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/*
* Copyright 2013 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.benchmarks;
import com.jsyn.JSyn;
import com.jsyn.Synthesizer;
import com.jsyn.unitgen.PassThrough;
import com.jsyn.unitgen.PitchDetector;
import com.jsyn.unitgen.SawtoothOscillator;
import com.jsyn.unitgen.SawtoothOscillatorBL;
import com.jsyn.unitgen.SawtoothOscillatorDPW;
import com.jsyn.unitgen.SineOscillator;
import com.jsyn.unitgen.SquareOscillator;
import com.jsyn.unitgen.SquareOscillatorBL;
import com.jsyn.unitgen.UnitOscillator;
import com.softsynth.math.FourierMath;
/**
* @author Phil Burk (C) 2013 Mobileer Inc
*/
public class BenchJSyn {
private Synthesizer synth;
private long startTime;
private long endTime;
private PassThrough pass;
public void run() {
try {
// Run multiple times to see if HotSpot compiler or cache makes a difference.
for (int i = 0; i < 4; i++) {
benchmark();
}
} catch (InstantiationException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
private void benchmark() throws InstantiationException, IllegalAccessException,
InterruptedException {
double realTime = 10.0;
int count = 40;
// benchFFTDouble();
// benchFFTFloat();
/*
* realTime = 20.0; benchmarkOscillator(SawtoothOscillator.class, count, realTime);
* benchmarkOscillator(SawtoothOscillatorDPW.class, count, realTime);
* benchmarkOscillator(SawtoothOscillatorBL.class, count, realTime);
*/
benchmarkOscillator(SquareOscillator.class, count, realTime);
benchmarkOscillator(SquareOscillatorBL.class, count, realTime);
benchmarkOscillator(SineOscillator.class, count, realTime);
benchmarkPitchDetector(count, realTime);
}
public void benchFFTDouble() {
int size = 2048;
int bin = 5;
int count = 20000;
double[] ar = new double[size];
double[] ai = new double[size];
double[] magnitudes = new double[size];
double amplitude = 1.0;
addSineWave(size, bin, ar, amplitude);
System.out.println("Bench double FFT");
startTiming();
for (int i = 0; i < count; i++) {
FourierMath.transform(1, size, ar, ai);
}
endTiming(FourierMath.class, count, size / (2.0 * 44100));
FourierMath.calculateMagnitudes(ar, ai, magnitudes);
assert (magnitudes[bin - 1] < 0.001);
assert (magnitudes[bin] > 0.5);
assert (magnitudes[bin + 1] < 0.001);
}
public void benchFFTFloat() {
int size = 2048;
int bin = 5;
int count = 20000;
float[] ar = new float[size];
float[] ai = new float[size];
float[] magnitudes = new float[size];
float amplitude = 1.0f;
addSineWave(size, bin, ar, amplitude);
System.out.println("Bench float FFT");
startTiming();
for (int i = 0; i < count; i++) {
FourierMath.transform(1, size, ar, ai);
}
endTiming(FourierMath.class, count, size / (2.0 * 44100));
FourierMath.calculateMagnitudes(ar, ai, magnitudes);
assert (magnitudes[bin - 1] < 0.001);
assert (magnitudes[bin] > 0.5);
assert (magnitudes[bin + 1] < 0.001);
}
private void addSineWave(int size, int bin, double[] ar, double amplitude) {
double phase = 0.0;
double phaseIncrement = 2.0 * Math.PI * bin / size;
for (int i = 0; i < size; i++) {
ar[i] += Math.sin(phase) * amplitude;
// System.out.println( i + " = " + ar[i] );
phase += phaseIncrement;
}
}
private void addSineWave(int size, int bin, float[] ar, float amplitude) {
float phase = 0.0f;
float phaseIncrement = (float) (2.0 * Math.PI * bin / size);
for (int i = 0; i < size; i++) {
ar[i] += (float) Math.sin(phase) * amplitude;
// System.out.println( i + " = " + ar[i] );
phase += phaseIncrement;
}
}
private void stopSynth() {
synth.stop();
}
private void startSynth() {
synth = JSyn.createSynthesizer(); // Mac
// synth = JSyn.createSynthesizer( new JSynAndroidAudioDevice() ); // Android
synth.setRealTime(false);
pass = new PassThrough();
synth.add(pass);
synth.start();
pass.start();
}
private void benchmarkOscillator(Class<?> clazz, int count, double realTime)
throws InstantiationException, IllegalAccessException, InterruptedException {
startSynth();
for (int i = 0; i < count; i++) {
UnitOscillator osc = (UnitOscillator) clazz.newInstance();
osc.output.connect(pass.input);
synth.add(osc);
}
startTiming();
synth.sleepFor(realTime);
endTiming(clazz, count, realTime);
stopSynth();
}
private void benchmarkPitchDetector(int count, double realTime) throws InstantiationException,
IllegalAccessException, InterruptedException {
startSynth();
PitchDetector detector = new PitchDetector();
synth.add(detector);
double frequency = 198.0;
double period = synth.getFrameRate() / frequency;
// simple harmonic synthesis
for (int i = 0; i < count; i++) {
SineOscillator osc = new SineOscillator();
synth.add(osc);
osc.frequency.set(frequency * (i + 1));
osc.amplitude.set(0.5 * (1.0 - (i * 0.2)));
osc.output.connect(detector.input);
}
detector.start();
startTiming();
synth.sleepFor(realTime);
endTiming(PitchDetector.class, count, realTime);
double measuredPeriod = detector.period.getValue();
double confidence = detector.confidence.getValue();
System.out.println("period = " + period + ", measured = " + measuredPeriod
+ ", confidence = " + confidence);
if (confidence > 0.1) {
assert (Math.abs(measuredPeriod - period) < 0.1);
}
stopSynth();
}
private void endTiming(Class<?> clazz, int count, double realTime) {
endTime = System.nanoTime();
double elapsedTime = (endTime - startTime) * 1E-9;
double percent = 100.0 * elapsedTime / (realTime * count);
System.out.printf("%32s took %5.3f/%d seconds to process %5.4f of audio = %6.3f%c.\n",
clazz.getSimpleName(), elapsedTime, count, realTime, percent, '%');
}
private void startTiming() {
startTime = System.nanoTime();
}
/**
* @param args
*/
public static void main(String[] args) {
new BenchJSyn().run();
}
}
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