I have moderate tinnitus that comes and goes. I have not been able to determine if wind noise from riding has any effect. Some days it seems worse after riding, some days better and some days no change. I started wearing Cat Ears earlier this year when I realized that wind noise can get pretty loud, and I want to preserve my hearing as best as I can. So what if I look like an Elvis impersonator when I wear them? They do cut down the noise level, but I do have to fiddle with them a bit to get them positioned correctly.
The one product I might try are "concert ear plugs." They are designed to reduce noise levels equally across all frequencies to avoid hearing damage at music concerts, yet allow you to hear the music. I wonder if they might reduce wind noise on the bike while still allowing you to hear traffic?