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 Listen up, serfs: Sonic Devices Play High-Pitched Noises To Repel Teens

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Listen up, serfs: Sonic Devices Play High-Pitched Noises To Repel Teens Vide
PostSubject: Listen up, serfs: Sonic Devices Play High-Pitched Noises To Repel Teens   Listen up, serfs: Sonic Devices Play High-Pitched Noises To Repel Teens Icon_minitimeWed Jul 10, 2019 10:07 pm

In Philadelphia, 30 parks and recreation centers are outfitted with a small speaker called the Mosquito. It blares a constant, high-pitched ringing noise all night long — but one that only teenagers and young adults can hear.
Anyone over age 25 is supposed to be immune because, basically, their ear cells have started to die off.

Listen up, serfs: Sonic Devices Play High-Pitched Noises To Repel Teens 2019-07-01-k-paynter-sonic-devices-800x450_wide-e54770abcbb94429dba4d180b4e58bdd41d47382-s800-c85

https://www.npr.org/2019/07/10/739908153/can-you-hear-it-sonic-devices-play-high-pitched-noises-to-repel-teens

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Listen up, serfs: Sonic Devices Play High-Pitched Noises To Repel Teens

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