Hi! My tinnitus is a humming sound at 60-65 hz. Some sounds aggrivate it. Sometimes the tinnitus is low and sometimes it is gone. A couple of weeks ago I was exposed to a loud buzzing from a motor. Only for a few minutes. Soon after I as in a quiet room and I noticed that my tinnitus had reduced to a low hum. But also a new hum about 100 hz. The two sounds were fluctuaging fast. Later at night I noticed that the new sound stayid if there were really quiet. And it is still like that. It is most dominant when laying down. Anyone here have anything similar?