14 years ago
Here's a quick way to test your hearing vs. your age.
They are ultrasonic ring tones. Kids are using them so that their teachers
and parents can't hear their cell phones ringing.
They are grouped by age. Unfortunately I can't hear too good. If you don't
think there's any sound on the younger ages (higher frequencies) just crank
it up and see if a kid can hear it. If you have the volume turned up loud
enough it will make them yelp in pain. Meanwhile, I can't hear it at all.