While tinnitus ringing isn't a result of vibrations activating the hair cells in the cochlea, the hair cells are still the reason the ringing occurs. If I recall correctly, it is still possible to exhaust these ringing-inducing hair cells to gain temporary relief. I wonder if you could somehow mask in a constant ringing that would exhaust these specific hair cells at some frequency for extended relief?

Has there been research on this?

Even if the cause of tinnitus is neural, or damage to the inner ear, perhaps it could be altered with bone conduction speakers? On the premise that any change to status quo might cause the neurons to completely re-evaluate their duties...

These two ([1] [2]; 2002 and 2020) say that bone-conducting and air-conducting transducers offer the same relief.

Since everyone, including this [3] seems to bury the results, I'm guessing that sound therapy isn't very effective.

[1] https://e-asr.org/upload/pdf/asr-200012.pdf (interestingly, this is Korean with English headings and captions. Is that common?)

[2] https://www.tandfonline.com/doi/abs/10.3109/1499202020907718...

[3] https://journals.sagepub.com/doi/pdf/10.1177/204062232095642...

All I know is that there are some sounds that help my tinnitus and other sounds that trigger it. If I could have something that filters the triggering frequencies and also sends out the masking frequencies, maybe it would help? I don't know.