From alsa-user-owner@alsa.jcu.cz  Fri Oct 23 22:10:50 1998
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From: sterwill@io.nu
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Subject: Re: TB Malibu Noisy Channel
To: alsa-user@jcu.cz
Date: Fri, 23 Oct 1998 15:05:33 -0500 (CDT)
In-Reply-To: <3630BD6E.2E50@erols.com> from "Paul Winkler" at Oct 23, 98 01:31:26 pm
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> 
> sterwill@io.nu wrote:
> > 
> > I've got a new Turtle Beach Malibu card, (a CS4237something), and
> > it's working great with the CS4236 drivers, all 15 mixer channels.  :)
> > The only problem I'm having is I hear beeps/clicks/noise on the right
> > channel when using the PCM channel (playing through /dev/dsp).
> > It's almost unbearable when wearing headphones, and really screws up
> > a Quake game (not to mention music).
> > 
> > Is this a matter of re-arranging/shielding the cards in the case
> > so that interference is lessened, or is this some other problem?
> > I'm just mailing here before I crack the case open.
> 
> One thing to try is muting all the channels, and then un-muting them one
> at a time to see if you can isolate the source of the noise. Do you
> still get the noise if only the PCM and master output channels are
> turned on? I get some noise through the CD-audio cable, and through the
> synthesizer, and a little bit through the line in if I leave an
> unterminated cable attached to it (which I have a habit of doing).
> 
> I don't know if there's an effective way to shield a card inside a
> computer. Moving it to another slot MIGHT help, preferably as far away
> from everything else as possible. But it might not.
> 
> PW
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> 

Shaw Terwilliger (twig@advancenet.net)

