Android：混合多个AudioTrack实例？

Question

我需要同时运行两个AudioTrack实例。它们必须单独运行，因为我以不同的可变采样率播放它们。我发现，如果我在同一线程中运行它们，它们将“轮流”运行。我在各自的线程中运行它们，但是音频断断续续。

关于使两个实例更好玩的任何想法？如果没有，那么即使我想以不同的采样率播放两个短缓冲区，也有一些技巧将它们混合在一起。

Answer 1

我有4个音轨同时播放，它们似乎播放得很好。在HTC Desire 1.1ghz
OC上进行测试。我有时会在穿线时遇到小故障。有时，如果所有四个都在播放，则在我尝试加入该线程时不会停止。需要做更多的测试。这是我的课程，用于播放在给定路径下记录的WAV文件

    package com.ron.audio.functions;

import java.io.BufferedInputStream;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;

import android.media.AudioFormat;
import android.media.AudioManager;
import android.media.AudioTrack;

public class AudioPlayManager implements Runnable {

private File fileName;
private volatile boolean playing;

public AudioPlayManager() {
    super();
    setPlaying(false);
}

public void run(){
      // Get the length of the audio stored in the file (16 bit so 2 bytes per short)
      // and create a short array to store the recorded audio.
      int musicLength = (int)(fileName.length()/2);
      short[] music = new short[musicLength];

      try {
        // Create a DataInputStream to read the audio data back from the saved file.
        InputStream is = new FileInputStream(fileName);
        BufferedInputStream bis = new BufferedInputStream(is);
        DataInputStream dis = new DataInputStream(bis);

        // Read the file into the music array.
        int i = 0;
        while (dis.available() > 0) {
          music[i] = dis.readShort();
          i++;
        }

        // Close the input streams.
        dis.close();

        // Create a new AudioTrack object using the same parameters as the AudioRecord
        // object used to create the file.
        AudioTrack audioTrack = new AudioTrack(AudioManager.STREAM_MUSIC, 
                                                11025, 
                                               AudioFormat.CHANNEL_CONFIGURATION_MONO,
                                               AudioFormat.ENCODING_PCM_16BIT, 
                                               musicLength, 
                                               AudioTrack.MODE_STREAM);
        // Start playback
        audioTrack.play();

        // Write the music buffer to the AudioTrack object
        while(playing){
            audioTrack.write(music, 0, musicLength);
        }

      }
      catch(Exception e){
          e.printStackTrace();
      }

}


public void setFileName(File fileName) {
    this.fileName = fileName;
}

public File getFileName() {
    return fileName;
}

public void setPlaying(boolean playing) {
    this.playing = playing;
}

public boolean isPlaying() {
    return playing;
}

}