{"id":11853,"date":"2015-10-26T10:33:37","date_gmt":"2015-10-26T14:33:37","guid":{"rendered":"http:\/\/www.constructionspecifier.com\/?p=11853"},"modified":"2016-12-19T14:33:15","modified_gmt":"2016-12-19T19:33:15","slug":"microsoft-wins-world-record-bid-for-quietest-place-on-earth","status":"publish","type":"post","link":"https:\/\/www.constructionspecifier.com\/microsoft-wins-world-record-bid-for-quietest-place-on-earth\/","title":{"rendered":"Check out the acoustics behind the quietest place on the planet"},"content":{"rendered":"
\"Microsoft_Eckel_Chamber\"<\/a>
Microsoft has landed a Guinness World Record for the quietest room on earth with the help of Eckel Noise Control Technologies that installed an anechoic chamber measuring at \u201320 dB. Photo courtesy Space Age Media Consultants<\/span><\/span><\/figcaption><\/figure>\n

Eckel Noise Control Technologies <\/a>created a new anechoic chamber for Microsoft that won the Guinness World Record<\/a> for quietest room in the world.<\/p>\n

Microsoft contacted the company in March 2014 to build the chamber for audio and device testing at its Audio Lab in Redmond, Washington. The installation started in May of that year and was completed in July.<\/p>\n

\u201cWe designed this and other super-quiet acoustically controlled chambers to engineer and build best-in-class audio products at Microsoft,\u201d said the company\u2019s principal human factors engineer, Hundraj Gopal. \u201cWe use these facilities for designing products, like the Surface, HoloLens and Cortana, and we take great pride in them.\u201d<\/p>\n

Independent tests of the main chamber were done by professional sound specialists from Br\u00fcel and Kjaer, who confirmed a \u201320.6 dB measurement, which surpassed the engineers\u2019 predictions for \u201316 dB. The previous world record was held by Orfield Laboratories in Minneapolis, which had an Eckel anechoic chamber measuring at \u201313 dB.<\/p>\n

To put sound measurement in perspective, the quietest known sound is random particle movement at \u201323 dB. Calm breathing measures at +10 dB, rustling leaves is +20 dB, and a jet plane takeoff is +150 dB.<\/p>\n

Anechoic chambers are echo-free with a sound absorption level of 99 to 100 percent. The Microsoft chamber\u2019s walls, ceiling, and door were fitted with sound-absorbing wedges. There were also anti-vibration mounts isolating the chamber from the rest of the building\u2019s foundation.<\/p>\n","protected":false},"excerpt":{"rendered":"

Eckel Noise Control Technologies created a new anechoic chamber for Microsoft that won the Guinness World Record for quietest room in the world. Microsoft contacted the company in March 2014 to build the chamber for audio and device testing at its Audio Lab in Redmond, Washington. <\/p>\n","protected":false},"author":5,"featured_media":11854,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1029],"tags":[1985,1983,1965,1984,55],"class_list":["post-11853","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-anechoic-chamber","tag-eckel-noise-control-technologies","tag-guinness-world-record","tag-microsoft","tag-sound","entry"],"acf":[],"yoast_head":"\nCheck out the acoustics behind the quietest place on the planet - The Construction Specifier<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.constructionspecifier.com\/microsoft-wins-world-record-bid-for-quietest-place-on-earth\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Check out the acoustics behind the quietest place on the planet - The Construction Specifier\" \/>\n<meta property=\"og:description\" content=\"Eckel Noise Control Technologies created a new anechoic chamber for Microsoft that won the Guinness World Record for quietest room in the world. 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