I’ve been working as producer with many healing frequencies since 2010, my ear is used to that as i used them for healing purposes in my dj sessions as well…if you want to dig down that rabbit hole all you need to do is find out what are the 9 basic solfeggio healing frequencies starting starting 174…use for yourself in one session or few and get used to the sounds…you will notice that the ringing in ears is almost same …pure sounds ..here is one example , read description and download for free