PCM 原始字节 [] 到 Android 上的音频 [英] PCM Raw Bytes [] To Audio on Android

问题描述

我目前有一个字节数组形式的 PCM 音频.格式是有符号的 16 位小端.我想将其转换为一些可在 Android 上播放的格式，最好是 3.2 或更高版本.有没有人有关于如何做到这一点的建议?我做了一些研究并尝试了以下方法，但都没有成功.如果有人能提出更好的方法或指出我哪里出错了，我们将不胜感激.

I currently have a PCM audio in the form of a byte array. The format is signed 16 bit little endian. I would like to convert this to some playable format on the Android, preferably version 3.2 or higher. Does anyone have suggestions on how this can be done? I have done some research and tried the following below, but none were successful. It would be much appreciated if anyone can suggest a better way or indicate where I have gone wrong.

我尝试使用正确的音频设置创建 AudioFormat，但是 Android 不支持 javax.sound.sampled 库.

I have tried creating an AudioFormat with the correct audio settings, however Android does not support the javax.sound.sampled library.

我还尝试将 PCM 数据写入波形文件，但在获取所有必要的 wav 标头信息时遇到了麻烦.

I have also tried writing the PCM data into a wave file, but I am running into trouble getting all of the necessary wav header information.

我也尝试过使用 Android 提供的 AudioTrack 类来播放 PCM 数据.但是，我似乎听不到任何声音.这是我的方法:

I have also tried using the AudioTrack class offered by the Android, to play the PCM data. However, I can't seem to hear any sound. Here is my method:

    public void playback(){
         try{
              AudioTrack audioTrack = new  AudioTrack(AudioManager.STREAM_VOICE_CALL, 8000, AudioFormat.CHANNEL_CONFIGURATION_MONO, AudioFormat.ENCODING_PCM_16BIT, 500000, AudioTrack.MODE_STATIC);
              audioTrack.write(audio, 0, 500000);

      } catch(Throwable t){
        Log.d("Audio","Playback Failed");
    }
}

任何建议将不胜感激.

推荐答案

http://developer.android.com/reference/android/media/AudioTrack.html

这个类看起来正是你需要的！

This class looks like it has exactly what you need!

write(byte[] audioData, int offsetInBytes, int sizeInBytes)

将音频数据写入音频硬件进行播放.

Writes the audio data to the audio hardware for playback.

编辑

将您的流更改为 AudioManager.STREAM_MUSIC

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