{HEAD ~ a processing device} that processes said digital input signal and determines a digital output signal, including converting {TAIL ~ the digital input signal} from a time domain into a frequency domain; and 
including converting
{ HEAD ~ a processing device } that processes said digital input signal and determines a digital output signal , including converting { TAIL ~ the digital input signal } from a time domain into a frequency domain ; and
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH