It is hardly heavy science, but people who have not
tried it are always pleasantly surprised by the barrier
results. Even if one does barrier in front only, and even
a small one like holding a pillow to your nose edge on,
the cleanliness of the sound is surprising.
It is debatable whether the stereo is better with ordinary
recordings, most of which do not have anything much resembling
real stereo to begin with. But the clean up effect is
very attractive. Or at least I find it so.
At the risk of creating a whole group of people who wander
around art museums looking like crazy people in addition to just
myself, I bring to your attention a sort of converse effect.
If you look at a perspective picture --painting with well done
perspective, or a photo--with one eye only , other eye close
and moreover look through a tube(a rolled museum brochure works fine)
so that the picture is visible but nothing else is--no other objects, no
wall on either side--the three dimensional effect of the perspective
is startlingly enhanced.
The first time one tries this, it is really jaw dropping.
The reason is apparently that the brain, deprived of binaural vision,
goes for the next best kind of inference--in a big way.
I am tempted to add that it is much the same mechanism where
in Blumlein the suppression of transient time of arrival makes the brain
just go for amplitude gung ho except I know that would get on JJs nerves.
And anyway it is probably not quite true!
But the three d thing is for real. (I found this out from Francis Crick's
book. Even though I knew Sir Francis slightly, I never had the chance
to discuss this with him, since I never saw him again after I read the
book, more's the pity).
Try this! It will change your life.
Robert
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