As a musician I got obssesed with the tones of my tinnitus and last
morning I was doing all the worst and unwanted from us: to be in a
quiet room listening my tinnitus for a while and i noted all this
details, also i think i could be a good exercise to everybody and I´ll
tell you why later:

I have three tones in my right ear, that´s the one i suffer from
tinnitus mainly but in my left ear i have sometimes other tones that
maybe could be and sometimes the blood stream when i´m doing some
exercise for example.

Ok here´s the most interesting part:

I got the notes of the three tones and seems to be in this order from
lower to hight tones:

E , A# and F#

the E is a clear sound very low I can only hear when i´m concentrated
on it

the A# tone is the one that disturbs me more that the others cause it
have a hissing

and the F# is a very high hissing sound that mixes with that note that
it´s even higher than the last F# on a piano for example.

what i found interesting and that´s why i recommend doing this
exercise is that after trying it and cause i was still keeping the
tones on mind i turned on my PC and guess what?, all the tones are
generated by my computer!, the monitor makes the F# and the other tones
comes from inside the cpu, so i think my main problem is comming from
some type of stress mixed with an allergy that made me more sensitive
to what i hear and due to my congestion I can´t relax my ears
correctly from one sound to another...

what do you think, you should give a try.