yes and is called biofeedback and the masking devices do that job too
but all depends on the type of tinnitus you have too. it´s kind of
luck to find the best way you can control your tinnitus on some people
it´s useless to mask the sound, and on others it works at least to me
it didn´t worked at all.

I'm having just the opposite experience.  I've found that for brief moments
after playing a sound that's as close to my tinnitus, it goes away.