Re Smell-O-Vision: Subsequent to my post, I read that smell-o-vision actually
existed. But the Bugs Bunny cartoon titled Old Grey Hare goes back to 1944 and
predates (or predicts) an actual realization of smell-o-vision. Yes, Odorama
much easier on atmosphere.
Re Raytheon: Hard to imagine this is new. Spatially separating sounds goes back
to WWII and (as I understand) is why radio operators wore radio receiver on one
side of the head in lieu of bilaterally. And as for threats, the azimuthal
display on radar threat warning systemsshows, in two dimensions, distance to
and quadrant of threat. Azimuth determined by triangulation, threat type by
signature. I assumed there might have already been an audible (voice or tonal)
warning that gave pilots and crew a sense of direction, too, but maybe that was
too obvious (or unnecessary)?
It's certainly known that personal protection devices, particularly earmuffs,
skew sense of direction. This is problem for law enforcement, military, and
even for recreational users. It's a greater issue with full-coverage headgear.
As my research showed (Effects of Binaural Electronic Hearing Protectors on
Localization and Response Time to Sounds in the Horizontal Plane, Noise &
Health, Vol. 9, No. 37, 2007, pp. 83-95), lateralization ok with electronic
binaural protectors, but front-back judgments (including those off to side) can
be unambiguous but wrong. Actually, that was my first attempt at surround sound
(long before I learned of Ambisonics), and I'd be curious if the results would
be similar using an Ambisonic system or wave field synthesis. I chose discrete
locations for stimuli along with a continuous surround of noise. Had the
locations for stimuli presentation been virtual locations (i.e., phantom image,
no speaker), I wonder how listeners
would have responded while donning binaural electronic hearing protectors.
I've proposed using Ambisonics to create listening environments to test
listening in noise (note the use of listening, not hearing), and proposals have
been sent to Army researchers and elsewhere. Gamers have certainly used 3D
audio to assist in their tactics. Now to add smell-o-vision to their arsenal....
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