Experience complete silence in an anechoic chamber, a room designed to absorb all sound reflections. Visit Orfield Laboratories in Minneapolis (holds a Guinness World Record for the quietest place on Earth at -24.9 dB(A)) or the anechoic chamber at Microsoft's Building 87 (known for testing audio equipment). The extreme silence can be disorienting, and visitors often hear their own heartbeat and internal bodily sounds.
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