This Strange Room Holds a Quiet Secret

Inside the unassuming headquarters of Orfield Laboratories is a strange looking room with deafening silence. Called an anechoic chamber, the room held the Guinness World Record for quietest place in the world for nearly a decade.
3:39 | 03/19/16

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Transcript for This Strange Room Holds a Quiet Secret
Are trying to collect changer in conjunction with the very low noise microphone. We're able to resolve even very quiet sounds. Because there's an absence of background noise. One thing we might do Indiana collect chambers to measure the response. Of the system whether that be the frequency response of the kind response from in this case we can measure bullet that once. The machine like this. We're with the computer software like that. Rumor and leopard Perry called and panic or gamer and an echo chambers are used for standardized testing in her search. Please run the nation's only independent building performance consulting lab we work in all the areas humans and they have. Well we started out in different site in our interest where he sticks and lighting in the open plan office. And we are one of the first groups in the United States to start to measure. Those quantities and start to look at the perception Lee rather than in terms of engineering. The cynically chamber in particular has been known as one of the quietness in the world for last ten years. But makes it quiet is how you keep the outside noise from coming in. This and expect chambers this excited chamber floating on high beams and brings in a hit. In the name of the five sided over chamber over that there's a twelve inch concrete building around that. And we're in an area of Minneapolis. A lot of back problem. The of these alleges the room is if they can make while the huge amount is based contained in the alleges in behind it. Here paying cable clerk much more expensive but it allows fewer reflection. Because anomalies in the measurement. Wedges. And all sides absorb. Any reflections of sounds so in an addict by Cambridge the idea since no diffuse. Room effect. They're simply the sound from the store like my voice and nothing else. Inside the test chamber we have an an echo chamber and a sound source which in this case happens to be a head and torso simulator or hats. He's got a loud speaker and his microphone. And we're measuring that as a reference. With this referenced microphone. Loudspeaker. Is connected to the analyzer outside the chamber the microphone is connected to the analyzer outside the chamber. The analyzer plays the swept sound way that comes out of his mouth travels through time in hits the microphone and we measure the response to that. The touch of a button. But so. And it. And the benefit of the N echo chambers that. We have no reflection from room services. As anything that it's these walls will be absorbed it. We had many people in here who who have walked in the room. And walked right out of the room because they feel very claustrophobic. We've had reporters. Who couldn't make it for more than a minute sitting in the dark in this room. And we've had other people who thought it was incredibly comfortable a lot of it has to do of the claustrophobia the room with the fact that having no pressure and your ears. Feels like carriers are pressurized. And you feel disoriented the two principal tools of orientation are gone you can't hear anything you can't see anything. And you just have to be comfortable with the nothingness. In some people are comfortable if that some people are way too and respective to be comfortable.

This transcript has been automatically generated and may not be 100% accurate.

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