Re: [Alsa-user] Only a few devices with Audigy 2

[p z o. <pz...@po...>]

in ALSA >=3D 1.0.0 Front, Surround, Center, LFE volume controls only=20
upmixing (mirroring).
if you set surround, center to 0) you dissable mirroring to surround=20
and center. LFE is (L + R) / 2. If you need downpass filter for LFE=20
from L, R channels, then you must change DSP program in driver.

If you want mono to Center + LFE then define new device(or change=20
front device) in .asoundrc (look=20
at /usr/share/alsa/conf/card/Audigy2.conf for example rear device and=20
set routing only to center, lfe fxbus for mono sound and Left, Right,=20
lfe for stereo sound - and use PCM Center, LFE Volume and PCM Left,=20
PCM Right), or change emu10k1 driver to your needs. (or use ld10k1 to=20
set your own routing).

For 5.1 playback PCM Front, PCM surround, PCM center, PCM LFE volume=20
controls are used and they are independent from from Front, Surround,=20
Center and LFE controls.

PS: For me windows mixer always do upmixing to 5.1.

Peter Zubaj
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