I have a constant tone tinnitus which is a loud hissing in my left ear. When it gets very intense however it sounds very much like crickets/cicadas. I notice that a lot of people describe the same. However I have become aware that the reason mine sounds like that is because it is fluctuating exactly in time with my pulse - otherwise I don't think it would sound like cicadas! I am wondering if other cicada sufferers have also noticed that it seems to correspond to their pulse? I really don't think I have pulsatile tinnitus per se as most of the time it is just a hiss.