sclass SubtractedAudio implements IAudioSample {
  IAudioSample source;
  int channels;
  new TreeMap<Double> subtractions;
  
  *() {}
  *(IAudioSample *source) {}
  
  void setSource(IAudioSample source) {
    this.source = source;
    channels = source.channels();
  }
  
  public double sampleRate() { ret sampleRate; }
  public int channels() { ret channels; }
  public simplyCached DoubleRange bounds() { ret source.bounds(); }
  
  void subtractPlateau(double start, double end, double intensity) {
    
  }
  
  public double sampleSum(int channel, double start, double end) {
    ret source.sampleSum(channel, start, end);
  }
}