I’m curious, how many people are aware of these sounds. I have designed, etched, and built my own switching power supplies along with winding my own transformers. I am aware of the source of the noise. So, does anyone else hear these high frequency sounds regularly?
My father used to make fun of me for saying that I could hear the TV on even if it was muted, or that I could hear the furnace ‘scream’ before it came on.
One year, I got as a gift for Christmas, a handheld recorder and a fancy microphone from my stepfather a university music professor And that recorder could actually record the sound which he was able to show me on the computer.
That was like 25 years ago, I’ve been working with computers ever since, and now I am familiar with many many many devices that make high pitch whines.
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I have tinnitus and it sounds just like power supplies, except it comes from nowhere. So, when I hear the squeal, I turn my head. If the squeal noise follows the movement of my head, tinnitus. If it stays put, power supply!
It’s like skunk and pot! (I’m in Canada, it’s legal and everywhere.) If I smell it, I look around. If I see a burrow, skunk! If I see a dozy looking dude with red eyes…
I did as a kid, but my tinnitus covers it up now.
Coil whine ? Yup. They told me it would go away as I got older and lost range of hearing. Still waiting for that.
Edit: typo
Yes, often. It doesn’t really bother me that much, plus tinnitus generally overwhelms those sounds.
My favorite is when the ringing from power resonates with the tinnitus and ends up with an oscillating tone. Drives me absolutely insane.
I play electric guitar a foot from my computer. I hear all kind of noises through my amplifier. Scolling with my wired mouse makes a noise through it. I also know my phone is goimg to ring before it does because the cell,signal makes a noise through mu computer speakers.
Yes. I can hear to about 18kHz, so cheap USB chargers are no longer allowed in my house…
Worse, the EV chargers I used to work with had PEMs switching at 10kHz for the US UL variants. EVERYONE could hear those!!
Test your hearing range with this if you want…
https://www.szynalski.com/tone-generator/
I used the 10kHz tone to annoy the eng dept in the office till they changed the PEM switching freq to 20kHz…
I’m sorry but you’re not generating true 10 Hz tones with speakers that are unable to reproduce such sound
Hell most premium speakers go down to 15-20 Hz at best
They said 10 khz not 10 hz
Only two orders of magnitude, can you really blame them?
Isn’t it 3? 10 -> 100 -> 1.000 -> 10.000
Whoops
It’s especially common among people with Autism/ASD and ADHD to hear noises other people often don’t hear. Like those LED light bars, or coffee pot crackling, or electricity from appliances. For ADHD I’ve seen a few people claim that those sounds are just as audible for everyone else, but everybody just subconsciously filters it out and doesn’t notice it, while people with ADHD are easily caught by it. I assume for ASD it would be somewhat similar – plus Autistic people are a lot more susceptible to sensory issues, although people with ADHD also often have fucked up senses, which can make noises like that a LOT more noticeable (and even problematic/headache-inducing/stressful/painful).
ADHD really seems like a superpower
This is an extremely common line that neurotypical people use to minimize the struggles that people with ADHD face on a daily basis. Pretty much every person with ADHD has heard the “well it sounds like you’re great at multitasking so it’s like a superpower” line. In reality, people with ADHD aren’t any better at multitasking; They’re just constantly forced into it because of their inability to focus on a single boring task at a time.
ADHD attention is directed by four main things: Interest, Novelty, Challenge, and Urgency.
If you find a task interesting, it’s all you’ll focus on. The person will struggle to focus on homework, but can focus on video games for hours. Even putting off basic needs like eating, sleeping, or using the restroom. A person with ADHD can literally focus on an interesting task so hard that they forget to feel hungry. This phenomenon is colloquially known as hyperfocus, and leads to a lot of common ADHD complaints (like how they’re always late, because they get hyperfocused on a task and completely lose track of the time.)
But if it’s not interesting, it needs to be novel. It needs to be something new. Pretty much every person with ADHD has a mountain of discarded hobbies, because the new hobby caught their attention while it was novel. But as soon as the novelty wore off, their interest waned. Because they weren’t really interested in the hobby; They were simply enjoying the novelty.
If it’s not interesting or novel, it needs to be challenging. People with ADHD will excel at big difficult projects at work, but struggle to complete the mundane day-to-day tasks. Because with neurotypical people, the brain will release a small amount of dopamine as a reward when they complete small tasks. It’s the brain’s way of saying “hey we did a good thing, so I’ll reward myself and be able to focus on it again next time!” But people with ADHD don’t get those small dopamine rewards. People with ADHD only get dopamine rewards for completing big difficult tasks. So they’re able to focus on those big difficult tasks, because they know it’ll lead to a big dopamine payoff in the end.
Lastly, there’s urgency. If a task isn’t interesting, novel, or challenging, it needs to be urgent. This is basically the “fight or flight” response being focused into a task. People with ADHD are expert procrastinators. Not because they enjoy procrastination or rushing at the end, but because the task isn’t interesting, novel, or challenging. So they need it to be urgent in order to be able to focus on it. This is basically just replacing dopamine with adrenaline.
But if it doesn’t fit any of the above four criteria, it’s basically impossible for a person with ADHD to focus on it. Even when they know they need to, or want to be able to. Instead, they’ll end up getting distracted by the fucking power supply whistling.
I did not have the brain power to reply so thank you for doing it for me and all of those of us who find it too “normal” to try to answer this for the like 20th time.
“Seems” being the key word. Oh sure, we have our moments. I once finished a 20 page paper overnight. I also procrastinated on it for a month. Nah, for the 5% this “superpower” works, we get to deal with the 95% struggle trying to get our brain to listen to our brain.
And don’t get me started on self-help articles and videos. You’ll find very few of those that talk about “Get better sleep!” and also mention adhd. All neurotypical. …which might be a good Youtube channel come to think of it. Taking all the advice and adjusting it to maybe help people with adhd.
Where can I get what you are having?
Good ears? the question is when, not where, and the answer is half a lifetime ago.
How do you consume those ears and what do I have to look out for if I want some product that you could consider good
Seriously, stop being an asshole. Coil whine is a well-documented behaviour that creates a loud, high pitched noise.
As coil whine is at the very limit of what human hearing can accomplish, it doesn’t take much until you’re unable to hear it. So you’re likely too old or went to too many concerts to be able to hear it.
How many concerts to I need to visit to fix this issue?
Even half an hour next to the PA without special ear plugs is enough to permanently harm your hearing.
