What online sites do you use?
It's an interesting approach to listen to *artificial* tinnitus noises to mask the actual tinnitus noise (or to cause a duration of residual inhibition).
I don't find the thought very comforting... I think Tinnitus Tamer (there's a thread about it on TT) works that way, quoting:
The Tinnitus Tamer uses repeating signals that are similar to the Tinnitus, interspersed with silent periods. The repeating signals are not associated with anything of significance, and will modify the neural networks that they will attenuate the Tinnitus sounds as representing a neutral, nonsignificant signal. The silent periods help the brain to perceive silence when there are no external sounds.
Rather I like to listen to pink/brown noise, but for me, the sound of rain/other nature sounds trumps everything. I fall asleep like a baby when listening to pouring rain.