In the quietest room on earth, so quiet you can hear your own BONES grind – visitors can’t stand for more than an hour
WHILE you may have been contemplating the inner workings of your body, hearing every heartbeat can be overkill.
But hundreds of daredevils still flock to Microsoft’s anechoic chamber to listen to every grind, crunch, and squeak our skeletons make.
The remarkable room at the tech giant’s headquarters in Redmond, Washington certainly has everyone’s ears.
Crowned the quietest place on earth by Guinness World Records, it’s a place where you can hear every sound.
The anechoic chamber envelops those brave enough to enter with a “strange and unique feeling”.
Though useful for testing audio equipment and varying sounds, the room also leaves visitors with a severe dizzy spell.
People cannot stay in the chamber for more than an hour.
Some even jumped out of the eerily silent room within seconds.
In just a few minutes, the beat of your own heartbeat will be ringing in your ears, reports the New York Post.
This is soon followed by the freezing sound of your bones crunching, blood coursing through your body and the endless screaming of your organs ticking.
Hundraj Gopal, linguist and hearing scientist and lead designer of the anechoic chamber at Microsoft, told CNN that the absence of noise can feel “deafening.”
He said many visitors experienced ringing in their ears or a feeling of fullness – and could even hear their heads turning from side to side.
“As soon as you walk into the room, you immediately have a strange and unique feeling that’s hard to describe,” Gopal added.
That’s because the incredible chamber has an average background noise level of -20.35 dBA.
In comparison, normal human respiration measures at 10 dB, while the average human hearing threshold is 0 dB.
The lack of reverberation in the anechoic room removes all outside noise as well as your spatial awareness.
People often lose their balance in the space that took almost two years to design.
It consists of a whopping six layers of concrete and steel.
Below the room are a series of vibration-damping springs, while the floor is a grid of sound-absorbing suspended cables.
The ceiling and walls are covered with fiberglass wedges that break up sound waves before they have a chance to bounce back into the room.
Outside the chamber, the human ear is constantly exposed to a certain level of sound, which means that there is always some air pressure acting on the eardrums.
Gopal explained that in the room the air pressure is gone because there are no sound reflections from the surrounding walls.
Microsoft’s marvelous creation has become a niche tourist attraction, welcoming visitors from all over the world.
The company typically uses the chamber to test the audio from microphones, receivers, headphones, and speakers.
They tested Xbox consoles, the HoloLens VR glasses, and even Skype in the deafeningly quiet room.
https://www.the-sun.com/news/7305144/worlds-quietest-room-so-silent-hear-bones-grind/ In the quietest room on earth, so quiet you can hear your own BONES grind – visitors can’t stand for more than an hour