Android AudioTrack全程写块

Question

我正在使用AudioTrack类播放原始声音数据流：

AudioTrack audioTrack;
int sampleRate = 11025;
int channelConfigIn = AudioFormat.CHANNEL_IN_MONO;
int channelConfigOut = AudioFormat.CHANNEL_OUT_STEREO;
int audioFormat = AudioFormat.ENCODING_PCM_16BIT;
.....
int bufferSize = AudioTrack.getMinBufferSize(sampleRate,channelConfigOut,audioFormat);
audioTrack = new AudioTrack(AudioManager.STREAM_VOICE_CALL,sampleRate,channelConfigOut,audioFormat,bufferSize,AudioTrack.MODE_STREAM);
    audioTrack.play();

然后在一个单独的线程上：

while(true)
{
    short [] buffer = new short[14500];
    //fill buffer with sound data
    long time = System.currentTimeMillis();
    audioTrack.write(buffer,0,14500);
    Log.i("time",(System.currentTimeMillis() - time) + "");
}

我的问题是，日志总是显示write方法阻塞了大约0.6秒，这与播放的声音长度(14500个样本)相同，而且在播放过程中手机没有响应，主踏板几乎不能做任何人可以帮助的事情……