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.
Oof. I hear cheap charging blocks, LEDs would suck
Charging is hit or miss for me, my USB-A > USB-C outlets are silent, but I can hear the buzz from USB-C > USB-C
Literally the only good thing about my hearing loss is I don’t have to deal with this sort of thing anymore. I used to be able to hear myself blink if the room was quiet enough. I used to get my hearing tested regularly to make sure my meds weren’t damaging it and I could hear both higher and significantly lower sounds than humans are supposed to hear. Now that one ear is basically shot they don’t care anymore about testing
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
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.
Man, I hated that sound. A lot of computer monitors had it too before they switched to LED/LCD displays.
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.
Encouragement to do a double blind test on this one; box up some LED's with a power strip, one on and one off, have the person who set them randomize which are on and then you guess which (neither, R, L, both). Repeat a few times.
I know similar experiences aren't predictive, the sound is a kind of synesthesia with the concept of running electronics (which is itself pretty cool/interesting!).
A double blind would mean no results are discovered lol.
A single blind test would be fine.
~~And yes, I've done this. I've turned away from a device, and my partner either toggled a switch powering thw device, or a switch which wasn't connected to anything.~~
Perfect accuracy.
Edit: I replied when i first woke up. I didn't read carefully.
Neat experiment idea but I don't have a tools for that lol.
If I ever do, I'll pin this message and reply to it :p
...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...