To:  PICLIST
    Yesterday, Martin McCormick wrote:

/Date:    Sat, 13 Dec 1997 06:52:54 -0600
/From:    Martin McCormick <martin@DC.CIS.OKSTATE.EDU>
/Subject: [OT] Sampling (was  Oscilloscope Question
/    . . . around 1980 . . .  I wanted to build
/a circuit to let a person who is blind analyze a wave form.  Those of us
/with no usable vision have no use for scopes at all, but we sure appreciate
/what they do.  What I did was . . .
/        Nowadays, this idea is made a bit easier.  I dare say that somebody
/has almost done all the work.  The P.C. sound cards can sample at 44.1 KHZ
/rates and one can do anything to the raw data after they are stored so this
/is much more manageable than my old circuit would have been.  I assume that
/sound cards have Nyquist filtering built in so that and the aliasing question
/probably means that one would have to be very creative to handle frequencies
/above 44 KHZ, but the neat thing is that sound cards are everywhere and
/relatively cheap.
/        I apologize for the length of this message, but I enjoy reading
/similar postings from others.  There might even be some PIC projects come
/from some of the ideas.
/
/Martin McCormick WB5AGZ  Stillwater, OK 36.7N97.4W
/OSU Center for Computing and Information Services Data Communications Group

Hey, Martin, don't apologize!  Ideas like this are what make PICLIST
worthwhile.  Chatter about
C vs. ASM is BORING.  Sermons about off-topic vs. on-topic are TIRESOME.  Tips
on writing
good code are USEFUL, but ideas for new applications are VALUABLE.  They're
the main
reason many of us still subscribe!

-- Mel Evans    mevans1027@aol.com    313-747-7196