static L<IntRange> autoClipRecording(S name) {
  File f = recordingsDir(name);
  Clip clip = spectro_clipFromFile(f);
  BWImage img = clipToFrequencyImage(clip);
  L<IntRange> parts = audioSplit3(img);
  spectro_intRangesToWAV(clip, parts, recordingsDir("clipped/" + f.getName()));
  ret parts;
}