13lade619
is now a game developer :)
- Reaction score
- 399
Clicking the play button below will produce a tone that is generally only heard by people under the age of 25. It has been used as a deterrent device to keep teenagers from loitering in malls and shops, and sounds similar to a buzzing mosquito. The elderly and people with hearing damage often cannot hear the sound.
http://theoatmeal.com/quizzes/sound/