[Openal] problems with surround under Linux

[Tomasz Noiński]

On Thu, 9 Nov 2006, Jason Daly wrote:

> Tomasz Noiński wrote:
> >>> 8) speaker-num 4, surround40:0,0
> >>>
> >>> The same sound in rear and front speakers.
> >>>
> >> The SI only has support for stereo and quad sound output, so no 5.1. I don't
> >> quite remember what was needed to enable quad output, but I'd think your last
> >> try should have had success. I'll check when I find time (not before
> >> week-end).
> >>
> 4.0 surround should work with the settings you described.  Are you sure
> you're getting the same sound from front and rear?  The SI's rendering
> algorithm is not as good as it could be, and it produces a soundfield
> with somewhat limited channel separation.  (This is something I've
> wanted to fix for a while, but I don't have the time that I used to).

I've just tested it again:
I set "speaker-num" to 4 and device to "surround40:0,0".
I run altest - "position test", than started "looping sound in rear-left"
(or something like that).
I could hear the beeping sound in both rear-left and front-left speakers;
equally loudly, I think.

[about "sample implementation"]
Are there any alternative openal libraries I could try (Linux+Audigy2)?
Is there a sure way to determine if Ubuntu really ships SI?
What implementations should I try? I could download a few and try to
compile altest against all of them, and compare the results...

Noix