Poor sound quality with snd_via8233

[Angka H. K.]

Ah thats is a nice story.
But sadly it's not as nice as I have. My soundcard is still buggy with
the RELENG_6
source (cvsuped at 21 march 2006 18:00 WIT), to server "cvsup.id.freebsd.org
".
I have the solution by changing the initialization option at the ich.c (I
got from someone here, many thanks).
My Laptop is HP V2388-TU serries with ICH6 hardware and i915 graphic card.
Also my drm is not compiled with this source. I have to apply another patch
to make it work.

What should I do to resolve this ?


On 3/21/06, Oliver Fromme <olli at lurza.secnetix.de> wrote:
>
> Ariff Abdullah <ariff at freebsd.org> wrote:
> > Niklas Sorensson <nik at cs.chalmers.se> wrote:
> > > apa# /usr/sbin/mixer
> > > Mixer vol      is currently set to 100:100
> > > Mixer pcm      is currently set to 100:100
> > > Mixer line     is currently set to 100:100
> > > Mixer mic      is currently set to 100:100
> > > Mixer cd       is currently set to 100:100
> > > Mixer rec      is currently set to 100:100
> > > Mixer igain    is currently set to 100:100
> > > Mixer ogain    is currently set to  10:10
> > > Mixer line1    is currently set to  75:75
> > > Mixer phin     is currently set to   0:0
> > > Mixer phout    is currently set to   0:0
> > > Recording source: mic
> > >
> > Reduce those "100" to "85", or less. You're overdriving it too much,
> > hence, the constant distortion. If you have amplified speaker, use the
> > volume knob there.
>
> In fact, I would recommend to set _all_ of them to zero,
> except for those that you really need (probably just "vol"
> and "pcm").  Otherwise your soundcard might pick up some
> noise from non-connected analog ports (e.g. line or mic),
> amplify it in the mixer and reduce the overall signal-to-
> noise ratio.
>
> > Report (and partially from my experiences) indicate that using
> > SCHED_ULE can give better audio/multimedia performance. Perhaps you
> > want to give it a try.
>
> While we're on the topic ...  I'd like to say a BIG THANKS
> to all people working on FreeBSD, particularly the multi-
> media stuff (sound drivers, AGP, DRI/DRM), the scheduler,
> VM system and what-not ...
>
> Yesterday I burned a CD-R while a lengthy port was compiling
> in the background, _and_ I watched a video fullscreen at the
> same time.  No sound skipping or any problems.  The CD image,
> the port and the video were all stored on the same HD.  That
> was on a Centrino 1.6 GHz notebook (ICH6 sound hardware, i915
> graphics), running RELENG_6, with the standard BSD scheduler.
> And yes, the CD-R that I've burnt has no errors.  :-)
>
> Best regards
>   Oliver
>
> --
> Oliver Fromme,  secnetix GmbH & Co. KG, Marktplatz 29, 85567 Grafing
> Dienstleistungen mit Schwerpunkt FreeBSD: http://www.secnetix.de/bsd
> Any opinions expressed in this message may be personal to the author
> and may not necessarily reflect the opinions of secnetix in any way.
>
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> in a four-hundred mile per hour wind, balancing on a banana
> peel on a greased cookie sheet -- when someone throws him an
> elephant with bad breath and a worse temper."
>        -- Ralf Hildebrandt
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