Teenager Audio Test

I’d say this was a hoax, but the editor at Mental Floss said they couldn’t hear it and I can. I wonder what the real science behind this is. Does it really have anything to do with age or is it just some genetic predisposition to that particular frequency.

In any case, Train Horns Sound Experts have posted this as the Teenager Audio Test claiming this sound is generally only audible to people under the age of 25 (and is often used to deter loitering by youths).

Created by Train Horn