Joe Levi:
a cross-discipline, multi-dimensional problem solver who thinks outside the box – but within reality™

Stealth Ring Tone

Mobile Phone

You’ve heard about the new “stealth ring tone” that the kiddies are using on their cell phones to get calls and text messages without their teachers hearing it?

With a modern enough cell phone, the ring tone is so high-pitched that “grown up” ears supposedly can’t hear it. The older our ears get, the more loss of hearing we have in the upper- and lower-most segments of the audible spectrum.

Here’s the tone [20060610_RINGTONE.mp3], can you hear it?

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