What I have done in the past (which is a temporary solution) is play a matching frequency from a free phone app and make the volume repeatedly lower and higher

What I have done in the past (which is a temporary solution) is play a matching frequency from a free phone app and make the volume repeatedly lower and higher for a few minutes.. This cancels out the pitch in my ear for a while. Sometimes the tinnitus just stops by itself, and this can be for days. I am aware of some triggers for it.