Preview: Inside the world's quietest room - CBS News
Finding Minnesota: Orfield Laboratories - YouTube
Inside quietest place on earth where no one has lasted longer than 55 minutes
Overview | Orfield Laboratories Inc
I Can't Believe It - The sounds of silence. The anechoic chamber is located at Orfield Laboratory in Minneapolis, Minnesota and was designed for testing out hearing aid equipment. To make sure
The quietest room in the world is Minneapolis' unlikely tourist draw - Lonely Planet