live streaming using Audio Record and Audio Track Programming Mobile Development by lena1990 … be grateful for any help int bufferSize = AudioRecord.getMinBufferSize(frequency, channelConfiguration, audioEncoding); AudioRecord audioRecord = new AudioRecord( MediaRecorder.AudioSource.MIC, frequency, channelConfiguration, audioEncoding, bufferSize… Re: why do i hear echo in my application Programming Mobile Development by lena1990 … { try { int minBufSize = AudioRecord.getMinBufferSize(sampleRate, channelConfig, audioFormat); Log… { try { int minBufSize1 = AudioRecord.getMinBufferSize(sampleRate, channelConfig, audioFormat); Log.… why do i hear echo in my application Programming Mobile Development by lena1990 hi all, i create full duplex application to transmit voice using udp protocol , i use AudioRecord to record voice and AudioTrack to play it but i hear echo Re: why do i hear echo in my application Programming Mobile Development by JamesCherrill local app sends sound remote app plays it remote microphone hears sound being played remote app sends what it hears back to you you hear an echo Re: why do i hear echo in my application Programming Mobile Development by lena1990 thanks for answering but i hear the echo in the local app first before it is played in the remote app Re: why do i hear echo in my application Programming Mobile Development by JamesCherrill In that case it's probably a problem in your code, so without seeing it there's nothing more we can do.