-=[ Quoting Bogdan Velikiy to Phil Roberts ]=-
 BV> Hi Phil!
 PR> Voice stress is one of the later generations of lie detectors, not
 BV> Sure.'cos it needs a lot of computer power and decent audio equipment.
When this was announced, about 10 years ago, it was claimed that TV
broadcasts and possibly telephone calls could be analyzed by voice stress.
To me, this doesn't push the envelope of what the average computer could do.
Of course, these days the average PC is pretty hot, and has remarkable audio
capabilities.  :)
 PR> really related to the polygraph.  I could probably rig up a polygraph
 PR> with a decent A/D card and some junk out of the basement.  :)
 BV> Try to make and tell us about results.;))
The skin galvanic is pretty easy.  The heart rate and breathing aren't so
easy, but it could be done.  We were doing skin galvanic readings in electric
shop back in 1975 with a digital VOM.  The heart rate can be taken from a
pulse sensor "borrowed" from scrapped excersize equipment.  The breathing 
ate
can be taken by a microswitch triggered by a flap of plastic in the air path.
Actually, I'd have to be nuts to try this, since I'd have no idea how to
interpret the readings.  The whole point of voice stress is that you can get
a ballpark estimate of whether someone's lying _without_ hooking anything up
to the person.
                                Phil
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