class SignalListener implements AudioListener
{
  float[] left;
  float[] right;
  
  SignalListener(int bsize)
  {
    left = new float[bsize];
    right = new float[bsize];
  }
  
  void samples(float[] s)
  {
    left = s;
  }
  
  void samples(float[] l, float[] r)
  {
    System.arraycopy(l, 0, left, 0, l.length);
    System.arraycopy(r, 0, right, 0, r.length);
  }
  
  float get(int i)
  {
    return (left[i] + right[i]) / 2;
  }
}