I read in sci.electronics.design that Ken Taylor
wrote (in ) about 'mobile
(cell) phone jamming', on Wed, 24 Dec 2003:

What's the difference whether I'm talking to a person in the flesh or via a
piece of plastic and metal.

It's not the phoning that's annoying, it's the loud voice, which is
quite unnecessary but we've got used to it through using ordinary
phones. Ordinary phones have 'sidetone' anyway - you hear your own voice
in the earpiece and that helps to control your own voice level. Mobile
phones DON'T HAVE SIDETONE, which is a bit of a surprise when you first
realise it. WHY they don't have it, I don't know; maybe the small
dimensions mean that a usable level of sidetone results in acoustic
feedback. But a mobile with sidetone might eliminate the annoying VOICE
LEVEL.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
Interested in professional sound reinforcement and distribution? Then go to
http://www.isce.org.uk
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