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Renovating the wheel
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use virtual surround to create auditory 'objects' in 3d space
if you know these 'virtual surround' programs that can emulate sound coming from =any= point in 3d space with a pair of earphones, check this out -
train a person to discern between few audio 'sources' in 3d space, then train him to hear more than one source at a time, and with further training ....
perhaps you could actually 'see' simple 3d models (or in the worse case, you have an interesting alternative output device..)
I wonder how this would work with the blind. they usually have phenomenal hearing.
by the way I believe psychoacoustic models today are not advanced enough for the job.
||On discovery they have shown blind people recognizing buildings, trees, dogs, go shopping and even shake hands with similar technology. What they do is wear a special pair of goggles that acts as sonar. the sound output is converted from ultrasound to ordinary sound and sent to the person's ear. A blind sportsman was even shown to follow a person on a race track for excersize purposes.
||Permit me to be skeptical about shaking hands using sonar. (Unless you're simply detecting which direction the shakee is in, and relying on him/her to grab your hand and pump it wildly.)