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This is a "shhh"-throwing tube, used by librarials, to
amplify and direct their shushes. Wispering tubes were a
fad in the 1890s or something. Hitechify this by adding
an equalzer that pumps up high frequencies. Also useful
for street drug deals and surreptitious contraband sales
the guy who sells you the letter w on sesemae
[JesusHChrist, Jul 17 2013]
||Librarials would probably pick you up on your
||So how does this work? Is it actually a ssh-megaphone (perhaps sounding similar to a steam locomotives escape valve)?
||Or is it a remote-controlled whisper tube, which can be manouvered using long levers, cables or motors to track across the ceiling and place the exit funnel inches above the chatterers head?
||"shhh" That is a cute kid and has really good lungs.
||I was thinking something like the first, a captain's
telescope-like device that you could whip out of the desk,
elongate with a satisfying "cl-cl-cl-click", aim at the
offender and the with a blow-gun-like exhale, deliver the
||But the second possibility is interesting. In the basement
of the Library of Congress there are side-by-side tubes for
information technology cables and for a conveyor belt that
delivers books between buildings. This could be like a third
stream to convey sound in a targeted way. Maybe it could
be combined with the closed circuit tv security system.