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Diffstat (limited to 'tests/com/jsyn/examples/PlayChords.java')
| -rw-r--r-- | tests/com/jsyn/examples/PlayChords.java | 180 |
1 files changed, 0 insertions, 180 deletions
diff --git a/tests/com/jsyn/examples/PlayChords.java b/tests/com/jsyn/examples/PlayChords.java deleted file mode 100644 index 28cab5f..0000000 --- a/tests/com/jsyn/examples/PlayChords.java +++ /dev/null @@ -1,180 +0,0 @@ -/* - * 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.Synthesizer; -import com.jsyn.instruments.SubtractiveSynthVoice; -import com.jsyn.unitgen.LineOut; -import com.jsyn.unitgen.UnitVoice; -import com.jsyn.util.VoiceAllocator; -import com.softsynth.math.AudioMath; -import com.softsynth.shared.time.TimeStamp; - -/** - * Play chords and melody using the VoiceAllocator. - * - * @author Phil Burk (C) 2009 Mobileer Inc - */ -public class PlayChords { - private static final int MAX_VOICES = 8; - private Synthesizer synth; - private VoiceAllocator allocator; - private LineOut lineOut; - /** Number of seconds to generate music in advance of presentation-time. */ - private double advance = 0.2; - private double secondsPerBeat = 0.6; - // on time over note duration - private double dutyCycle = 0.8; - private double measure = secondsPerBeat * 4.0; - private UnitVoice[] voices; - - private void test() { - synth = JSyn.createSynthesizer(); - - // Add an output. - synth.add(lineOut = new LineOut()); - - voices = new UnitVoice[MAX_VOICES]; - for (int i = 0; i < MAX_VOICES; i++) { - SubtractiveSynthVoice voice = new SubtractiveSynthVoice(); - synth.add(voice); - voice.getOutput().connect(0, lineOut.input, 0); - voice.getOutput().connect(0, lineOut.input, 1); - voices[i] = voice; - } - allocator = new VoiceAllocator(voices); - - // Start synthesizer using default stereo output at 44100 Hz. - synth.start(); - // We only need to start the LineOut. It will pull data from the - // voices. - lineOut.start(); - - // Get synthesizer time in seconds. - double timeNow = synth.getCurrentTime(); - - // Advance to a near future time so we have a clean start. - double time = timeNow + 1.0; - - try { - int tonic = 60 - 12; - for (int i = 0; i < 4; i++) { - playMajorMeasure1(time, tonic); - time += measure; - catchUp(time); - playMajorMeasure1(time, tonic + 4); - time += measure; - catchUp(time); - playMajorMeasure1(time, tonic + 7); - time += measure; - catchUp(time); - playMinorMeasure1(time, tonic + 2); // minor chord - time += measure; - catchUp(time); - } - time += secondsPerBeat; - catchUp(time); - - } catch (InterruptedException e) { - e.printStackTrace(); - } - - // Stop everything. - synth.stop(); - } - - private void playMinorMeasure1(double time, int base) throws InterruptedException { - int p1 = base; - int p2 = base + 3; - int p3 = base + 7; - playChord1(time, p1, p2, p3); - playNoodle1(time, p1 + 24, p2 + 24, p3 + 24); - } - - private void playMajorMeasure1(double time, int base) throws InterruptedException { - int p1 = base; - int p2 = base + 4; - int p3 = base + 7; - playChord1(time, p1, p2, p3); - playNoodle1(time, p1 + 24, p2 + 24, p3 + 24); - } - - private void playNoodle1(double time, int p1, int p2, int p3) { - double secondsPerNote = secondsPerBeat * 0.5; - for (int i = 0; i < 8; i++) { - int p = pickFromThree(p1, p2, p3); - noteOn(time, p); - noteOff(time + dutyCycle * secondsPerNote, p); - time += secondsPerNote; - } - } - - private int pickFromThree(int p1, int p2, int p3) { - int r = (int) (Math.random() * 3.0); - if (r < 1) - return p1; - else if (r < 2) - return p2; - else - return p3; - } - - private void playChord1(double time, int p1, int p2, int p3) throws InterruptedException { - double dur = dutyCycle * secondsPerBeat; - playTriad(time, dur, p1, p2, p3); - time += secondsPerBeat; - playTriad(time, dur, p1, p2, p3); - time += secondsPerBeat; - playTriad(time, dur * 0.25, p1, p2, p3); - time += secondsPerBeat * 0.25; - playTriad(time, dur * 0.25, p1, p2, p3); - time += secondsPerBeat * 0.75; - playTriad(time, dur, p1, p2, p3); - time += secondsPerBeat; - } - - private void playTriad(double time, double dur, int p1, int p2, int p3) - throws InterruptedException { - noteOn(time, p1); - noteOn(time, p2); - noteOn(time, p3); - double offTime = time + dur; - noteOff(offTime, p1); - noteOff(offTime, p2); - noteOff(offTime, p3); - } - - private void catchUp(double time) throws InterruptedException { - synth.sleepUntil(time - advance); - } - - private void noteOff(double time, int noteNumber) { - allocator.noteOff(noteNumber, new TimeStamp(time)); - } - - private void noteOn(double time, int noteNumber) { - double frequency = AudioMath.pitchToFrequency(noteNumber); - double amplitude = 0.2; - TimeStamp timeStamp = new TimeStamp(time); - allocator.noteOn(noteNumber, frequency, amplitude, timeStamp); - } - - public static void main(String[] args) { - new PlayChords().test(); - } -} |