Welp, I just realized I can't absolutely hear that frequency anymore; and I'm just 24 years old... :(,(reply>), I can't either and i'm 16,(reply>), same, but then again, from birth i must use hearing aids in both of my ears since my birth .my parents ofc didn't notice this until later because i was a normal baby and i could hear loud noises just fine and i could hear the voice from nearby but and react to it, but i wouldn't understand at all what that person is saying. if i go to local swimming place and at locker rooms i take my hearing aids off because they are weak, they are just fine in rain but not constant water that pool has or high temperatures that sauna has. but when i return to locker rooms and place the hearing aids and turn them on again, all of the sudden world starts screaming in my ear once again.,(reply>), I panicked so hard when I couldn’t hear it until I switched to better headphones and was greeted by a mild headache.,(reply>), I couldn't hear it unless I put the sound at max😢