Quietest Room In The World Lets You Hear Your Bones Grinding, Blood Flowing

The Quietest Place in the World will not let you hear "nothing" even if you're several walls and mechanisms away from humanity – that is, if you're still alive.

Microsoft's anechoic chamber, which currently holds the Guinness Book of World Records as the quietest place on the planet, will let you hear the sound of your blood flowing and your bones grinding as your body moves, even if the rest of the world seems to stop.

An anechoic chamber is a room insulated from exterior sources of noise and designed to completely absorb reflections of sounds inside.

Based on the record, Microsoft's chamber gave an average background noise reading of -20.35 dBA (decibels A-weighted) after two "ultra-sensitive tests" in June 2015.

"Two tests were carried out by professional independent sound specialists and the test results were -20.6 dBA and -20.1 dBA – a considerably better figure than the creators' hope for -16 dBA," the Guinness Book of World Records reported in 2015.

Microsoft has compared the chamber to Brownian motion – the movement of particles in a gas or liquid. The Brownian motion stands at -23 dBA and is the quietest sound theorized by mathematicians.

Since the human body is made up of mostly liquid, people inside the chamber can hear all the mechanisms inside their bodies as the room tries to remove all the other outside noise.

Only very few people have been able to withstand being in the room for a long period, the New York Post reported.

"When you turn your head, you can even hear that motion. You can hear yourself breathing, and it sounds somewhat loud." Hundraj Gopal, the principal designer of the chamber at Microsoft, said, as quoted by the Post.

Another anechoic chamber, the previous world record title holder for the quietest place on earth before Microsoft's structure, sits in a neighborhood in Minnesota and is known as the second-quietest place on earth.

An earlier report by the Daily Mail claimed that the longest someone stayed inside the Orfield Laboratories in South Minneapolis was just 45 minutes.

"When it's quiet, ears will adapt," Steven Orfield, the owner of the chamber, said, as quoted by the outlet. "The quieter the room, the more things you hear. You'll hear your heart beating, sometimes you can hear your lungs, hear your stomach gurgling loudly."

"In the anechoic chamber, you become the sound," he quipped.