stan wrote:
>> > Beyond that you could change the dmix6 to use only 4 channels, 0,
>> > 1, 2, 3.
>> I'll try this. Can I also just skip dmix6 and route the sound
>> directly to hardware ?
>>
> I'm not sure, but I don't think so. I think the channels are being
> defined by the dmix6 plugin, and so can't be used unless it is there.
> I'm not familiar enough with the plugin system to know if there are
> default channels defined, the 0-5 of the above ch51dup. Just drop it
> and leave the channels slave there and it might be enough to try
> # upmixing:
> pcm.ch20dup {
> type route
> slave.channels 4
> ttable.0.2 1
> ttable.1.3 1
> }
When I'm changing channels count to 4 for both ch20dup and dmix6 it works
well.
> This will be true if the channels slave is defining the channel
> numbers. It might be, and if this works it would definitely be more
> robust and less cpu load than the first version. It should give you
> the identical output that you would get on the front channels.
I've tried it. It works but still requires defining the channel number. It
also requires different ttable:
pcm.ch20dup {
type route
slave.pcm "hw:0"
slave.channels 6
ttable.0.4 1
ttable.1.5 1
}
I've found one more strange problem: when the sound is played using dmix
everything is good, but when playing it directly it plays slightly faster
then it should - I've checked it with mplayer.
>
> Predefined channels would only require
>
> # upmixing:
> pcm.ch20dup {
> type route
> ttable.0.2 1
> ttable.1.3 1
> }
>
> Just try them, you won't hurt anything, and then you'll find out which
> one is best for you. It would be good if you posted your results back
> here so other people looking for a solution gain the benefit of your
> experience. :-)
>
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--
Best Regards,
Vladimir
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