[Openal] problems with surround under Linux

[Jason Daly]

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).
>>     
>
> Uhm, I don't really know what "SI" means... Could you please elaborate? :)
>
> I believe OpenAL itself has 5.1 support, so it could mean that this exact
> implementation can't do 5.1?
> Are there any alternatives I should look into?
>
> (I would be really happy to have 4.0 surround, anyway)
>   

SI = "Sample Implementation"  In the Subversion repository, the SI is 
found in the OpenAL-Sample directory.  The SI is also the one packaged 
with various Linux distributions.

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).

--"J"
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