// profileSamplingInterval: seconds per profile entry
static L<DoubleRange> ajc_findSpeechPartsFromVolumeProfile(float[] profile) {
  ret audio_findSpeechPartsFromVolumeProfile(profile, profileSamplingInterval,
    volumeThreshold := volumeThresholdPercent/100.0,
    minSilenceDuration := parseDouble(minSilence),
    pre := parseDouble(leadIn),
    post := parseDouble(leadOut));
}