{HEAD ~ a first filter bank} receiving {TAIL ~ an input signal} and providing frequency estimates for an initial indication of a presence of each of said targeted frequencies 
receiving
{ HEAD ~ a first filter bank } receiving { TAIL ~ an input signal } and providing frequency estimates for an initial indication of a presence of each of said targeted frequencies
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH