I am surprised no one has mentioned the use of classical music as a teenager repellent.
Malls and other areas also make use of the higher range hearing differential. Or, if memory serves, did try it in the UK. Played very high pitch noises that older ears could not detect younger ones could. Drove the little darlin's right away. That is until some human rights bunch got the knickers in a knot over it. Either that or my memory of the stories has gotten terribly mangled in my mind. On Mon, Feb 14, 2011 at 5:50 PM, Simon Varnam <[email protected]> wrote: > "Robert Dickow" <[email protected]> wrote: > > > > > > Speaking of 'audio' classroom tricks, I have recently heard about one > that I > > don't think I have caught my students doing yet, but it is intriguing: > > ......... Has anybody been able > > to confirm this? > > Have you heard of the opposite technique, developed as an ultrasonic > teenager repellent. Oldies don't even notice but youngsters feel the > pressure and move on. > Ouch! > > http://www.nytimes.com/2006/06/12/technology/12ring.html > > > Simon V > > > _______________________________________________ > post: [email protected] > unsubscribe or set options at > https://pegasus.memphis.edu/cgi-bin/mailman/options/horn/william.s.gross%40gmail.com > _______________________________________________ post: [email protected] unsubscribe or set options at https://pegasus.memphis.edu/cgi-bin/mailman/options/horn/archive%40jab.org
