在Java中播放WAV时遇到问题

Question

我正在尝试玩

PCM_UNSIGNED 11025.0 Hz, 8 bit, mono, 1 bytes/frame

文件如此[处（1）])和here（2）所述。

（1）一个不好的例子：

import  sun.audio.*;    //import the sun.audio package
import  java.io.*;

//** add this into your application code as appropriate
// Open an input stream  to the audio file.
InputStream in = new FileInputStream(Filename);

// Create an AudioStream object from the input stream.
AudioStream as = new AudioStream(in);         

// Use the static class member "player" from class AudioPlayer to play
// clip.
AudioPlayer.player.start(as);            

// Similarly, to stop the audio.
AudioPlayer.player.stop(as); 

第一种方法可行，但我不想依赖sun.*某些东西。第二个结果是仅播放了一些前导帧，听起来更像是单击。从ByteArrayInputStream播放时，不会是IO问题。

请与您分享为什么会发生这种情况。TIA。

Answer 1

我不确定为什么您链接的第二种方法会启动另一个线程；我相信音频还是会以自己的方式播放。剪辑播放完毕之前，您的应用程序完成了问题吗？

import javax.sound.sampled.*;
import java.io.File;
import java.io.IOException;
import javax.sound.sampled.LineEvent.Type;

private static void playClip(File clipFile) throws IOException, 
  UnsupportedAudioFileException, LineUnavailableException, InterruptedException {
  class AudioListener implements LineListener {
    private boolean done = false;
    @Override public synchronized void update(LineEvent event) {
      Type eventType = event.getType();
      if (eventType == Type.STOP || eventType == Type.CLOSE) {
        done = true;
        notifyAll();
      }
    }
    public synchronized void waitUntilDone() throws InterruptedException {
      while (!done) { wait(); }
    }
  }
  AudioListener listener = new AudioListener();
  AudioInputStream audioInputStream = AudioSystem.getAudioInputStream(clipFile);
  try {
    Clip clip = AudioSystem.getClip();
    clip.addLineListener(listener);
    clip.open(audioInputStream);
    try {
      clip.start();
      listener.waitUntilDone();
    } finally {
      clip.close();
    }
  } finally {
    audioInputStream.close();
  }
}