Audio file is play late after write in buffer in android Audio Tack

Question

when i increase the size of buffer the audio sound that will write on buffer is play late.And when i discrease the size of buffer the file is played correctly means the file is play on time not late. any one can help ... The buffer size is 64k.

public class MediaSPK
{
    private static final int RECORDER_SAMPLERATE = 16000;
    private static final int RECORDER_CHANNELS = AudioFormat.CHANNEL_OUT_MONO;
    private static final int RECORDER_AUDIO_ENCODING = AudioFormat.ENCODING_PCM_16BIT;

    VaxSIPUserAgent m_objVaxSIPUserAgent;

    boolean m_bMuteSpk = false;
    boolean m_bPlay = false;

    AudioTrack m_objAudioTrack = null;

    public MediaSPK(VaxSIPUserAgent objVaxSIPUserAgent)
    {
        m_objVaxSIPUserAgent = objVaxSIPUserAgent;
    }

    public void OpenSpk() 
    {
        int nMinBuffSize = AudioTrack.getMinBufferSize(RECORDER_SAMPLERATE, RECORDER_CHANNELS, RECORDER_AUDIO_ENCODING);

        //Log.i("size SPK", "" + m_nMinBuffSize);

        m_objAudioTrack = new  AudioTrack(AudioManager.STREAM_VOICE_CALL, RECORDER_SAMPLERATE, RECORDER_CHANNELS, RECORDER_AUDIO_ENCODING, 64000, AudioTrack.MODE_STREAM);
        m_objAudioTrack.play();

        m_bPlay = false;
    }

    public void PlaySpk(byte[] aData, int nDataSize)
    {
        if(m_bMuteSpk)
        {
            byte[] aDataSilence = new byte[nDataSize];
            m_objAudioTrack.write(aDataSilence, 0, nDataSize);
        }
        else
        {
            m_objAudioTrack.write(aData, 0, nDataSize);
        }
    }

    public void Mute(boolean bEnable)
    {
        //m_bMuteSpk = bEnable;

        //m_objAudioTrack
    }

    public void CloseSpk() 
    {
        if(m_objAudioTrack == null)
            return;

        try 
        {
            m_objAudioTrack.stop();
            m_objAudioTrack.release();
            m_objAudioTrack = null;
        } 
        catch (IllegalStateException e) 
        {
            e.printStackTrace();
        }

    }
}

Answer 1

May be you are putting the whole operation on the single thread try to split out the operation play the audio in a seperate thread by using

Handler mHandler = new Handler();

mHandler.postDelayed(new Runnable(), delay);