It's funny, people saying that not being able to hear it is age related, yet I grew up with CRT displays and don't recall that noise at all.<br><br>I'm also dubious about the claims made for it since I did a few tests with youtube videos at some point and concluded they filter out frequencies much over 15 khz. (those same tests demonstrated I could in fact hear higher frequencies than that from a proper uncompressed audio source...)<br><br>Makes you wonder why some people hear it as something really obvious, and others don't notice it at all, even though hearing test results suggest they should still be able to...