My tinnitus is much worse in my left ear because of 40 years flying a prop plane with the left cockpit widow open...before we understood that it was bad for the ears.
Both ears seem to have the same frequency, about 6200Hz, according to this program. When I hit 6200 triangle tooth wave it goes silent. Totally silent! The frequency seems to vary over a very short time and over a range of 6000 to 6500.
I did find that when I started taking Xarelto (Blood thinner) the level in my right ear went to almost zero in the morning but by bedtime it is back up about 10%
When I used the program to find the frequency I was surprised to find that after finding it, the tinnitus was gone for several minutes, after just a few seconds of listening to the silence.