The cicada reference is a great one…same here, maybe mixed in with some tea kettles. Sucks.
Sounds weird, but relatively large doses of vitamin E seem to help me quite a bit. I take one 400 IU (180mg) dose in the morning, and another in the late afternoon. When I first started taking it I didn’t think it was working, so I stopped after a couple months, but within a couple days of stopping I noticed the ringing was back, and it seemed much, much louder….reality was that it had gotten better, but the improvement was so gradual, I just didn’t notice.
Still on that regimen now, and it doesn’t make the tinnitus go away, but it is a lot better.