Emplore your Ears!
-
Sounds terrible?
Fix it with a spanner. Possibly some other things also. -
Watch Clouds
Look up at the sky. It's good to do so once in a while.
-
Through the Grinder?
Put it back together again. -
The Murray Hill anechoic chamber
An anechoic chamber is a room designed to completely absorb reflections of either sound or electromagnetic waves. They are also often isolated from waves entering from their surroundings. This combination means that a person or detector exclusively hears direct sounds, in effect simulating being inside an infinitely large room.
(source: wikipedia.org)
The Murray Hill anechoic chamber, built in 1947, is the world's oldest wedge-based anechoic chamber. The interior room measures approximately 30 feet high by 28 feet wide by 32 feet deep. The exterior cement and brick walls are about 3 feet thick to reduce outside noise.
Large fiberglass wedges mounted on the interior surfaces of the chamber absorb echoes or reflections. The wedge-shaped absorbers are 4.5 feet long and 2 feet square at the base. The wedge shape was chosen to "impedance match" the absorber to the surrounding air.
The chamber absorbs more than 99.995 percent of the incident acoustic energy above 200 Hz. At one time the Murray Hill chamber was cited in the Guinness Book of World Records as the world's quietest room.
(source: bell-labs.com)
