3 ms·

Huh, the vimeo one is weird. I'd think we wouldn't be able to hear them talk, let alone move boxes (at around the 1:00 mark).

• SeanLuke 14y ago
  Of course you can hear sounds: but you can only hear direct sounds. All reflected sounds are gone. And that's actually a high percentage of the sounds you normally hear. An anechoic chamber is used to test acoustics in an environment with absolutely no reflection (reverb, echo, etc.).