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Try It: Can You Hear These Sounds Only Young ... - Yahoo
https://www.yahoo.com/lifestyle/try-it-can-you-hear-these-sounds-only-young-112627654778.html
17,400 Hz is the frequency only teenagers can hear! Most people over 18 should not be able to detect this sound. Some major retailers actually use this science to keep teens from loitering outside...
Kids Be Gone: High Pitch Only Teens Can Hear Used As ...
https://www.huffpost.com/entry/high-pitch-only-teens-can_n_98304
It's this screeching sound that you have to get away from, or it will drive you crazy." The high-frequency sound has been likened to fingernails dragged across a chalkboard or a pesky mosquito buzzing in your ear. It can be heard by most people in their teens and early 20s who still have sensitive hair cells in their inner ears.
High Frequency Teenager Deterrent: Mosquito Device Used To ...
https://www.trendhunter.com/trends/high-frequency-teenager-deterrent-mosquito-device-used-to-disperse-teen-gro
Most people have lost the ability to hear those frequencies, 17 - 18 kHz, by the time they reach 25 years of age. The sound is emitted at a level of 5 dB above surrounding noise levels, up to a maximum of 85 dB, about as loud as busy city street.
The Teenager Audio Test - Can you hear this sound? - The ...
https://theoatmeal.com/quizzes/sound/
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. Player not working?
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