this post was submitted on 09 Apr 2025
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I used to be able to tell if a TV was on or not. I can't really explain it, but it was like I could vaguely hear/feel it? I don't know, I was a kid. My grandma would play her games without sound sometimes so she wouldn't wake people up (and probably to play without a kid hanging off of her), but I evolved to counter it. ๐
CRT TV's emit a high frequency noise while in operation. Apparently there must be a significant number of people who can't hear frequencies that high. My wife can't hear it and had no idea those TV's made any noise at all.
Aww, it's not magic, just science (Thank you for the info! Very interesting!)
I remember I was able to hear them as a kid. It's been a while since I've interacted with one, so who knows if it's even likely that i still have that acuteness of hearing, but I do remember it. Some good amount of years ago I found a crt monitor and turned it on and the dimming and slightly-static clicking sounds sent me back
I can tell when the batteries on my cordless mouse have died. There's a strange feeling of resistance when the mouse is active, but when it's dead, nothing.
I had this too! I think my high frequency hearing is just really good.
I recently was at a wedding and only the little kids and myself (in my 30s) were really annoyed by this device the venue had which used high frequency beeps to scare away rodents and things.
I had this too!
Gramer grandma.