope.setTriggerMode(AudioScope.TriggerMode.NORMAL);
scope.getView().setControlsVisible(true);
add(scope.getView(), BorderLayout.CENTER);
scope.start();
validate();
}
private RotaryTextController setupPortKnob(UnitInputPort port, String label) {
DoubleBoundedRangeModel model = PortModelFactory.createExponentialModel(port);
RotaryTextController knob = new RotaryTextController(model, 10);
knob.setBorder(BorderFactory.createTitledBorder(label));
knob.setTitle(label);
return knob;
}
@Override
public void start() {
// Start synthesizer using default stereo output at 44100 Hz.
synth.start();
scope.start();
// We only need to start the LineOut. It will pull data from the
// oscillator.
lineOut.start();
}
@Override
public void stop() {
scope.stop();
synth.stop();
}
/* Can be run as either an application or as an applet. */
public static void main(String args[]) {
HearSinePM applet = new HearSinePM();
JAppletFrame frame = new JAppletFrame("Hear Phase Modulation", applet);
frame.setSize(640, 400);
frame.setVisible(true);
frame.test();
}
}
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