I've had high-pitched tinnitus since my late 30's. It got really bothersome at times. It turned out I have lost some hearing in the same frequency as my tinnitus "appears" to be (since it's not a real noise, I'm not sure what verb to use). The loss is in the 4Khz and above range, mainly affecting my ability to distinguish multiple speakers and to clearly hear high-pitched female speakers.
The audiologist offered hearing aids as something that had helped some others in my situation. She was not pushy about it, and made no promises. After a couple of years of occasional use (in conversational settings and when listening to music) I can honestly say the aids have helped.
When I can clearly hear the high notes produced by birds, crickets, musical notes, high-pitched female voices etc, it seems to "drown out" the tinnitus. When I don't wear the aids, I can again hear the tinnitus, yet it is a psychological comfort to know that I can compensate for it any time I want.