- Orfield Laboratories' 'anechoic chamber' in the U.S is 99.99% sound absorbent.
- Volunteers see hallucinations after a short while.
They say silence is golden – but there’s a room in the U.S that’s so quiet it becomes unbearable after a short time.The longest that anyone has survived in the ‘anechoic chamber’ at Orfield Laboratories in
South Minneapolis is just 45 minutes.
It’s 99.99 per cent sound absorbent and holds the Guinness World Record for the world’s quietest place, but stay there too long and you may start hallucinating.
It achieves its ultra-quietness by virtue of 3.3-foot-thick fiberglass acoustic wedges, double walls of insulated steel and foot-thick concrete.The company’s founder and president, Steven Orfield, told MailOnline: ‘We challenge people to sit in the chamber in the dark - one reporter stayed in there for 45 minutes.