And here I was thinking the high pitch ring from old CRT tvs/monitors was common knowledge.. After all, it wasn't all that long ago that they, crt screens, were around and I daily use Indeed, some still have a crt around, in daily use. Such as  old school computer museums. If you had that many responses to the video about the high pitched ring. One can only imagine the complaints the curator of that museum receives.. Hold up, I'll turn the monitors off for you. Hehe