this post was submitted on 16 Jun 2024
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This only happens with TVs or very low quality monitors. The flyback transformer vibrates at a frequency of ~15.7k Hz which is audible to the human ear. However, most PC CRT monitors have a flyback transformer that vibrates at ~32k Hz, which is beyond the human hearing range. So if you are hearing the high frequency noise some CRTs make, it is most likely not coming from a PC monitor.
Its a sound thats a part of the experience, and your brain tunes it out pretty quickly after repeated exposure to it. If the TV is playing sound such as game audio or music it becomes almost undetectable. Unless there is a problem with the flyback transformer circuit, which causes the volume to be higher than its supposed to be.
There is not one crt I ever encountered that I couldn't hear. So I'm having trouble believing you information.
I could time it out most of the time, but it was always there.
I could hear them too, when I was younger. I lost that frequency range of my hearing in my mid-to-late 20's, which I've read is normal.
Me too. And like the other guy, all of them, unless I’ve only encountered shit CRTs.
I’ve also stopped hearing it in my mid 20s when I’ve no longer seen a CRT monitor anywhere. If I’ve lost that frequency I don’t know.