raise you hand if you can still hear 40Khz

[Lew Zealand]

I have permanent hearing loss from when I was a kid, about 95% gone in one ear and the top end above about 15KHz in the other. So I at least have one good one to work with and just barely enough that I have some 3D hearing perception in a clean acoustical environment. In a noisy environment? Yeah, pretty useless.

With all missing above 15K, I always wondered if my/any speakers were actually reproducing it but I brought a test CD to a friend's house when setting up his speakers and played the inaudible (to me) sound without describing it, and he heard and described it easily. Lucky bastard.