Phil Carter wrote:
I have my keyboard midi ports connected to my computer
through the
game port on my motherboard sound card. It works fine, except I'm
hearing some noise through the audio output on my keyboard when the
midi cable is plugged into my computer.
Apparently, some MIDI IN connector has pin 2 connected to the ground,
which is a Bad Thing(TM) to do; see
<http://www.midi.org/about-midi/electrical.shtml>.
Is there anything I can do to correct this? Is it
because I have a
cheap sound card? I've thought about getting a somewhat better
soundcard, possibly an SB Live!, or a USB midi interface instead
of my gameport midi interface.
The ground loop might be caused by your gameport MIDI interface, so
there is the possibility that you have a chance that a USB MIDI
interface might fix the problem, if you're lucky. However, many other
devices get this wrong, too.
You could try to 'modify' your interface so that pin 2 (the middle
pin) of the MIDI IN connector is permanently disconnected ...
Regards,
Clemens