android - 嗡嗡声在Android的Audiotrack上播放mp3

我尝试在我的Android仿真器的SDCard中播放mp3文件，但结果是发出一些奇怪的嗡嗡声。我确定采样率是44.1k hz，我不知道还有什么问题

    if(AudioTrack.MODE_STATIC != mode && AudioTrack.MODE_STREAM != mode)
            throw new InvalidParameterException();

    String audioFilePath = "/sdcard/test.mp3";
    long fileSize = 0;
    long bytesWritten = 0;
    int bytesRead = 0;
    int bufferSize = 0;
    byte[] buffer;
    AudioTrack track;

            File audioFile = new File(audioFilePath);
            fileSize = audioFile.length();
    if(AudioTrack.MODE_STREAM == mode)
    {
            bufferSize = 8000;
    }
    else
    {// AudioTrack.MODE_STATIC
            bufferSize = (int)fileSize;
    }
    buffer = new byte[bufferSize];
    track = new AudioTrack(AudioManager.STREAM_MUSIC,/* this is for pcm*/ /*22050*/ /*this is for mp3*/ 44100,
                            AudioFormat.CHANNEL_CONFIGURATION_MONO, AudioFormat.ENCODING_DEFAULT/*AudioFormat.ENCODING_PCM_16BIT*/,
                            bufferSize, mode);
    // in stream mode,
    //   1. start track playback
    //   2. write data to track
    if(AudioTrack.MODE_STREAM == mode)
            track.play();
    FileInputStream audioStream = null;
    try {
                    audioStream = new FileInputStream(audioFile);
            } catch (FileNotFoundException e) {
                    e.printStackTrace();
            }

    while(bytesWritten < fileSize)
    {
            try {
                    bytesRead = audioStream.read(buffer, 0, bufferSize);
                    } catch (IOException e) {
                            // TODO Auto-generated catch block
                            e.printStackTrace();
                    }
            bytesWritten += track.write(buffer, 0, bytesRead);
    }
    // in static mode,
    //   1. write data to track
    //   2. start track playback
    if(AudioTrack.MODE_STATIC == mode)
            track.play();

最佳答案

听到奇怪的声音是正确的，因为您需要先解码MP3
您将其输入到AudioTrack! AudioTrack仅播放原始PCM音频。

关于android - 嗡嗡声在Android的Audiotrack上播放mp3，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/6743286/