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In that old battle of the wills between young people and their keepers, the young have found a new weapon that could change the balance of power on the cellphone front: a ring tone that many adults cannot hear. In settings where cellphone use is forbidden — in class, for example — it is perfect for signaling the arrival of a text message without being detected by an elder of the species. She played it for her first graders.

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Free Mosquito Ringtones. The Mosquito Ringtone came about after a crafty British man who invented a device called The Mosquito, the Mosquito is a device that emits a very high frequency tone meant to annoy teenagers adults are unable to hear the tone. Some crafty students decided to convert the same technology into a ring tone that only they teenagers could hear!

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By Alice Klein. Have you noticed that learning languages or musical instruments becomes harder as you get older? But research in mice suggests we may be able to reverse this.

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As we get older, we lose the ability to hear sounds within a higher frequency. High school students are taking advantage of this unfortunate side effect of aging. The ringtone emits a higher frequency not heard by adults, thereby giving students the unfair advantage of hearing when they receive a cellphone call or instant message. Now, it seems teenagers have turned this technology against its adult creators.

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Think you have perfect hearing? The low range of human hearing starts around 20 hertz, and tops out at about 20, [ PDF ]. By contrast, bats can hear ultrasonic sounds with frequencies up tohertz.

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A sonic device is seen at top right at Barrett Playground in Philadelphia. Thirty parks in the city have the devices, which emit a constant, high-pitched noise that only teenagers and young adults can hear. In Philadelphia, 30 parks and recreation centers are outfitted with a small speaker called the Mosquito.

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Introduction Ever wonder why some adults experience trouble with hearing as they get older? Hearing loss tends to become more severe as we age. But does hearing loss cause everything to sound uniformly softer or do certain sounds become harder to hear than others?

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Acoustic neuromas are small, benign tumors that can cause hearing loss, problems with balance, facial numbness, headaches and fatigue. Read more. Because ASD affects each child differently, seek help from your hearing healthcare professional if you believe your child is having difficulty with their hearing. Known as telehealth audiology, it's growing in popularity for rural or housebound patients.

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The functioning of the inner ear is at least temporarily altered by exposure to low-frequency sounds. A wind turbine, a roaring crowd at a football game, a jet engine running full throttle: Each of these things produces sound waves that are well below the frequencies humans can hear. Listening to just 90 seconds of low-frequency sound can change the way your inner ear works for minutes after the noise ends, a new study shows.

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Several young students have caught on to a recent trend: a ring tone that only they can hear and most adults can't. Dubbed the Mosquito, the noise stems from an antitheft technique in the United Kingdom, where it was used to deter youth crimes such as shoplifting. The idea is that most adults lose the ability to hear high-pitched sounds as they grow older, so this tone will reach the ears of only the young. Some enterprising unknown must have then copied this high-pitched tone and made it into a ring tone, which was then distributed to students in the United Kingdom and spread around on the Internet until it eventually reached U.

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