I get a ringing in one ear sometimes usually at night. Anyways in not sure it's real cuz if I put my hand over my ear it's gone but if I don't it goes on for about a minute or 2. If uve ever seen windtalkers the movie when Nicholas cages character has a grenade go off by his ear, that ringing he heard I the same ringing I hear. It's usually only one ear but it's not always the same. But I hear other things I don't think are real cuz when I look for te source none is found.