My tinnitus was there pre op in a nighttime buzzing form. Immdediately post op, I developed a new louder T; hissing/jingling, sound induced tinnitus. The louder the noise, music, or voice, the worse my tinnitus. I've accepted it and the "thing" I will have to live with. I learned to ignore the tinnitus and it is manageable most of the time. To avoid exposure I use ear an plug when I am around loud speakers, tools, and motors such as lawn mowers. The annoyance and jangled nerves settle down after I have a rest in a quiet place. On days when I have too much caffeine the T seems worse.
From my reading I have learned this...Tinnitus stays and the more we pay attention to it , the worse it seems. We aren't crazy, we have a problem that medical science has not found a cure for. Apparently tinnitus is a remembered response to sound and it is inside the brain. It is common to many people with normal good hearing in both ears. So we are not alone.
If you google tinnitus you'd find all sorts of "cures".
Perhaps your tinnitus will settle for you or you will settle for it.