An Anechoic Chamber: The Quietest Place On Earth
Because of the lack of echoes and white noise, many people feel claustrophobic inside anechoic chambers. After a while, visitors can also feel unbalanced or dizzy while walking, as there are no sound cues to help them orient themselves. The background noise inside the chamber at Orfield Laboratories in Minnesota is measured in negative decibels (-9.4 dBA, to be exact).
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Key Facts In This Video
The foam wedges inside an anechoic chamber cause low-frequency sounds to bounce until they dissipate. (0:48)
People have reported claustrophobia, disorientation, dizziness, nausea, and even aural hallucinations inside anechoic chambers. (3:06)
See if you can hear the sounds of Veritasium's heartbeat in an anechoic chamber: (4:54)