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I wonder how much people can hear it... I saw some people claiming you cannot hear it on the article comments and linking to youtube video, but I can... But I
by speeder 13y ago
I wonder how much people can hear it...
I saw some people claiming you cannot hear it on the article comments and linking to youtube video, but I can...
But I can hear other things as well, so I am not surprised (for example I absolutely hate being left alone with certain models of ultrasound machines, I dunno what they do, but when they are idling, I can hear them... When someone is actually using the ultrasound, then the sound stops...)
- paulgb 13y agoI didn't find the video, but this might be the cause of you hearing sounds that others don't: http://en.wikipedia.org/wiki/Presbycusis http://en.wikipedia.org/wiki/Presbycusis
- incision 13y agoI've had a similar experience with certain laptops - an electronic squealing sound that apparently only I can hear. As best I can tell, the sound comes from an inverter connected to the displays.
- stevekemp 13y agoDitto. Interestingly though now that I'm old (37) I can no longer hear bats, I certainly could when I was in my mid-twenties. So the squeal of some electronics is high-pitched, but not as high-pitched as bats.
- kryten 13y agoIt's usually one of two things: 1/ An electromagnetic/mechanical effect in the transformer in the inverter. You can usually stop it by carefully undoing the tape around the transformer and giving it a squeeze. 2/ The audio system is routed next to a bus somewhere and it is just plain old noise being pumped out of the speakers.
- fzzzy 13y agoI can hear them.