Eckel Anechoic Chamber Built for Microsoft Certified as The Quietest Place on Earth

Microsoft contracted Eckel Noise Control Technologies to design and build a new anechoic chamber for audio and device testing at its Redmond, Washington Audio Lab. Independent tests of the main chamber by Brüel & Kjær confirmed that — at -20.6 dB — Microsoft and Eckel had shattered the previous world record for Quietest Place on Earth and far surpassed engineers’ prediction of -16 dB.