A ring tone adults can't hear
Have you heard about this? http://www.nytimes.com/2006/06/12/technology/12ring.html?ex=1307764800&en=2b80d158770dccdf&ei=5088&partner=rssnyt&emc=rss
The irony is that it's an offshoot of a "teenager repellent" security device.
Poetic.
---
(Okay, not quite speech related. But certainly audio and communications related.)
