Ross Lippert wrote:
I just got new hardware and I installed 5.1 on it (not tht it matters,
because what I am asking about is observed in 4.X).
Why is it that so-called the built-in soundcard that my motherboard
comes with does work with everything?
By that I mean that I can play the usual multimedia stuff without
a hitch, xmms, mpg123, mplayer, artsd all work just fine. The card comes
up as some AC97 under pcm.
But if I try to use some of the more esoteric ports like stella
or festival, I get no sound. With festival I can do a trick like
filter the output through the command
'sox -r 1600 -t sw $FILE -r 4800 -t ossdsp /dev/dsp'
because it provides hooks to do this, but I don't see why I have to
(btw the port can't build festival on 5.1 yet, but you can on 4.X,
and I am working on patching it for 5.1).
stella, the atari emulator, has the same trouble.
I have observed this on another motherboard with a so-called built-in
soundcard as well (mpg123 plays, sox plays, stella doesn't) about
2 years ago (problem solved by buying a SB16 for it).
The solution has, in the past, been to just keep using an old
soundblaster card and disabling motherboard sound in favor of the
SB card. But I am tired of using up a PCI slot just to keep a
handful of my favorite ports running.
I've looked at the sources to festival (and a bit at stella, though
I do not understand them as well), specicially the voxware.cc file
which seems to talk directly to /dev/dsp. It doesn't seem to do
anything fancy, just sets the same rate and copies an array of
sound bytes to a FILE*.
So I ask, where does the fault lie? Is stella/festival soundblaster centric,
and just won't talk to AC97 cards? Is my motherboard AC97 deficient?
And why are motherboard cards deficient? Should I focus my energy
on my hardware (replace card)? My OS (debug AC97 driver or find a sox-like
workaround for stella)? Or my apps (debug stella and festival)?
I'll bet there are other ports that I don't use that have this same
trouble.
-r
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I don't think the problem lies in your built in sound card.
Maybe arts is giving you trouble. Read common problems under
http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/sound-setup.html
See also the arts FAQ:
http://www.arts-project.org/doc/mcop-doc/artsd-faq.html
Jason
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