On Sat, Jul 20, 2013 at 08:24:26AM +0200, Vincent Bernat wrote: > That's not a channel weight matrix, that's a remap of the channels. It's > not something fancy to have the rear left channel go to the rear left > speaker. > > As for the channel weight matrix, it's usually the job of the AV > amplifier to do that. And of course PulseAudio has also something like > that: run pavucontrol and move the sliders for each channels. I don't > see exactly the point to go to the documentation for that. PulseAudio is > easy.
Excuse me but I can't seem to find that in pavucontrol. All I see is a single slider for each channel. Ie, instead of: 1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 1 you can have: 1 0 0 0 0 0 0.5 0 0 0 0 0 0.8 0 0 0 0 0 1 0 0 0 0 0 1 but not: 1 0 0 0 0 0 0.5 0.2 0 0 0 0.1 0.7 0 0 [these particular values don't make much sense] 0 0 0 1 0 0 0 0 0 1 That not really documented ability to remap channels allows at most permuting them. I also wonder what would be the purpose, unless your setup is hard-wired at every single step, without the ability to pull a plug and put it in correctly. The purpose of the matrix is twofold: * to handle placement of speakers that are not at correct angles * properly down/up scaling signal that has more/less channels than you have speakers Both of those are impossible using only capabilities PulseAudio has (or at least exposes), while easy using ALSA. A wish: editing these matrices (multiple: you need one for at least 2->5.1, 5.1->5.1, 7.1->5.1) is not anything I'd expose an average user to, either. The best GUI would be what I've once seen on some manufacturer-specific Windows driver: you add/remove speaker icons and move them on a 2D display. The matrices are then generated based on relative angles and distances. Preferably together with a clone of ALSA's speaker-test. -- ᛊᚨᚾᛁᛏᚣ᛫ᛁᛊ᛫ᚠᛟᚱ᛫ᚦᛖ᛫ᚹᛖᚨᚲ -- To UNSUBSCRIBE, email to debian-devel-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20130720133739.ga5...@angband.pl
