I am successfully using the Acoustic Coordinated Reset Neuromodulation protocol to manage my tinnitus.
I have a fairly constant, mostly single frequency hiss in my left ear which I've had for several years, that suddenly appeared one day and never went away.
The technical paper on the technique is here.
The on-line generator I use to provide the required tones is here.
It seems to work quite well for me although I have to redo a few hour treatment every couple weeks or so.
I just listen to it using a earphone in my tinnitus ear, while I'm on the computer doing other things.
The trickiest part is matching the generated frequency to the tinnitus frequency during the initial setup.
It can take some experimenting until you get it right.
When correct, increasing the generated frequency should just sound like your tinnitus sound is increasing.
You shouldn't really hear a distinct separate tone.
The treatment doesn't work immediately for me (and sometimes seems to actually add some tinnitus noise right after treatment), but the next day the tinnitus is usually mostly gone.
It takes a certain motivation to do the treatment, but the annoyance of the tinnitus is sufficient for me.
