Patent ID: 7430152

Claim:
A system for transmitting, via a RF link, to remote equipment acoustic information having an acoustic bandwidth and a predetermined frequency spectrum; said system comprising: a) an A/D converter receiving acoustic signals each signal having a frequency within said acoustic bandwidth, said A/D converter providing a corresponding digital output for each received acoustic signal; b) four beam formers receiving said digital outputs of said A/D converter and providing beams at respective outputs for each of said corresponding digital outputs of said A/D converter, each of said four formers having an assigned sub-band, said four (4) beam formers, respectively providing sub-bands 1 to 4 , with sub-band 1 comprising twelve (12) beams, sub-band 2 comprising sixteen (16) beams, sub-band 3 comprising eighteen (18) beams, and sub-band 4 comprising twenty-four (24) beams; c) one or more band shifters respectively interconnected to said outputs of said beam formers, each of said one or more band shifters shifting the frequency spectrum of the assigned sub-band of a respective output of said four beam formers and providing a respective output; and, d) one or more filters receiving the output of said one or more band shifters and providing a respective output that prohibits all, but the specified range of said frequency spectrum of respective outputs of said four beam formers.