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/*
* Copyright 2009 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.unitgen.LineOut;
import com.jsyn.unitgen.SawtoothOscillator;
import com.softsynth.shared.time.TimeStamp;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Play notes using timestamped noteOn and noteOff methods of the UnitVoice.
*
* @author Phil Burk (C) 2009 Mobileer Inc
*/
public class PlayNotes {
private static final Logger LOGGER = LoggerFactory.getLogger(PlayNotes.class);
private void test() {
// Create a context for the synthesizer.
var synth = JSyn.createSynthesizer();
// Set output latency to 123 msec because this is not an interactive app.
synth.getAudioDeviceManager().setSuggestedOutputLatency(0.123);
// Add a tone generator.
var voice = new SawtoothOscillator();
synth.add(voice);
// synth.add( ugen = new SineOscillator() );
// synth.add( ugen = new SubtractiveSynthVoice() );
// Add an output mixer.
var lineOut = new LineOut();
synth.add(lineOut);
// Connect the oscillator to the left and right audio output.
voice.getOutput().connect(0, lineOut.input, 0);
voice.getOutput().connect(0, lineOut.input, 1);
// Start synthesizer using default stereo output at 44100 Hz.
synth.start();
// Get synthesizer time in seconds.
double timeNow = synth.getCurrentTime();
// Advance to a near future time so we have a clean start.
TimeStamp timeStamp = new TimeStamp(timeNow + 0.5);
// We only need to start the LineOut. It will pull data from the
// oscillator.
synth.startUnit(lineOut, timeStamp);
// Schedule a note on and off.
double freq = 200.0; // hertz
double duration = 1.4;
double onTime = 1.0;
voice.noteOn(freq, 0.5, timeStamp);
voice.noteOff(timeStamp.makeRelative(onTime));
// Schedule this to happen a bit later.
timeStamp = timeStamp.makeRelative(duration);
freq *= 1.5; // up a perfect fifth
voice.noteOn(freq, 0.5, timeStamp);
voice.noteOff(timeStamp.makeRelative(onTime));
timeStamp = timeStamp.makeRelative(duration);
freq *= 4.0 / 5.0; // down a major third
voice.noteOn(freq, 0.5, timeStamp);
voice.noteOff(timeStamp.makeRelative(onTime));
// Sleep while the song is being generated in the background thread.
try {
LOGGER.debug("Sleep while synthesizing.");
synth.sleepUntil(timeStamp.getTime() + 2.0);
LOGGER.debug("Woke up...");
} catch (InterruptedException e) {
e.printStackTrace();
}
// Stop everything.
synth.stop();
}
public static void main(String[] args) {
new PlayNotes().test();
}
}
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