Hi Neha,
Did you find a solution to the feedback cancellation problem for android?
Thanks.
Swapnil.
On Thursday, May 26, 2011 at 11:28:29 AM UTC+2, neha wrote:
>
> Is there any way to synchronize the capturing and playback of audio
> data in Android?
>
> I am using audioRecord/track to achieve this.But its producing echo.
> Is there any way to cancel echo.
> My code is-
> {
> isRecording=true;
>
> bufferSize =
> AudioRecord.getMinBufferSize(8000,AudioFormat.CHANNEL_CONFIGURATION_MONO,AudioFormat.ENCODING_PCM_16BIT);
>
>
> audioRecord = new
> AudioRecord(MediaRecorder.AudioSource.MIC,
> 8000,
> AudioFormat.CHANNEL_CONFIGURATION_MONO,AudioFormat.ENCODING_PCM_16BIT,
> bufferSize);
>
> audioRecord.startRecording();
>
> int BUFFER_SIZE_IN_BYTES
> =AudioTrack.getMinBufferSize(RECORDER_SAMPLERATE,AudioFormat.CHANNEL_CONFIGURATION_MONO,RECORDER_AUDIO_ENCODING);
>
>
> AudioTrack audioTrack = new
> AudioTrack(AudioManager.STREAM_SYSTEM,
>
>
> 8000,AudioFormat.CHANNEL_CONFIGURATION_MONO,
>
>
> AudioFormat.ENCODING_PCM_16BIT,
> BUFFER_SIZE_IN_BYTES,
>
> AudioTrack.MODE_STREAM);
> byte[] buffer=new byte[400];
> audioTrack.play();
> while (isRecording) { int bytesRead =
> audioRecord.read(buffer,
> 0,
> 400);
> int bytesWritten =
> audioTrack.write(buffer, 0, 400);
>
> }
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