High Frequency

You may have heard about the super high pitched frequency supposedly only people under the age of 30 can hear. This has been used by store owners as a teenager repellant. Later, kids used it as a ringtone or text message indicator that they could use in class that their teachers couldn't hear.

Well here's the frequency. Click the link to hear it. I didn't expect to be able to hear it but I do and it is very annoying. Yuki also perks up his ears. Can you hear it?


HIGH PITCHED FREQUENCY LINK