[SoX-users] Libao Vs alsa

[Pascal G. <evi...@gm...>]

Hi guys,
 this is not directly sox related, but i'm writing this in case any of
you encountered this before.

I seem to have a noise problem with my souncard and i'm trying to narrow it=
.
I can easily reproduce both cases and would like to fix the issue for good.

Simply put, using libao i hear distortion, using alsa i don't.
Strange as libao uses alsa (default_driver=3Dalsa)...

So the following plays with distortion:
sox /tmp/my.ogg -t ao default

The following works perfectly:
sox /tmp/my.ogg -t alsa default

Shouldn't it be the same?

Running sox with -V4, i see a warning when forcing alsa which i don't
see for libao.
The warning is: alsa: driver supports only signed and unsigned
samples.  Changing to signed.

Again, this is not sox specific. I hear distortion in rhythmbox...
While xine/gxine/mplayer/xmms work fine with default settings (all
four use default alsa device).

Any idea/tip/hint?

-Pascal
PS: I also had a look at http://alsa.opensrc.org/index.php/Via8233,
without much success.
--=20
Homepage (http://organact.mine.nu)
Debian GNU/Linux (http://www.debian.org)
LACIME: =C9cole de technologie sup=E9rieure (http://lacime.etsmtl.ca)