我想创建一个使用
Java的彩色噪声生成器,它将能够生成本文中定义的所有颜色：
http://en.wikipedia.org/wiki/Colors_of_noise
>从最简单的一个,白噪声开始,我将如何产生噪音,以便它可以无限播放？
>从那里,我如何修改我的生成器以生成任何颜色？
我对如何产生噪声本身感到困惑,并对如何生成我可以通过扬声器输出它感到困惑.
我还看了另一个问题：Java generating sound
但我不完全理解其中一条评论中给出的代码中发生了什么.它也没有告诉我该代码会产生什么样的噪音,所以我不知道如何修改它会产生白噪声.
解决方法
这是一个用纯Java生成白噪声的程序.它可以很容易地改变以产生其他颜色的噪音.
import javax.sound.sampled.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.nio.ByteBuffer;
import java.util.Random;
public class WhiteNoise extends JFrame {
private GeneratorThread generatorThread;
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
WhiteNoise frame = new WhiteNoise();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
public WhiteNoise() {
addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent e) {
generatorThread.exit();
System.exit(0);
}
});
setTitle("White Noise Generator");
setResizable(false);
setDefaultCloSEOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100,100,200,50);
setLocationRelativeTo(null);
getContentPane().setLayout(new BorderLayout(0,0));
generatorThread = new GeneratorThread();
generatorThread.start();
}
class GeneratorThread extends Thread {
final static public int SAMPLE_SIZE = 2;
final static public int PACKET_SIZE = 5000;
SourceDataLine line;
public boolean exitExecution = false;
public void run() {
try {
AudioFormat format = new AudioFormat(44100,16,1,true,true);
DataLine.Info info = new DataLine.Info(SourceDataLine.class,format,PACKET_SIZE * 2);
if (!AudioSystem.isLineSupported(info)) {
throw new LineUnavailableException();
}
line = (SourceDataLine)AudioSystem.getLine(info);
line.open(format);
line.start();
} catch (LineUnavailableException e) {
e.printStackTrace();
System.exit(-1);
}
ByteBuffer buffer = ByteBuffer.allocate(PACKET_SIZE);
Random random = new Random();
while (exitExecution == false) {
buffer.clear();
for (int i=0; i < PACKET_SIZE /SAMPLE_SIZE; i++) {
buffer.putShort((short) (random.nextGaussian() * Short.MAX_VALUE));
}
line.write(buffer.array(),buffer.position());
}
line.drain();
line.close();
}
public void exit() {
exitExecution =true;
}
}
}
