Teens Turn To High Frequency 15Khz Ringtones Adults Can't Hear
 

The war between teens and authority figures has a new -- or old -- front: ears. At issue is a text-message ring tone that emits a high-pitch frequency that most teenagers can hear -- but not most adults who are over 30.

It's stupid if you ask me. The cheap cellphone speakers usualy can't handly that frequency and it's so silent that it's hard to hear when there's a litlle bit of sound. My K700i emits a very high frequency tone, but it also emits a lower frequency tone ... wich older people probably can hear too ... gonna test it with my parents
Worse is, it's giving me a headache ...:D