summing the plurality of {HEAD ~ values} in {TAIL ~ each} of memory locations 2N+1 to 1 to produce a filter output and storing said filter output in a memory storage device 
in
summing the plurality of { HEAD ~ values } in { TAIL ~ each } of memory locations 2N+1 to 1 to produce a filter output and storing said filter output in a memory storage device
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH