Re: [MLUG - DISCUSSION] Teen Repellent

["Jonathan King" <EMAIL:PROTECTED>]

On 6/6/06, Jerry Gamblin <EMAIL:PROTECTED> wrote:
> You might have seen this on the news but the high-pitched sound
> emitted by this mp3, was designed by Merthyr Tydfil-based inventor
> Howard Stapleton. Inventor Howard Stapleton, creator of the Mosquito
> teen repellent, says only a few people over age of 30 can hear the
> Mosquito's sound.
>
> http://www.jerryandmissy.com/mp3/teenbuzz.mp3

Thanks a heap.  That's just what I needed to hear this morning.
Meanwhile, I have a feeling this is the lower-pitched knock-off
version of the original, since I'm pretty sure I wouldn't have hearing
anymore in the original "teen repellent" range, but this is loud and
obnoxious.  OK, so if this is the source:

http://optimist.geekisp.com/samwise/does-teenbuzz-exist/

Then it's only a 14 KHz tone.  You want well over 20 KHz for this kind
of thing to show good age discrimination, and *man* would that be
completely obnoxious.  It also wouldn't reproduce that well in most of
the speakers people are playing it on, and wouldn't be a useful
ringtone.  I'd do harmonic analysis on this one if I had time, but I
don't today.

jking

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