See Anechoic chamber for the basic design, but be aware that it works only because the light source is'inside'the room.
42.
Anechoic chambers, a term coined by American acoustics expert Leo Beranek, were originally used in the context of acoustics ( reflections of a room.
43.
These bands included "'Anechoic "', a local band from Leeds who drummer Mike Heaton had personally signed . "'
44.
A special anechoic coating made from a mixture of gum, asbestos, and adhesives was applied to the hulls from the waterline to the bilge keel.
45.
Paul Barton has spent a lot of time during the past few decades researching his speakers in the anechoic chambers at the National Research Council in Ottawa.
46.
AFFTC resources include the test and evaluation mission simulator, the Benefield Anechoic Chamber, Ridley Mission Control, and the Integration Facility for Avionics Systems Testing.
47.
Thus, there is no assured procedure which will maximize speaker performance in any listening space ( with the exception of the sonically unpleasant anechoic chamber ).
48.
Anechoic tiles are fitted on casings and fins to absorb the sound waves of active sonar, which results in a reduction and distortion of the return signal.
49.
Robinson and Dadson refined the process in 1956 to obtain a new set of equal-loudness curves for a frontal sound source measured in an anechoic chamber.
50.
The National Research Council in Canada has a modern anechoic chamber, and has posted a video on the Web, noting these as well as other constructional details.
