I am really sensitive to high pitch noise for some reason. I go around the house unplugging wall watt powers supply's because of their coil whine. My family thinks I am crazy though.,(reply>), Oh gosh, Robert I know the feels, I can SEE the flicker on 60hz or lower on most CRTs, I always got headaches/mild discomfort from them. Didn't even consider the sound until this video. It made me realize part of the discomfort I feel is from the sound. It's amazing the difference between 60 and 85 or even 75hz.,(reply>), 32 cant hear it either.,(reply>), I have tinnitus too, I only notice it when it's really quiet. It's like a CRT TV is on in the room next to mine. I wonder how many people have this. I've always been very protective of my ears. I can't hear the morse code from the video, but I'm 33 so that's normal I suppose.,(reply>), I am the same way but with light. Things with a low refresh rate bug me excessively.,(reply>), I worked in a lab last year making lenses for eyeglasses.  if you sprayed an air hose into one of the machines, it'd make a whistle... that only myself and one other person in a store of over a dozen people could hear.  everyone else in the lab thought I was just making things up to complain about until then.<br><br>I hear above the norm and, most unfortunately, below as well.  those people with the monstrous levels of bass in their cars I hear about 50-100 get before anyone else, usually by an ineffable internal discomfort and/or my anxiety shooting to 12/10.  happens with the bass player in church, too.  certain notes if they start being repeated too much I have to leave services.<br><br>on the bright side I can hear and recognize music in incredibly noisy areas like restaurants more easily than most people I guess