Inside the World’s Quietest Room

Microsoft’s Anechoic Chamber

Located in Washington, this room has recorded a background noise level of -20.3 decibels—lower than human hearing.

Feels Unnatural to Most

People report feeling dizzy, anxious, or overwhelmed due to the extreme silence inside the chamber.

You Can Hear Your Own Body

In this room, you can hear your heartbeat, bones moving, or blood flowing—sounds usually masked by background noise.

Used for Product Testing

Microsoft uses it to test the sounds of devices like keyboards, speakers, and microphones in a zero-noise environment.

Engineered for Silence

The room’s thick, sound-absorbing fiberglass wedges and vibration-isolated floor help eliminate echoes and noise.

No One Lasts Long Inside

The longest anyone has stayed inside is just over an hour. Most people find it psychologically disturbing.

Holds a Guinness Record

Officially recognized as the quietest place on Earth, it beats previous records held by other anechoic chambers globally.