one of these was installed in my city centre where teenagers used to loiter. It put an end to the "problem"

http://www.trainhorns.net/sound/

Can't hear it and Im a healthy 16 year old



(Yes the sound is on on my PC)

Couldn't hear it either

yh doesn't work for all. I can hear it and it's killin me

Tis doing what it has been designed to do then

Same here lol

Ugh! a couple of people at high school used to have these on their phones! annoyed everyone in the class, while the teachers were clueless and wondering what we're all complaining about!

Ouch! I could hear it! lol

<a href="http://trainhorns.net/sound/"><img src="http://trainhorns.net/sound/img/passed.png" alt="Train Horns" /></a><p>Created by <a href="http://trainhorns.net">Train Horns</a></p>

i could hear it, but im under 12 lol

ARGH! i heard it alright!

:O


Was just reading that story... Guess my ears are getting old...


http://www.cbsnews.com/stories/2006/06/12/tech/main1701359.shtml

I heard it, its like that ringtone the high pitched one...

Thats quite painful

First time no couldnt hear it. played it again and could.

Weird. Yobs used to hang around the local bargin booze.

They played opra Music there. Lmao!

pmsl at that bet they soon cleared off

Dunno how that can't be heard by anyone; it's not a tone, it's like someone slowly scratching a comb off a door or something.

Just tried it again... Full volume with plug in speakers. I couldn't hear it but my brother told me to turn it off!

I can't hear it! (Not that I'm jealous )

My dad heard this - 42
I hear this - 12
My little Brother heard this - 3

This cant be right

Infact i had the same "teenage sound" on my phone and while playing it my father / mother and brother all heard it.

The science behind it is as we get older our hearing sounds capacity decreases so higher sounds we might of heard when younger can not hear when older.

This theory is contradicted by this however lol

I'll say it again - there's nothing too challenging about this sound, in my opinion, that would make it inaudible. It's not as though it's a faint tone at the top of the audible range, it's a crackly noise, like static.