Immediate Audio Input & Output Android

Question

In my Android App, I would like to take in some audio from the mic of the smartphone and play it immediately, live, like a microphone, with no lag. I am currently thinking of us

Answer 1

try this. I have not run this.

      recorder = new AudioRecord(MediaRecorder.AudioSource.MIC,
      RECORDER_SAMPLERATE, RECORDER_CHANNELS,
      RECORDER_AUDIO_ENCODING, bufferSize * BytesPerElement);

    recorder.startRecording();

    isRecording = true;

    recordingThread = new Thread(new Runnable() {

     public void run() {

      try {
          int intSize = android.media.AudioTrack.getMinBufferSize(RECORDER_SAMPLERATE,AudioFormat.CHANNEL_OUT_MONO , RECORDER_AUDIO_ENCODING);
          byte[] sData = new byte[bufferSize];
          AudioTrack at = new AudioTrack(AudioManager.STREAM_MUSIC, RECORDER_SAMPLERATE, AudioFormat.CHANNEL_OUT_MONO, RECORDER_AUDIO_ENCODING, intSize, AudioTrack.MODE_STREAM);
          while(isRecording){
          recorder.read(sData, 0, bufferSize);  //isRecording = false; onStop button

          if (at!=null) { 
              at.play();
              // Write the byte array to the track
              at.write(sData, 0, sData.length); 
              at.stop();
              at.release();
          }
          }
    } catch (IOException e) {
        e.printStackTrace();
    }
 }
  }, "AudioRecorder Thread");
    recordingThread.start();