Year 10 - The mosquito ringtone

I mentioned in class about a ringtone that you can download that has such a high frequency that I think only the girls will hear it.

Check it out here on http://www.freemosquitoringtone.org/about.php

All sound are waves and different frequencies (pitch) give different sounds. The theory is that as you get older your hearing decreases and you hear less frequencies of sound.

So they invented a ringtone that has a really high frequency and in theory older people (i.e. your parents) would not be able to hear the phone if you have a really high frequency!

Try out the ringtones on http://www.freemosquitoringtone.org/