there's a fair number of us who grew up with CRTs who just tune it completely out, even if we CAN still hear it.  It was a normal thing at the time, and we were used to it.  on the flip side, when I was 6 (in 1984), I was in a bank with my mother, and the ancient CCTV screen above the front door whined so loud, I've since had constant tinnitus, so I can certainly understand the uninitiateds' annoyance at it being piped through YouTube, even by accident.