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!7

cmodule BaseDrumFinder > DynPrintLog {
  new SimpleBaseDrumFinder2 finder;
  
  start {
    dm_requireLiveAudioFFT();

    dm_vmBus_onMessage_q newAudioFrequencyImage(voidfunc(virtual BWImage img) {
      float[] b = bwImageColumnBrightnesses_generic(img);
      L<IntRange> ranges = finder.addFrequencyImageBrightnesses(b);
      int[] gaps = intRangeGaps(ranges);
      if (empty(gaps)) ret;
      sort(gaps);
      MultiSet<Int> ms = intArrayAsTreeMultiSet(gaps);
      new Best<Int> mostCommonGap;
      for (int gap : keys(ms))
        best.put(gap, ms.get(gap-1)+ms.get(gap)+ms.get(gap+1));
      Int bestGap = best!;
      double freq = audio_frequencyImageWidthPerSecond()/gap;
      printVars_str(+bestGap, +freq);
    });
  }
}