Frequency that annoys teens

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  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. Com that will show you if you are capable of hearing the annoying teen repelant mosquito sound. The frequency at which it operates is at the very limits of our hearing and will be heard only by youngsters. It is like when people are young they can hear the noise of bats but not when they. The mosquito works by emitting an alternating high-frequency tone four times a second which isnt audible to people over about 25 years of age, but is intensely irritating to people under that age. The limit of adult hearing is approx 13,000 hz, the limit of child teenager hearing can extend to 20,000 hz. This means that any sound between 13,000 hz and 20,000 hz will be inaudible to most adults and audible to most children teenagers. Most modern sound cards and multimedia speakers can easily generate high frequency sonic sound in this. Ive already written about merchants using classical music to discourage loitering. Young people dont like the music, so they dont stick around.   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.   the study also shows that sounds in the higher-frequency range of around 2,000 to 5,000 hz were rated as most unpleasant.

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