13 Ringtones That Adults Can�t Hear

13 Ringtones That Adults Can�t Hear

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NEW YORK (AP) - Students are using a new ring tone to receive messages in class � and many teachers can�t even hear the ring. Some students are downloading a ring tone off the Internet that is too high-pitched to be heard by most adults. With it, high schoolers can receive text message alerts on their cell phones without the teacher knowing.

As people age, many develop what�s known as aging ear � a loss of the ability to hear higher-frequency sounds.
The ring tone is a spin-off of technology that was originally meant to repel teenagers � not help them. A Welsh security company developed the tone to help shopkeepers disperse young people loitering in front of their stores while leaving adults unaffected. The company called their product the �Mosquito.�
Donna Lewis, a teacher in Manhattan, says her colleague played the ring for a classroom of first-graders � and all of them could hear it, while the adults couldn�t hear anything.

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