static LPair<LongRange, Double> runSimpleBaseDrumFinder1OnBrightnessArray(float[] brightnesses) {
  new SimpleBaseDrumFinder1 finder;
  new LPair<LongRange, Double> l;
  for (float b : brightnesses) {
    finder.addFrequencyImageBrightness(b);
    addIfNotNull(l, finder.getAndClearLastEvent());
  }
  ret l;
}