Whatever became of Motorola's Symphony Chip for analog radio?
It was supposed to perform wonders from current AM broadcast signals.

"Motorola has developed this system to improve radio reception at the
receiver by using the 1,500 MIPs processor to demodulate the received
signal. The improvement comes without any transmission changes required of
the broadcaster."
http://beradio.com/departments/radio...phony_digital/

"Motorola's Symphony digital radio chipset delivers breakthrough AM/FM
reception and performance"

"Unlike other digital radio offerings, the new digital radio chipset does
not require broadcasters to buy new digital broadcast equipment. Neither
does it require consumers to pay a monthly subscription fee like those
charged by satellite services because it operates on traditional AM/FM
analog broadcasts."

http://mrtmag.com/dealers/automotive...phony_digital/


The DSP56371 is priced at $9.95(USD) (suggested list price) for 100,000-unit
quantities.
http://www.motorola.com/mediacenter/...798_23,00.html