Eckel Industries

Eckel Industries is an acoustics noise control company founded 1952 in Cambridge, Massachusetts. The company engineers and constructs anechoic (echo-free) sound chambers.

Noteworthy Projects

 * Largest anechoic chamber ever constructed at General Electric in Pittsfield, Massachusetts
 * World's quietest room, located at Orfield Labs in Minneapolis, Minnesota. The Orfield Labs chamber was certified by the Guinness Book of World Records in 2005 as the quietest room on Earth.
 * The Eckel anechoic chamber located at Microsoft in Redmond, Washington was certified by the Guinness Book of World Records as the quietest place on earth in 2015, measuring -20.6 dB.