WL> If you want to *try* to duplicate the human hearing system, start by
WL> instal at least 10 microphones 5mm apart, in each "robot's ear", with
WL> frequency band filters, digitize those 20 analog signals, and feed a
WL> powerful processor that will create a spectrum-spacial map based on
WL> phase, frequency and level.

Actually - not trying to duplicate the human ear-system, only pointing
out how it decodes directions.  Duplicating the mechanism would be a
hardware job like nothing else.  Decoding the frequency spectrum is
more of a mathematical job, and actually kind of doable.

-DS

Who's General Failure and why's he reading my disk?