The quietest room in the world is located at Microsoft headquarters. It is an echo-free room.
There, there are no noises from the outside world while on the contrary, all the sounds created in the room are clear and brief, such as the breath of the person in the room, his heartbeat, etc.
Creating this room cost over $ 1.5 million. Hundraj Gopal was the man who led the Microsoft team that created it.
To date, no one has been able to stand in the room for more than 45 minutes!