The server 14, wherein the processor is operative to perform {TAIL ~ a fast Fourier transform operation} on {HEAD ~ the raw signal data} 
The server 14 , wherein the processor is operative to perform { TAIL ~ a fast Fourier transform operation } on { HEAD ~ the raw signal data }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD