[android-beginners] android audio issue

[raghu]

Hi,
   i am using android SDK 1.5, below is the code where i am recording
voice from mic and playing it.

problems i am facing are :
 voice quality is not good,
 some background voice is there,
 write is getting blocked.

  i have set the permission in .xml file also like :
                   android.permission.INTERNET,
                   android.permission.MODIFY_AUDIO_SETTINGS,
                   android.permission.RECORD_AUDIO,
android.permission.WRITE_SETTINGS

help required

below is the code :
 to record the audio i am using read() and to play write() is being
called.
is my code correct ?

   public void onCreate(Bundle savedInstanceState)
   {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.main);

       byte[] Buffer = new byte [80000] ;

       int Size = 320 ;
       int BuffLen = 1 ;
       int     SizeSoFar = 0 ;
       int MinBuffSize ;
       int Written = 0 ;
       int temp = 0 ;

       AudioRecord audioRecord = new AudioRecord
(MediaRecorder.AudioSource.MIC, 8000,
 
AudioFormat.CHANNEL_CONFIGURATION_MONO,
AudioFormat.ENCODING_PCM_16BIT, 4096) ;
       audioRecord.startRecording () ;

       MinBuffSize = AudioRecord.getMinBufferSize(8000,2,2);

       AudioTrack track = new AudioTrack (AudioManager.STREAM_MUSIC,
8000,
 
AudioFormat.CHANNEL_CONFIGURATION_MONO ,
AudioFormat.ENCODING_PCM_16BIT,
                       4096, AudioTrack.MODE_STREAM) ;

       track.play() ;

       while (BuffLen != 0)
       {
                SizeSoFar += audioRecord.read (Buffer, 0, Size) ;

               Written = track.write (Buffer, 0, Size) ;
               try
               {
                       Thread.sleep (5) ;
               }
               catch (InterruptedException e)
               {
                       // TODO Auto-generated catch block
                       e.printStackTrace() ;
               }
       }
       audioRecord.stop() ;
       track.stop() ;
   }

help required .






logcat message are :

D/AudioHardware(  556): AudioStreamInGeneric::set(0xad68, 7, 1, 1,
8000)
D/AudioHardware(  556): AudioStreamInGeneric::read(0x40408040, 320)
from fd 7
D/AudioHardware(  556): AudioStreamInGeneric::read(0x40408180, 320)
from fd 7
W/AudioFlinger(  556): AudioRecordThread: buffer overflow
D/AudioHardware(  556): AudioStreamInGeneric::read(0x40408040, 320)
from fd 7
D/AudioHardware(  556): AudioStreamInGeneric::read(0x40408180, 320)
from fd 7
D/AudioHardware(  556): AudioStreamInGeneric::read(0x40408040, 320)
from fd 7
D/AudioHardware(  556): AudioStreamInGeneric::read(0x40408180, 320)
from fd 7
D/AudioHardware(  556): AudioStreamInGeneric::read(0x40408040, 320)
from fd 7
W/AudioFlinger(  556): AudioRecordThread: buffer overflow
D/AudioHardware(  556): AudioStreamInGeneric::read(0x40408180, 320)
from fd 7
D/AudioHardware(  556): AudioStreamInGeneric::read(0x40408040, 320)
from fd 7
D/AudioHardware(  556): AudioStreamInGeneric::read(0x40408180, 320)
from fd 7
D/AudioHardware(  556): AudioStreamInGeneric::read(0x40408040, 320)
from fd 7
D/AudioHardware(  556): AudioStreamInGeneric::read(0x40408180, 320)
from fd 7
D/AudioHardware(  556): AudioStreamInGeneric::read(0x40408040, 320)
from fd 7
D/AudioHardware(  556): AudioStreamInGeneric::read(0x40408180, 320)
from fd 7
D/AudioHardware(  556): AudioStreamInGeneric::read(0x40408040, 320)
from fd 7
W/AudioFlinger(  556): AudioRecordThread: buffer overflow
D/AudioHardware(  556): AudioStreamInGeneric::read(0x40408180, 320)
from fd 7
D/AudioHardware(  556): AudioStreamInGeneric::read(0x40408040, 320)
from fd 7
D/AudioHardware(  556): AudioStreamInGeneric::read(0x40408180, 320)
from fd 7
W/AudioFlinger(  556): AudioRecordThread: buffer overflow
D/AudioHardware(  556): AudioStreamInGeneric::read(0x40408040, 320)
from fd 7
D/AudioHardware(  556): AudioStreamInGeneric::read(0x40408180, 320)
from fd 7
D/AudioHardware(  556): AudioStreamInGeneric::read(0x40408040, 320)
from fd 7
D/AudioHardware(  556): AudioStreamInGeneric::read(0x40408180, 320)
from fd 7
D/AudioHardware(  556): AudioStreamInGeneric::read(0x40408040, 320)
from fd 7
D/AudioHardware(  556): AudioStreamInGeneric::read(0x40408180, 320)
from fd 7
D/AudioHardware(  556): AudioStreamInGeneric::read(0x40408040, 320)
from fd 7
D/AudioHardware(  556): AudioStreamInGeneric::read(0x40408180, 320)
from fd 7
W/AudioFlinger(  556): AudioRecordThread: buffer overflow
D/AudioHardware(  556): AudioStreamInGeneric::read(0x40408040, 320)
from fd 7
D/AudioHardware(  556): AudioStreamInGeneric::read(0x40408180, 320)
from fd 7
D/AudioHardware(  556): AudioStreamInGeneric::read(0x40408040, 320)
from fd 7
W/AudioFlinger(  556): AudioRecordThread: buffer overflow
D/AudioHardware(  556): AudioStreamInGeneric::read(0x40408180, 320)
from fd 7
D/AudioHardware(  556): AudioStreamInGeneric::read(0x40408040, 320)
from fd 7
D/AudioHardware(  556): AudioStreamInGeneric::read(0x40408180, 320)
from fd 7
D/AudioHardware(  556): AudioStreamInGeneric::read(0x40408040, 320)
from fd 7
W/AudioFlinger(  556): AudioRecordThread: buffer overflow

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