laptop noise (was Re: [linux-audio-user] intel core 2 duo and amd
Eric Dantan Rzewnicki
eric at zhevny.com
Sat Mar 10 17:06:09 EST 2007
On Sat, Mar 10, 2007 at 04:21:47PM -0500, carmen wrote:
> On Sat Mar 10, 2007 at 04:10:30PM -0500, Eric Dantan Rzewnicki wrote:
> > On Sat, Mar 10, 2007 at 11:56:32AM -0800, Mark Knecht wrote:
> > > On 3/10/07, Lee Revell <rlrevell at joe-job.com> wrote:
> > > >On 3/10/07, Eric Dantan Rzewnicki <eric at zhevny.com> wrote:
> > > >> One issue though, I'm getting a nasty zipper noise in one
> > > >> monitor connected to the edirol ua-25 whenever any keyboard,
> > > >> trackpad, disk or video activity happens. If I unplug from the
> > > >> power supply and run on battery the noise goes away. Everything
> > > >> (laptop and 2 active monitors) are on the same power strip.
> > > >> ua-25 and remote25 are usb powered. I recall someone else
> > > >> reporting something similar recently. Is there anything I can
> > > >> try to do to get rid of the noise when plugged into power?
> > > >I doubt it - it sounds like your laptop vendor used cheap noisy
> > > >capacitors.
> > > If you use high-end power strips with over-voltage protection like
> > > from APX or other vendors then possibly putting them on separate
> > > power strips might work.
> > I'll try that. Thanks for the suggestions ... not holding out much
> > hope
> a better-isolated sound card might fix the issue as well. ive heard
> plenty of noisy desktops/notebooks that were fixed with a proper
> pci/pcmcia card.. even if the plugs were still attached to the
> card/case rather than breakout...
The edirol ua-25 should be a decent device, no? pcmcia is just not cost
effective and there only a few choices anyway.
I guess for my purposes, I'll be unlikely to ever need to do audio with
the laptop in public for longer than the battery life, so I'll live. And
I have a delta 66 in my studio PC for working at home.
> maybe even a 3-pronged AC adaptor if youre using 2-pronged? kind of a
> long shot, but who knows...
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