recording the digital sample data in association with the respective time difference at {HEAD ~ the transition} of {TAIL ~ the sample clock} 
of
recording the digital sample data in association with the respective time difference at { HEAD ~ the transition } of { TAIL ~ the sample clock }
OTH 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