I have had something similar since the age of 21. Unfortunately, it started off one time that I took some LSD to have fun with friends. And I started complaining that sounds sounded differently, "stereophonically", and that they were very loud and "penetrated" my head for some seconds and then went away. My friends laughed at me.
Unfortunately, this stayed with me since then. There are times that the slightest noise might come inside my head, drive me crazy for a second or two and then go away. It is not a very annoying sensation anymore, I have learned to control it most of the times, but when I am tired or irritated that can become scary.
Thing is, in my case I attribute this to the use of recreational drugs.