![]() In today’s industries, anechoic chambers are used for performing EMC measurements according to a variety of published EMC standards. To avert this phenomena, anechoic chambers are lined on the inside with materials that are designed to completely absorb all sound waves therefore eliminating any and all reflections. If you’ve ever shouted ‘echo!’ in a large room, you’ve probably noticed some kind of reverberation and you’ve heard your voice repeat a few times. ![]() This combination means that a person or detector exclusively hears direct sounds, no reverberant sounds, in effect simulating being inside an infinitely large room. If designed and assembled correctly, these chambers also do a great job at keeping waves from entering the chamber, specifically they provide shielding from outside interference. The key characteristic of an anechoic chamber is that it’s designed to absorb reflections of waves within the chamber instead of having them bounce off the walls which would cause an echo. An anechoic chamber is a box, chamber or room designed to completely absorb reflections of either sound or electromagnetic waves. The word ‘anechoic’ means simply ‘without echo’. An electromagnetic compatibility ( EMC) or anechoic chamber is a highly specialized piece of test equipment used in the testing of electronic devices against regulatory standards concerning both radiated and conducted radio frequency (RF) emissions and immunity.ĮMC or anechoic chambers are designed to create an enclosure with an extremely high level of shielding attenuation against electromagnetic interference.
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