'Quietest place on Earth' anechoic chamber


Utterly fascinating, check this out. Negative decibels. 

" This room in south Minneapolis, is so quiet that it measures negative 13 decibels. So quiet that Guinness World Records called it “the quietest place on Earth.” So quiet that film crews, acoustics nerds and curious kids journey here just to sit inside it. " 
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I'm not sure that dead a room would sound good for reproduced sound. I know we deal with all kinds of issues involving reflections, room modes, etc. but overdamped rooms sound and feel claustrophobic to me.
I once went into an anechoic chamber designed to test people with hearing aids. It was very un-nerving. I couldn't stand it.
I don't think so but Edgar Allen Poe wrote that it was impossible to hear anyone in one.