As you probably know, as we age, our hearing deteriorates. It's often in the high frequencies that the loss is most noticeable. Apparently there was even a device developed in 2005 called the Mosquito that businesses could use to deter teenagers from loitering outside their businesses. This website has a recording of a frequency that supposedly people over the age of 25 can't hear. I'm a bit skeptical because I am well over that age and I have to assume that all the years of touring have damaged my hearing to some degree, but I had no problem hearing it. What about you?
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4 comments:
I can hear it and i'm also well beyond 25. I checked it through an analyzer and the main noise is at 15kHz.
any business using that could be losing a lot of potential customers
I can hear stuff up to about 16kHz. you might be interested in these hearing tests:
http://www.flashpresskits.com/hearingtest/
http://www.phys.unsw.edu.au/jw/hearing.html
I can hear it, and I'm well under 25. My younger brother can hear it. My nearly-50 dad can't, though, nor can my mother.
I have moderate tinnitus, but I could still hear it faintly. Still, my work was considering getting one, and I couldn't say no fast enough!
Edinburgh train station uses a similar device for pest control which emits a very high-pitched pulse every second or so, and I can't stand being in there for too long because the sound is so damn jarring to my ears.
26. And quite annoying.
Love the blog, by the by.
Jon-Michael
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