Java生成声音

Question

我创建了一个乒乓克隆，当碰撞发生时，我想添加一些声音效果。我的问题是，考虑到我的整个应用程序只有90行代码，我能找到的关于合成声音的每个示例都需要大约30行代码。我正在寻找一种更简单的方法。有没有一种简单的方法可以制造出不同音调的嘟嘟声？持续时间并不重要。我只想要一系列不同音调的嘟嘟声。

Answer 1

下面是取自(缩短) Java Sound - Example: Code to generate audio tone的一个小示例

    byte[] buf = new byte[ 1 ];;
    AudioFormat af = new AudioFormat( (float )44100, 8, 1, true, false );
    SourceDataLine sdl = AudioSystem.getSourceDataLine( af );
    sdl.open();
    sdl.start();
    for( int i = 0; i < 1000 * (float )44100 / 1000; i++ ) {
        double angle = i / ( (float )44100 / 440 ) * 2.0 * Math.PI;
        buf[ 0 ] = (byte )( Math.sin( angle ) * 100 );
        sdl.write( buf, 0, 1 );
    }
    sdl.drain();
    sdl.stop();

Answer 2

java.awt.Toolkit.getDefaultToolkit().beep()

连续的嘟嘟声？

int numbeeps = 10;

for(int x=0;x<numbeeps;x++)
{
  java.awt.Toolkit.getDefaultToolkit().beep();
}

Answer 3

下面是与上面相同的代码，其中包含16位的描述

import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.SourceDataLine;

public class MakeSound {
  public static void main(String[] args) throws LineUnavailableException {
    System.out.println("Make sound");
    byte[] buf = new byte[2];
    int frequency = 44100; //44100 sample points per 1 second
    AudioFormat af = new AudioFormat((float) frequency, 16, 1, true, false);
    SourceDataLine sdl = AudioSystem.getSourceDataLine(af);
    sdl.open();
    sdl.start();
    int durationMs = 5000;
    int numberOfTimesFullSinFuncPerSec = 441; //number of times in 1sec sin function repeats
    for (int i = 0; i < durationMs * (float) 44100 / 1000; i++) { //1000 ms in 1 second
      float numberOfSamplesToRepresentFullSin= (float) frequency / numberOfTimesFullSinFuncPerSec;
      double angle = i / (numberOfSamplesToRepresentFullSin/ 2.0) * Math.PI;  // /divide with 2 since sin goes 0PI to 2PI
      short a = (short) (Math.sin(angle) * 32767);  //32767 - max value for sample to take (-32767 to 32767)
      buf[0] = (byte) (a & 0xFF); //write 8bits ________WWWWWWWW out of 16
      buf[1] = (byte) (a >> 8); //write 8bits WWWWWWWW________ out of 16
      sdl.write(buf, 0, 2);
    }
    sdl.drain();
    sdl.stop();
  }
}