this post was submitted on 19 Jun 2026
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Autism
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Count your lucky stars you cannot hear LED's.
I can. My hearing is extremely sensitive.
I've gone through the effort to set up smart plugs for most of my devices, to turn off automatically, for no other reason than eliminating the buzz.
...wow, you just reminded me that i used to hear LEDs, too: i'd totally forgotten about that...anyway, i can vouch that commuting a couple of hours every day in a top-down roadster for twenty years makes the problem go away; heck, the tinnitus even drowns out a lot of electronic-feedback clicks and beeps which are supposed to be audible...
That is actually pretty interesting! Are you sure it is the LEDs that you can hear? I would probably lean towards the mains 50Hz buzz being heard by you due to internal transformers
It's without a doubt the LED's themselves. Moving closer to the exact location of the LED confirms it.
For some cheap products, I've physically cut one side of the LED pin to shut it up, and the buzzing stops.
Though technically it could be the sound of a capacitor charging/discharging or the resistors, not exactly sure on the exact mechanism, but it's at the very least something on the LED circuit.
Depends; I’m a lot older now and deaf (but have tinnitus, yay) in one ear, but I could hear the flyback whine of old TVs. I can hear the odd switching regulator still, but most these days are switching waaaaay above even the best human hearing range.
50/60Hz buzz should be fairly rare these days except for some high power cases or some really poorly designed electronics.