[Openal] Linux: AL_CUTTOFF_ATTENUATION set too high?

[Adam D. Moss]

Elias Naur wrote:
> I'm working on the RTS game Tribal Trouble, which is using OpenAL for sound 
> effects and music on Linux, Mac OS X and windows. However, after some 
> experiments, it quickly became apparent that Linux has a much higher minimum 
> source gain threshold when using distance attenuation or simply source gain. 
> This results in sounds being audible too far away, or too abrupt source 
> culling.
> 
> I digged through the openal source code (latest from CVS as of today) and 
> found that the minimum source gain is controlled by _AL_CUTTOFF_ATTENUATION 
> defined in al_attenuation.h. The constant comment states that the purpose of 
> the minimum is to avoid popping artifacts, but the current value (0.01) seems 
> way too high for me. I tried a value of 0, which gave me the same sound 
> experience as on the other platforms, but since 0 is probably not the right 
> value, I'm asking: Is 0.01 set too high or am I just being too picky 
> regarding source gain and distance attenuation?

Sorry for the very late response.  I think this is just set too high!
Did you deploy with a different value?  I think this should probably
be 1/256 or even smaller.

--adam
-- 
Adam D. Moss   -   adam at gimp.org