After reading all those news about 16KHz sounds used to make teens leave certain areas at night, i did some googling and found a very cool site.

http://www.teenbuzz.org/
If you scroll down you can hear all the sounds.
I am gonna use this as ringtone, and the very high freq ones to annoy teens in the bus who are playing music on their phones WITHOUT HEADPHONES!!

Its freaking cool really. I can hear 16KHz, but 17KHz just feels annoying, but i can hear no sound. My mum cant even hear the 14KHz sounds, even when i play it so loud that i want to break something!

Ok, if i turn the volume up, i can definetly heat the 17KHz one too Its cutting through bones. Guess i have to try on something else than laptop speakers.

I can hear up to 20Khz through my PC system if I turn the volume right up.

That ain't right, cos I'm 35 and I've been to many clubs with earshattering music over the years and by rights I should be half deaf.

14Khz is just painful though.

shit i can hear them all

Me an' all

I can't hear anything.

Guess my hearing is fucked up or something.
(Shooting )

oh farting hell!!!!

Anyone wanna try the 'brown noise'?

http://www.youtube.com/watch?v=QyuQIbImaWk

Guaranteed to make you shit your pants.

i've got a big stomach bug so im gonna try it


Edit: Ok Jet That Wasn't Funny At all

I don't even want to watch this

The shitass windows-movie-maker titles gave it away that it was gonna be stupid.

btw most pc soundcards (and mobile phones) will not be able to correctly play the ultrasonic frequencies. This is due to the harmonic distortions caused by the soundcard's sample rate and mp3 encoding. Not all speakers can physically reach frequencies that high either.

If you can "hear" the last few previews and they seem to sound the same, you're not hearing the true tone, but the harmonic distortions at a lower frequency.

I could hear them all and the only one that would really annoy me or make me want to leave was the 8khz & 12khz. Hooray for hearing loss! what?