Hey guys, what is that ringing sound we hear in our head? I read in a taoist book that if we concentrate on it, it can finally be silenced and we will hear true silence where every sound will be clear but it won't bother through its clarity in the sense of annoyance but it will be beautiful. I tried it for 6 months.(focused on it all the time, through my activities) And It seems like I always had a rush on me due to why I heard the ringing sound. Its kinda like it is fog, because of why we can't hear silence b/c we are always in our own world. Is there any scientific data on this? Does anybody have their own opinion?