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Merthyr Tydfil-based Compound Security released the "Mosquito" ringtone as a way of letting teenagers hear their phones ringing without adults knowing.

It was developed because adults lose the ability to hear high-pitched sound.

But now the sound is being used in a dance track, Buzzin', with secret melodies only young ears can hear.

The tune was developed after the success of the company's ringtone which was released in June.

It has two harmonies - one that everyone can hear and one that only young people can hear, but it works well together or separate.

This is due to a condition called presbycusis, or aging ear. By the time most people reach the age of 25, they cannot hear much above a frequency of 13 or 14 kilohertz.

Posted in y2kh8r's blog | | | | 287 reads