summing {HEAD ~ the plurality} of 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 
summing { HEAD ~ the plurality } of 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 HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH 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