From: kwang@zeus.calpoly.edu (<The Scarecrow>)
Subject: 3-D Sound imaging systems
Date: Fri, 15 Nov 1991 07:48:00 GMT
Message-ID: <1991Nov15.074800.248272@zeus.calpoly.edu>
Organization: The Outland Riders



I might be getting ahead of the game here, but I was wondering if
anyone has done or knows of any work that's been done with 3-D sound
imaging systems.  Basically, you will have a fixed set of inputs and
various head-positioning sensors will calculate what sounds will goto
which ear or which speaker on the side of the head. I can see a headset
or helmet with 3 or 4 speakers per side to give true 3-d sound imaging
capability.

I know the military was doing some testing of such systems awhile back,
but never found out if anything had ever become of it.  Such a headset
might be used in union with VR visual systems to give a more complete
idea of the world surrounding them.  One application might be drivers
plugged into their cars, so they can hear other cars around them, while
possibly adding in some noise-cancellation.  

Another interesting possibility is to allow "zoom-in" capability, i.e.
parabolic mic type pickup.  Kill background noise and listen in on
someone's conversation.  Pilots might also use such a 3-D sound imaging
system to receive input on where the enemy is behind him.

Any ideas?  Thoughts?  related projects, work, or research?

   - Kevin Wang
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kwang@polyslo.csc.calpoly.edu, or kwang@hermes.calpoly.edu
   "Reach out and grab someone."
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