High Frequency/Pitch in My Head

I have read a post by a similar individual. About two weeks ago, I am getting a very difficult to describe high frequency pitch in my head. It's not tinnitus or anything of the sort. Nor is their anything wrong with my hearing and I have no problems with balance or dizziness or anything of the sort. It is the same thing, but it reminds me a bit of when the TV comes on and says 'this is the emergency broadcast station, this is a test'. It isn't the same thing but rather sounds like the noise you would hear on a quiet evening outside, like crickets but one constant pitch.

It will stop occassionally, but has been more persistent as the days have come by. It is there when I am in my house, car, outside, anywhere. It isn't painful, but somewhat cumbersome.

Any thoughts are appreciated. Thank you.