The ‘special audio lab’ at Microsoft’s headquarters in Washington, USA holds the Guinness World Record for being the quietest place on earth. The silence inside is -20.6 dBA.
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.
The ‘special audio lab’ at Microsoft’s headquarters in Washington, USA holds the Guinness World Record for being the quietest place on earth.
This means that once you’re inside the room, you can even hear your body organs work including the sound of your heart beating and your blood flowing.
The noise produced by air molecules colliding with each other at room temperature is about -24 decibels.
The limit of human hearing is 0 decibels. Although just because our ears cannot pick it up, it does not mean no sound present, hence it is possible to get a negative value.
The chamber sits at the heart of six concrete onion layers that help to block out sounds from the outside world. If a jet was taking off just outside the building, you would hear little more than a whisper inside the final concrete bunker where the chamber is.
Before this, the record was held by the Anechoic Test Chamber at Orfield Laboratories in Minneapolis, USA, the silence of which was measured at – 13dBA.
People who dared to stay in the Anechoic Test Chamber at Orfield Laboratories haven’t had a pleasant experience. The longest stay was just for 45 minutes.