srecord noeq SampleIteratorToQuerySound(int channels, ShortIterator it) is IQuerySound {
  int idx = 0;
  
  public int channels() { ret channels; }
  public double getSample(int channel, double time) {
    int t = ifloor(time);
    if (t != idx)
      fail("Wrong time queried: " + time + " / " + idx);
    ++idx;
    if (it == null)
      ret 0;
    else if (!it.hasNext()) {
      it = null;
      ret 0;
    } else
      ret it.next();
  }
}