I am one of those people who can hear a CRT television from a room or two over. Comes across as a very distinctive high pitched squeal. I always assumed that other people couldn't hear it simply because it was too high.
It actually seemed worse when my LCD TV broke last year and I pulled out my old CRT to watch a movie in the meantime. I don't know if I had just grown unaccustomed to hearing it or what, but it was annoying me even through the sounds of the movie.
Whoa, I had to reread your comment twice to understand it properly. In the context of RSA, and particularly speaking about its weaknesses, for me "CRT" automatically stands for "Chinese Remainder Theorem"… :-D.
If that interest someone, look for the BellCoRe attack on CRT-RSA [1,2]. I'm also working on the countermeasure as part of my PhD [3,4], and it's quite some fun!
It actually seemed worse when my LCD TV broke last year and I pulled out my old CRT to watch a movie in the meantime. I don't know if I had just grown unaccustomed to hearing it or what, but it was annoying me even through the sounds of the movie.