You've probably heard about the mosquito, a device that plays a high pitched noised only audible by the under 20s (in theory) used outside shops to annoy children. As we get older our hearing degenerates leaving us unable to hear high pitched tones, but can you hear it? I could hear all of them and I've got tinitus from bike riding.
Rob (22)
Mosquito it's a pretty dirty recording of it though, I think the mp3 encoding has ruined it
18KHz
17Khz
16KHz
15KHz
