Recording your phonograph records digitally (was: Play wav files from serial input)

[Jon maddog Hall]

bill at bfccomputing.com said:
> When I tried this I got a nasty ground-loop hum on the cable.   Soldering in
> a 10k resistor across one of the lines in the cable seemed  to get rid of it
> without disturbing the sound quality.  I think I knew  why that worked at the
> time, but I'm no EE... I was using a  SoundBlaster 16 which wasn't the best
> quality, so perhaps that had  something to do with it.

Sometimes (not always) that ground-loop hum is created by a difference in the
potential between the different grounds of your equipment.  Often by plugging
in all of the equipment to the same socket (or circuit) and/or (if your equipment
has two-pronged plugs where the prongs are the same size) turning one of the
plugs over so the ground is on the other side of the socket, you can eliminate
that hum.

I solved a friend's "60-cycle hum" problem on his component stereo one time by
doing this simple trick and he couldn't believe it.

md
-- 
Jon "maddog" Hall
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