Life Changing Info!

Are you searching for peace?

Imagine a place so peaceful that you can hear nothing except the subtle melodies of life - the rhythmic beating of the heart, the soft inhales and exhales of breath, the gentle flow of circulation, the digestion's subtle gurgles, and the delicate creaks of joint movements ; 

and if you could hear them with undeniable clarity. 

Even the rustle of clothing sounds like a mighty roar of the ocean. This chamber, crafted through the advancement of modern technology, is a place where our bodies produce their own symphonies, a masterpiece of sound and silence.

One might assume that the quietest place on earth would be found in a desert or deep within a forest or in the deepest corner of the ocean. 

However, the truest form of quietness - a deafening stillness that makes one hear the thunderous thump of their heartbeat - requires more than what nature can offer. 

So, what is the recipe for such a chamber? 

Firstly, we need to construct six layers of concrete and steel, all resting on damping springs in the floor to eradicate nearby vibrations. 

Secondly, position the fiberglass wedges on the walls and ceiling in a purposeful geometry that traps sound waves and dissipates them. 

Thirdly, design the chamber in such a way that it measures -20.35 decibels, a negative value that indicates sound pressure below the threshold for human hearing.

To provide a basis for comparison, 

the sound of breathing is 10 decibels, 

 the sound of air molecules colliding in a gas or liquid (aka Brownian motion) is -23 decibels. 

A rock concert, on the other hand, may reach up to 120 decibels. 

Few more examples of interesting sounds:

1. A whisper - 30 decibels
2. Normal conversation - 60 decibels
3. Traffic noise ( busy road) - 85 decibels
4. A chainsaw - 110 decibels
5. A gunshot - 140 decibels
6. Sound of a rocket launch - 180 decibels

Loudest sound ever recorded (Eruption of Krakatoa volcano in 1883) - 190 decibels

It's truly remarkable to think that this chamber can reduce sound to a negative decibel value.

One might wonder who would create such a chamber, where it would be located, and why would anyone make it. 

It's not surprising to imagine that one of the world's largest tech companies would host the ultimate quiet room. 

Within Building 87 of Microsoft's Redmond, Washington, campus lies an anechoic (meaning "free from echo") chamber, specifically designed to eliminate all external noise. 

It serves as a vital component in testing the amount of ambient noise emitted by the tech devices.

Few more sounds for your imagination

1. Hum of Hummingbird 10-20 decibels
2. Rustling leaves - 20 decibels
3. A purring cat - 20 decibels
4. A mosquito buzzing - 40 decibels
5. A flute - 60 decibels
6. A car passing by - 70 decibels
7. A vacuum cleaner - 75 decibels

1. A telephone ringing - 80 decibels
2. Sound of a waterfall - 80 decibels.
3. A barking dog - 80 decibels
4. A blender - 85 decibels
5. A hairdryer - 85 decibels
6. A human sneeze - 90 decibels
7. A bass guitar - 90 decibels

1. A motorcycle - 95 decibels
2. A church bell - 100 decibels
3. A baby crying - 110 decibels
4. A car horn - 110 decibels
5. A train whistle - 110 decibels
6. A power drill - 110 decibels
7. A lion's roar - 114 decibels

1. A police siren - 120 decibels
2. Thunder - 120 decibels
3. A scream - 120 decibels
4. A jackhammer - 130 decibels
5. A firecracker - 140 decibels
6. A plane taking off - 140 decibels
7. A jet engine - 150 decibels

More about the Microsoft's chamber

The anechoic chamber at Building 87 is one of the quietest places on earth, with a background noise level of -20.6 dBA. The chamber was designed and built by Eckel Industries, a company that specializes in building anechoic chambers. The chamber was completed in 1982 and has been in operation ever since.

The chamber is made up of a room within a room, with the outer room serving as a soundproof enclosure to keep out external noise. The chamber is designed to absorb as much sound as possible, with wedge-shaped foam tiles covering the walls, ceiling, and floor.

The chamber is also isolated from external vibrations using vibration isolation pads and air mounts. The chamber has a temperature-controlled environment to ensure consistent testing conditions.

The chamber is used for testing a variety of electronic devices, including laptops, cell phones, and other consumer electronics. The chamber is also used for testing the sound quality of devices and measuring their acoustic performance.

The chamber can simulate different environmental conditions, such as altitude and temperature, to test the durability and reliability of devices. The chamber can also be used to test the electromagnetic interference (EMI) and radio frequency interference (RFI) of devices.

The chamber is so quiet that it can be disorienting to spend time in it, with some people reporting feelings of dizziness or nausea. The chamber is large enough to accommodate a full-size car, which can be driven into the chamber for testing.

The chamber is equipped with a turntable that can rotate the car 360 degrees to measure its acoustic performance from all angles.

The chamber has been featured in several TV shows and documentaries, including "Mythbusters" and "How It's Made."

The chamber has also been used for academic research, including studies on the effects of noise exposure on hearing and cognitive function.

The chamber is not open to the public, and access is strictly controlled for security reasons.

The chamber is located in Building 87, which houses Microsoft's hardware development facilities. Building 87 is one of the largest buildings on the Redmond campus, spanning 755,000 square feet.