On Wed, 26 May 2010 03:29:19 +0000 (UTC), ShadowTek
wrote:

On 2010-05-25, Worn Out Retread wrote:
"ShadowTek" wrote in message
n...

Some people, like me, are sensitive to those frequencies. They cause my
ears to ring and hurt like hell.

I'd hate to be your neighbor if you were to put those damned things up.

You can hear Ultra sound?? That is supposed to be beyond the limits of human
hearing.

The full frequency range of what each person can hear varies slightly.


In Europe, I believe, they sell these things to specifically drive off
young people from loitering and causing a nuicance. It's based on the
general fact that adults lose most of the hearing sensetivity that
they had in their youth, so it's supposed to irritate kids while having
no effect on adults.

I thought that was called Beetoven.

I'm glad they don't do that here.


Either I'm just lucky, or I've been successful in my effors to protect
my hearing over the years by wearing earplugs religiously any time I use noisey
equipment.