Part of the cochlear amplifier mechanism is cells which move in response to electrical signals so you can hook them to a sound system for a laugh: https://www.youtube.com/watch?v=UXgFae2r1s8
Tinnitus other people can hear has a name - objective tinnitus - and is a thing though less common than subjective tinnitus which they can't.
Vid on the cells making sounds https://youtu.be/b_3AngVJzp8?t=645
As an aside the explanations I've read of what the amplifier cells do seem wrong to me in that they say they make the sound louder. From an engineering point of view you'd imagine it would make more sense to provide negative feedback loop so the membrane doesn't move too much and overload the ion channel gate which must only have a useful movement range of a few nm.
Edit: I mean someone who specializes in hearing.
It may be dumb but I had things to manage like work and children in their teens, so tinnitus management had a low priority. Still, I look avidly at discussions about tinnitus. I tried the method of tapping on the neck, but it did not work for me. I tried hearing aids, but it didn't help either.
I have the same. So much so that I now rely on its intensity when I wake up to gauge how well I slept at night.
As they get louder, I can easily hear them over tinnitus. The cicada sound itself is interesting. Distant ones combine to make a sort of steady hum, almost a whistling noise. Ones that are close by make a distinctive sharp wavering buzzing noise. The sounds are distinctive and there doesn't seem to be any in between.