我想知道是否有一个库或某些东西在给定的采样率(20-20,000 Hz)下播放声音.实际上,我找到了something,但我不明白我是如何让它工作的！

解决方法:

这是完整的示例,不需要任何外部库：

import javax.sound.sampled.*;

public class SoundUtils {

  public static float SAMPLE_RATE = 8000f;

  public static void tone(int hz, int msecs) 
     throws LineUnavailableException 
  {
     tone(hz, msecs, 1.0);
  }

  public static void tone(int hz, int msecs, double vol)
      throws LineUnavailableException 
  {
    byte[] buf = new byte[1];
    AudioFormat af = 
        new AudioFormat(
            SAMPLE_RATE, // sampleRate
            8,           // sampleSizeInBits
            1,           // channels
            true,        // signed
            false);      // bigEndian
    SourceDataLine sdl = AudioSystem.getSourceDataLine(af);
    sdl.open(af);
    sdl.start();
    for (int i=0; i < msecs*8; i++) {
      double angle = i / (SAMPLE_RATE / hz) * 2.0 * Math.PI;
      buf[0] = (byte)(Math.sin(angle) * 127.0 * vol);
      sdl.write(buf,0,1);
    }
    sdl.drain();
    sdl.stop();
    sdl.close();
  }

  public static void main(String[] args) throws Exception {
    SoundUtils.tone(1000,100);
    Thread.sleep(1000);
    SoundUtils.tone(100,1000);
    Thread.sleep(1000);
    SoundUtils.tone(5000,100);
    Thread.sleep(1000);
    SoundUtils.tone(400,500);
    Thread.sleep(1000);
    SoundUtils.tone(400,500, 0.2);

  }
}

资料来源：http://www.rgagnon.com/javadetails/java-0499.html