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this post was submitted on 26 Aug 2024
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Science Memes
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I'm in my 40s and still can hear that frequency just fine. Probably not as loud.
One of my least favorite types of thing are those "teenager repellent" devices.
Also certain induction cooktops.
Also the "kid repeller" devices (because yes, it also includes younger people such as infants, and also older people), is that it just makes the world a hostile place for young people, and then later people turn around and complain how "nobody goes outside anymore"
In addition, this severely affects animals too
We don't have a range, and I use portable 110v induction cookers. I love them so much, but I must have music or YouTube or something playing while cooking, or I want to stab a fork into my own ears
I don't think that there's any fundamental reason that an induction cooker needs to be doing anything around 20kHz. I'd guess that it's just the power supply happening to be flipping power on and off at that frequency.
You could probably just get a different cooker.
I've got two, I've had 3 in the past. They all do it. I have no idea what the frequency is other than "painful and barely audible"
They put those “teenager repellent” devices in malls. And what do you know, malls are dying.
My favorite use of those was teenagers using that as their ringtone so the teachers couldn't hear it.
Some kids at my high school tried that on their phones, but it never worked because all the other kids in the room would cuss them out for basically inflicting the entire room with mosquito-in-ear noises.
Which induction cooktops?
I wish I knew. It was in the cafeterias at work, and I would be the only person in a room of a hundred who was standing there plugging my ears and cringing from the pain.
I love those things lol. I'm your age and can't hear shit above 13 KHz.