The filtered signals from {TAIL ~ the four filters} are passed sequentially through the four to one multiplexer with {HEAD ~ the multiplexer control signal} being supplied by the controller 
The filtered signals from { TAIL ~ the four filters } are passed sequentially through the four to one multiplexer with { HEAD ~ the multiplexer control signal } being supplied by the controller
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH