repeating the steps of measuring, identifying and displaying at intervals during {HEAD ~ the transforming} of {TAIL ~ the elemental sound units} to audio signals 
of
repeating the steps of measuring , identifying and displaying at intervals during { HEAD ~ the transforming } of { TAIL ~ the elemental sound units } to audio signals
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH