Hello. My friend yesterday said that on the news people in shops were using high frequencies to deter people who are younger than 20 (because only people younger than 20 can hear these sounds). I did some research and found a website with diferent frequencies the frequencies are 18-20kHz. Could you listen to these sounds and vote and tell me wether you are over 20 and can her it or can't or if your younger than 20 and can or can't hear it. I have found that you may need to turn up the volume on your speakers.
The site is here:
German origional
The site is in german so if you can't read german please go here for the english:
English Translation
/ –![[Image: fergofrog.png]](http://msig.info/latest/{http://img232.imageshack.us/img232/4718/jaal2edit36aj.jpg}/fergofrog.png)
![[Image: repute.gif]](http://shoutbox.menthix.net/images/mp3me/repute.gif)
