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