In the year 2015, the Microsoft built a room that entered the Guinness Book – The Book of Records. For what reason? Because it's the quietest place in the world planet Earth.
Known as the anechoic chamber, it is located at the company's headquarters in Redmond, Washington. “Ultra sensitive” tests were carried out in the bedroom, still in 2015, where it was recorded that the background noise in the room measured -20.35 decibels.
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The room is so silent that very few people managed to stay more than a few moments in the room, and the record for staying there, until today, is 1 hour. That's because after a few minutes, you can already hear your own heartbeat.
After that time, you can hear the bones creaking and moving as you move, and after that you can even hear your own blood rushing through your veins!
The idea of these silent chambers is not to enjoy the silence itself, but to be able to hear the virtually endless noises that your own body produces. The body is completely silent only after passing away.
Environments that we associate with silence are still typically noisier than the threshold of human hearing, which is approximately 0 decibels. For example, a library, normally seen as a very quiet place, has sounds around 40 decibels.
Without any kind of noise from the outside world, the deepest silence gradually turns into an unbearable ringing in the ears. With this hum, the person is likely to lose balance, as the room has no sound reverberation, which impairs spatial awareness.
The word anechoic means “no echo” and this Microsoft camera took two years to design completed, made of six layers of concrete and steel, located a little way from the building next to it. around. Additionally, the floor, ceiling and walls are fitted with fiberglass, so sound is broken before it even has a chance to reverberate through the room.
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