[BC] interesting audio

[Barry Mishkind]

At 12:18 PM 6/12/2006, Mark W. Croom wrote
>Looks like something like 15khz tone, though I'm sure you have a 
>story to tell--some kind of odd oscillation you found in a piece of 
>gear or something.

A Ring Tone Meant to Fall on Deaf Ears
By PAUL VITELLO
For classrooms where cellphone use is forbidden, students
have found a ring tone that many adults cannot hear.

http://www.nytimes.com/2006/06/12/technology/12ring.html?th&emc=th