static Pair<L<IntRange>, File> autoClipRecording(S name) {
  ret autoClipRecording(recordingsDir(name));
}
  
static Pair<L<IntRange>, File> autoClipRecording(File f) {
  Clip clip = spectro_clipFromFile(f);
  BWImage img = clipToFrequencyImage(clip);
  L<IntRange> parts = audioSplit3(img);
  File clipFile = fileInSubDir(f, "clipped");
  File imgFile = replaceExtension(clipFile, ".png");
  if (empty(parts))
    deleteFiles(clipFile, imgFile);
  else {
    spectro_intRangesToWAV(clip, parts, clipFile);
    savePNG(imgFile,
      mergeBWImagesHorizontally(horizontalIntRangesToImages(img, parts), spaceColor := 0).getBufferedImage());
  }
  ret pair(parts, clipFile);
}