'Ultrasonic' ringtones - ouch on my hearing

[Tonks]

--- In HPFGU-OTChatter at yahoogroups.com, "Dina Lerret" <bunniqula at ...> 
wrote:
>
> I remember their being some news segment about kids using high-pitched
> ringtones to avoid adults hearing their cellphones.
> 
> http://www.ultrasonic-ringtones.com/
> 
> Gah!  Hurts my ears!  The 17.7kHz is the last one that makes me 
cringe because I can barely make out 18.8 on my PC speakers... Heh, 
certainly worked on the bugs because a huge breeder (i.e. winged) 
carpenter ant dropped within inches of the PC speaker... sonofabitch! 
{whack}  Dead now.
> As to my age, twenty-eight, so I've retained a good percentage of my 
hearing... until those tests. ;-)  Eyesight is another matter.
> 

Tonk:

Good God!!!  As if I were not depressed enough about turning 59 in a 
couple of weeks. (Yes Harry and I have somethink in common.) I could 
only hear the 8k one. But I felt really weird trying the others. I 
think it has some effect on my brain..  probably killed off some cells 
or something.

What is this about some divice that keeps teens from gathering? I don't 
think this stuff is safe.. I mean if it kills bugs...  Can it trigger a 
stroke or heart attacks in the old folks??  I guess I let you know in 
the AM, if I am still here...

Tonks_op