are you talking about the ringing in ones ear after a flashbang goes off or the day after a Metallica concert? research Tinnitus. it's not a disease but more of a condition. William Shatner has it. you may be able to find the "frequency of silence" from that. But yes silence is the absence of sound. to emulate it, go down to a local recording studio and sit in the booth that's padded from wall to wall, floor to ceiling with high quality, sound dampening foam. my high school had one. i couldn't …