Example #1
0
  // open up an audio stream
  private static void init() {
    try {
      // 44,100 samples per second, 16-bit audio, mono, signed PCM, little
      // Endian
      AudioFormat format = new AudioFormat((float) SAMPLE_RATE, BITS_PER_SAMPLE, 1, true, false);
      DataLine.Info info = new DataLine.Info(SourceDataLine.class, format);

      line = (SourceDataLine) AudioSystem.getLine(info);
      line.open(format, SAMPLE_BUFFER_SIZE * BYTES_PER_SAMPLE);

      // the internal buffer is a fraction of the actual buffer size, this
      // choice is arbitrary
      // it gets divided because we can't expect the buffered data to line
      // up exactly with when
      // the sound card decides to push out its samples.
      buffer = new byte[SAMPLE_BUFFER_SIZE * BYTES_PER_SAMPLE / 3];
      listeners = new HashSet<AudioEventListener>();
    } catch (Exception e) {
      System.err.println("Error initializing StdAudio audio system:");
      e.printStackTrace();
      System.exit(1);
    }

    // no sound gets made before this call
    line.start();
  }
Example #2
0
 public void activate() {
   active = true;
   microphone.flush();
   speaker.flush();
   speaker.start();
   blocker.release();
   microphone.start();
   microphone.flush();
 }