Anonymous ID: b16ad1 Dec. 15, 2018, 3:06 p.m. No.4326533   ๐Ÿ—„๏ธ.is ๐Ÿ”—kun   >>6599

>>4326135

>>4326303

It's a sound chamber Air Force Research Laboratoryโ€™s Battlespace Acoustics Branch, located at Wright-Patterson Air Force Base in Dayton, Ohio. It is designed to create near absolute silence so the Military can test the sound of vehicles, planes, and imagine any other thing that comes into their heads.

 

https://www.wired.com/story/air-force-anechoic-chamber-acoustic-study/