A new ringtone tested in 2006 revealed only kids could hear its high-pitched sound, leaving adults baffled. A new ringtone tested in 2006 revealed only kids could hear its high-pitched sound, leaving ...
Our hearing picks up a limited range of sounds, limits that were used successfully to keep teenagers from congregating outside British grocery stores by a device called the “teenage sound repeller." ...
They don't hear anything. Nothing, nothing. I don't hear anything. And I'm supposed to have very good hearing. Today we field tested the new ringtone, downloaded the sound onto the cell phone, and hit ...
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