// profileSamplingInterval: seconds per profile entry
static L<DoubleRange> audio_findSpeechPartsFromVolumeProfile(float[] profile, double profileSamplingInterval, O... _) {
  optPar double volumeThreshold = 0.15;
  //optPar double minSpeechDuration = 0.2;
  optPar double minSilenceDuration = 0.5;
  optPar double pre = 0.2;
  optPar double post = 0.2;
  
  //int minSpeech = iround(minSpeechDuration/profileSamplingInterval);
  int minSilence = iround(minSilenceDuration/profileSamplingInterval);
  int preTicks = iround(pre/profileSamplingInterval);
  int postTicks = iround(post/profileSamplingInterval);
  
  new BitSet bs;
  for i over profile:
    if (profile[i] >= volumeThreshold)
      bs.set(i);
  
  removeNonStreaksFromBitSetShorterThan(bs, minSilence);
  extendStreaksInBitSet(bs, preTicks, postTicks, l(profile));
  
  ret map(bitSetStreaks(bs), r -> intToDoubleRange(profileSamplingInterval, r));
}