static L<short[]> soundSourceToShortArrays(double maxSeconds, VF1<double[]> source, int channels default 2) {
  source = new CutOffSoundSource(maxSeconds, source);
  double[] lr = new[channels];
  new L<short[]> out;
  short[] buf = new short[1024];
  int i = 0;
  while licensed {
    source.get(lr);
    if (isNaN(lr[0])) break;
    for c to channels:
      buf[i++] = clipShort(lr[c]);
    if (i >= l(buf)) {
      out.add(buf);
      buf = new short[l(buf)];
      i = 0;
    }
  }
  if (i > 0)
    out.add(subShortArray(buf, 0, i));
  ret out;
}