- The name "anechoic" literally means "without echo".
- Built in 1940 - The world's oldest wedge-based anechoic chamber.
- Interior room - 30 feet high by 28 feet wide by 32 feet deep.
- The exterior brick walls are 3 feet thick to reduce outside noise.
- Large fiberglass wedges mounted on the interior surfaces of the chamber absorb echoes or reflections.
- The chamber absorbs over 99.995% of the incident acoustic energy above 200 Hz.
- The anechoic chamber has been used for psychoacoustic work relating to loudness.
- At one time the Murray Hill chamber was cited in the Guinness Book of World Records as the world's quietest room.
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