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The Korean translation is generated by AI and may contain errors. Please use it as a guide.

Deep inside a big technology company in the United States, there is an amazing room. It is so quiet that nobody can hear anything from the outside. This special space is called an anechoic chamber. The room has thick walls made of steel and concrete and many foam wedges inside. These wedges catch every sound, even the smallest echo. The noise level in the room goes below zero decibels—so quiet that our ears cannot hear anything! 



If you enter this room, you can hear your own body in a strange way. People often say they hear their heartbeat, their breath, or even their stomach growling. Some visitors say it feels like their inside voice travels through the walls! It is almost impossible to stay inside for more than an hour. The silence can feel intense, and the mind can start making up sounds.  


Scientists and engineers use this room to test new devices like headphones or robot parts. They need perfect quiet to measure sounds carefully. Even though the experience can feel strange, this room helps us learn about sound—and our own bodies—more clearly.