My story so far...
I have a static hiss - like crickets or cicadas in a forest. In Australia we have areas of trees called "bush" or "bushland". And walking through that cicada bushland in summer is a pleasant enough sound except when there are so many cicadas it seems the very air is thick with the sound.
That's what I am hearing.
I measure the sound on a relative scale. From 0 to 5 - with 0 being none, to 5 being unable to move (and it is not a very good scale because if I ever feel at a 5, then...).
With the left side being louder I record daily the levels of both. Most times the sound is 3/1 or 4/1, with left always louder than the right.
And sometimes, rarely, the sound can go away and it becomes 1/0. with a "normal hear it but can cope with it" level of 1 on the left.
Sometimes I think I can do some exercise or yard work and it will go away.
At one point I went for 9 days as 1/0, only to be followed by 10 straight days of 4/1. But I cannot remember when those days were and even though I tracked it, I am worried if I really knew how long ago it was.
Now I am pushing myself to stay awake each night until I am so tired that I will immediately sleep, and finding no hope that I can sleep when I do wake up for whatever reason and no matter how short the sleep time. The noise literally keeps me awake. No drugs or magic potions for me though.
I wake until I sleep, and when I wake I can't sleep at all.
I have tried (maybe) a kind of meditation: imagining the same sound in my head as what I am hearing, and then if I get it just right, my tinnitus goes away. Like mixing two sounds together to cancel them. It's in my head, I think it works. But it is meditation (I don't call it that, but I guess so) and I can't do it during all my waking time (which is considerable - see above).
Sometimes when I lie awake at night I can hear the buzz of the electric clock next to me - not too far away, but far enough to consider my hearing a "superpower". How come? I don't get it.
Things don't sound to loud to me - people talking, traffic, city construction sounds are all tolerable. Sometimes, when I have amazing headaches, some voices will sound harsh and I feel it.
I have seen colored lights three times - ocular migrane it's called. I don't know if that is related.
I am in good health, and eat well enough I guess. I don't exercise as such but I do some yard work.