Re: [LAU] Recording hiss - M-Audio Fast Track Pro, Fedora 8 CCRMA

On Fri, 2008-06-06 at 21:40 -0700, Thomas Vaughan (Yahoo) wrote:
> > > Hello all-
> > >
> > > I've been setting up a digital audio workstation
> > using Fedora 8 and the PlanetCCRMA realtime kernel.
> > I've got an M-Audio Fast Track Pro connected via USB
> > for audio and MIDI i/o.
> > >
> > > A log of my efforts is here:
> > http://www.wavepacket.net/tomva/wl-012-mobile-daw.html
> > >
> > > Everything has worked out great so far, *except* for
> > recording.
> > >
> > > When I attempt to record audio using the Fast Track
> > Pro, I hear a *lot* of line noise. It doesn't seem to
> > matter what input I use (1/4" jack or XLR), nor does
> > adjusting the sample rate or frame count. I get the hiss
> > recording a guitar (direct line) or mic. I don't see
> > any xruns.
> > >
> > > The Pro appears to have some sort of noise gate?
> > Certainly it is quiet until I start playing, at which point
> > I'll hear the guitar plus a lot of hiss. Other parts of
> > my sound gear don't show this symptom.
> > >
> > > Any ideas? I'm hoping this is due to bad
> > Alsa/JACK settings and not to the Fast Track Pro.
> > >
> >
> > - Try a different USB port
> >
> > - See if you can reproduce the problem on another OS
> >
> > Lee
>
> WOW. Moving to a different USB port fixed it. Perhaps it was just restarting the machine and interface? But it is plugged into a different USB port (back of the laptop instead of the side) and the recording quality is great.
>
> Thanks! A lot easier than digging in config files or JACK settings :)
>

    On some Dell laptops the top side USB port is 1.0 while the bottom
side port and back ports are 2.0 - go figure.

-- 
Jan 'Evil Twin' Depner
http://www.thecfband.com
"Microsoft has a new version out, Windows XP, which according to
everybody is the 'most reliable Windows ever.' To me, this is like
saying that asparagus is 'the most articulate vegetable ever.'"
Dave Barry
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