static IQuerySound shortSamplesToQuerySound(int channels default 1, short[] samples) {
  ret new IQuerySound {
    public int channels() { ret channels; }
    
    // time is in samples
    public double getSample(int channel, double time) {
      int t = ifloor(time);
      t /= channels;
      ret t < 0 || t >= l(samples) ? 0 : samples[t];
    }
  };
}