I'm glad I could help! That bug (feature for most people :) ) bothered me for quite a while too. Matt Jan Kasprzak wrote: > Jan Kasprzak wrote: > : > : > I seem to remember (I had this problem before) that pulseaudio by default > : > applies mixing to a greater than stereo card if a stereo sample is sent > : > to it. At the time there was a flag or option in the config file that > : > could be set, but since I didn't end up going that route I don't have > : > it anymore. I believe it was Lennart who gave me the hint to the issue > : > (and might have actually fixed my specific issue in the code). This was > : > back in 9.10, which I am still running. > : > > : > Just another avenue to explore, sometimes that's all you need. > : > : OK, I have found that PA inded does this (see the > : src/pulsecore/resampler.c:calc_map_table() function). > : Thanks! > : > : It also explains my observations with special behaviour of the > : Subwoofer/LFE channel - it is hardcoded for the LFE there). > : It is apparently driven by the PA_RESAMPLER_NO_REMAP flag, > : but I have to figure out where can I set this flag and whether it > : can be done without recompiling PA. > > OK, the "remix=no" on the module-remap-sink did the job. > I have added the description of this option to the documentation at > > http://pulseaudio.org/wiki/Modules > > Also, naming the all channels but the first two "aux0 to aux5" > instead of "rear-left,rear-right,center,subwoofer,side-left,side-right" > does the job, because the aux channels are not included in the default > PA up-mixing. This is even written in the example, I don't know why did > I overlooked it. > > -Yenya > >
