HighRing — The Ringtones only can be heard by teenage

Many schools prohibit to use mobile phones on class. However recently a kind of ringtone that only can be heard by teenage is used to let students use their mobile phones without alerting their teachers.

The theory is that people can hear sound ranges from 20 to 20k Hz. And there is a slight difference between the hearing of teenage and adult — most people lost the ability to hear high frequency sound while becoming older.

In Britain, a company uses this theory to make a special sound effect target to young people. According to measurement, the frequency of this so called “HighRing” sound effect is 14.4k Hz, which is very close to the threshold of the upper limit of that human’s hearing, so that adult cannot hear it. This security company developed this sound effect to drive teenage away. However it turns to be a very popular ringtone among young people. It cannot be heard by adult in some locations forbidden to use ringtone, for example, in classroom and cause a lot of headache to schools.

This entry was posted on Tuesday, February 26th, 2008 at 2:49 pm and is filed under Mobile, ringtone. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.