The signal digitized in the first signal path and {HEAD ~ the signal} that is digitized in {TAIL ~ the second signal path} are fed to a digital signal processor , which generates the digital output signal  
The signal digitized in the first signal path and { HEAD ~ the signal } that is digitized in { TAIL ~ the second signal path } are fed to a digital signal processor , which generates the digital output signal
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH