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• s  not having or producing echoes; sound-absorbent
  an anechoic chamber

News & Articles

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• Science Happens In Places That Are Beautiful By Accident
  Those spikey deals look pretty menacing. It wouldn't be a bad guess to think that they're abstract art meant to invoke a Medieval torture aesthetic. But that's way off. The infinitely repeating barbs are part of the anechoic chambers at the Technical University of Denmark. Basically they absorb sound and electromagnetic waves so scientists can test wave-emitting devices for things like volume ...
  June 19, 2013 - Gizmodo