when i play dvd's on my computer, i hear feedback in my speakers. My
computer is connected to an amp, which has two bookshelf speakers.
it's especially noticable when i'm playing surround sound, because i
only have two speakers. If i buy an upper end Creative card, will the
feedback be reduced because of the signal to noise ratio, or will it
remain the same?

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Clarification of Question by twowaymirrors_net-ga on 26 Sep 2005 20:16 PDT

the volume levels are already all the way up

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Clarification of Question by twowaymirrors_net-ga on 29 Sep 2005 12:10 PDT

thanks l0bster, that's pretty much what i thought, too. I'm going to
try the new creative xi card and see how that improves the sound
quality!

Open the Windows volume control utility (click on the speaker icon on
the task bar) or use the Windows control panel to open the Sounds and
Multimedia icon, and disable or mute the microphone input. Even
without a microphone connected, the mic input will cause distortion
and noise on the audio output with any sound card.

Do the same procedure as noted also to the "line-in" volume as well.

This should be fixed by getting a decent sound card.  On low end sound
cards electronic noise can "leak" into the circuit / cables causing
audible feedback.  I had the same problem on my PC but it was resolved
when I installed a Soundblaster Audigy.

This can also be caused by having power cables wrapped around your
speaker cables.  The alternating current can cause induction in the
speaker cable which causes a buzzing sound.  Before buying an
expensive soundcard I would check your connections thoroughly and
rearrange your cables so the speaker cables are completely seperate
from the rest of them.

Hope this helps.