Android AuidoRecord big edge noise recorded side put whatever reason, seek help ~ ~ Daniel

android audioRecord

Code is as follows:

 public class MainActivity extends Activity {
/ ** Called when the activity is first created. * / 
Button btnRecord, btnStop, btnExit; 
SeekBar skbVolume ;/ / adjust the volume 
boolean isRecording = false ;/ / if recording marks 
static final int frequency = 8000; 
static final int channelConfiguration = AudioFormat.CHANNEL_CONFIGURATION_MONO; 
static final int audioEncoding = AudioFormat.ENCODING_PCM_16BIT; 
int recBufSize, playBufSize; 
AudioRecord audioRecord; 
AudioTrack audioTrack; 

@ Override 
public void onCreate (Bundle savedInstanceState) {
super.onCreate (savedInstanceState); 
setContentView (R.layout.activity_main); 
recBufSize = AudioRecord.getMinBufferSize (frequency, 
channelConfiguration, audioEncoding); 

playBufSize = AudioTrack.getMinBufferSize (frequency, 
channelConfiguration, audioEncoding); 
/ / ----------------------------------------- 
audioRecord = new AudioRecord (MediaRecorder.AudioSource.MIC, frequency, 
channelConfiguration, audioEncoding, recBufSize); 

audioTrack = new AudioTrack (AudioManager.STREAM_MUSIC, frequency, 
channelConfiguration, audioEncoding, playBufSize, 
AudioTrack.MODE_STREAM); 
/ / ------------------------------------------ 
btnRecord = (Button) this.findViewById (R.id.btnRecord); 
btnRecord.setOnClickListener (new ClickEvent ()); 
btnStop = (Button) this.findViewById (R.id.btnStop); 
btnStop.setOnClickListener (new ClickEvent ()); 
btnExit = (Button) this.findViewById (R.id.btnExit); 
btnExit.setOnClickListener (new ClickEvent ()); 

} 

@ Override 
protected void onDestroy () {
super.onDestroy (); 
android.os.Process.killProcess (android.os.Process.myPid ()); 
} 

class ClickEvent implements View.OnClickListener {

public void onClick (View v) {
if (v == btnRecord) {
isRecording = true; 
new RecordPlayThread (). start () ;/ / open a thread-record side put 
} Else if (v == btnStop) {
isRecording = false; 
} Else if (v == btnExit) {
isRecording = false; 
MainActivity.this.finish (); 
} 
} 
} [Code = java] 

class RecordPlayThread extends Thread {
public void run () {
try {
byte [] buffer = new byte [recBufSize];
audioRecord.startRecording () ;/ / start recording
audioTrack.play () ;/ / start playing

while (isRecording) {
/ / Save the data to the buffer
from MICint size = recBufSize;
int bufferReadResult = audioRecord.read (buffer, 0,
recBufSize);

byte [] tmpBuf = new byte [bufferReadResult];
System.arraycopy (buffer, 0, tmpBuf, 0, bufferReadResult);
/ / Write data that is playing
audioTrack.write (tmpBuf, 0, tmpBuf.length);
}
audioTrack.stop ();
audioRecord.stop ();
} Catch (Throwable t) {
Toast.makeText (MainActivity.this, t.getMessage (), 1000);
}
}
};
} [/ Code]

Achieved record while playing side, the noise is very large, do not know how, knees and begged for help, Daniel

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