I noticed the other day that the hum that has been bothering me off and on for nearly a year was coming from the transformer/adapter for my MP3 player. I have a very hard time finding the source of these noises, but they drive me crazy; most electronic devices seem to generate some kind of quiet, high pitched hum to me; sometimes I get used to it. Other times (as with the adapter), it gets more and more irritating over time.
I had heard about this noise being used as a deterrent for keeping teens and youngsters from loitering in some places. I can tell you with certainty that it would keep me from spending any time there either, although the linked article definitely overstates its obnoxiousness (at least to my sensibility). I can imagine that it would get more and more irritating over time.
It's also kind of fun to be identified as "young people."
Created by Train Horn
Huzzah, I am still young. I notice the same problem with most electronics. The worst was when I was in high school and my parents got these little sonic emitters to drive away mice, I ended up constantly unplugging the one in my room (and plugging it back in when I left for school). I also have problems with some analog watches. I imagine the clerks think I am crazy when I start listening to several watches before I decide to buy one.
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