Bug#503839: [Pkg-alsa-devel] Bug#503839: /usr/lib/alsa-lib/libasound_module_pcm_vdownmix.so: vdownmix from 5.1 does not incorporate LFE channel
On Mon, Sep 7, 2009 at 21:13, Josh Triplettj...@joshtriplett.org wrote: not working seems to be expected; a segfault seems like a bug regardless. :) What I was trying to say is that you can expect the bug: if you define a pcm device named surround51 as a vdownmix type, and then 'plug' it as a slave pcm in another vdownmix type pcm device...well, here comes the bug. :) With your setup, does speaker-test -c 6 -t wav generate sound for all six channels? Ok, so I don't get the .1 output either, but is it relevant here ? The speaker test doesn't output it, but any 5.1 video just plays fine, 6 channels and all. At lest I assume, since I don't feel like there's any sound missing while watching... It certainly *shouldn't* depend on the sound card. Mixing 5.1 to 2.0 in software should work anywhere, and I have working 2.0. Of course, that doesn't mean it *doesn't* depend on the sound card, just that it *shouldn't*. :) Well, here is what I get on an X60: ~$ speaker-test -c 6 -t wav speaker-test 1.0.20 Playback device is default Stream parameters are 48000Hz, S16_LE, 6 channels WAV file(s) Rate set to 48000Hz (requested 48000Hz) Buffer size range from 64 to 16384 Period size range from 32 to 8192 Using max buffer size 16384 Periods = 4 was set period_size = 4096 was set buffer_size = 16384 0 - Front Left 4 - Center 1 - Front Right 3 - Rear Right 2 - Rear Left 5 - LFE Time per period = 8,401077 I'll be glad to further test too, since there's obviously something strange here. Cheers. -- Apelete Seketeli apel...@seketeli.org -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org
Bug#503839: [Pkg-alsa-devel] Bug#503839: /usr/lib/alsa-lib/libasound_module_pcm_vdownmix.so: vdownmix from 5.1 does not incorporate LFE channel
* Josh Triplett [081028 09:45 -0700]
Package: libasound2-plugins
Version: 1.0.16-1+b1
Severity: normal
File: /usr/lib/alsa-lib/libasound_module_pcm_vdownmix.so
The vdownmix plugin suggests this for .asoundrc:
pcm.!surround51 {
type vdownmix
slave.pcm default
}
Using that setup and a pair of stereo speakers or headphones, I ran
speaker-test -D surround51 -c 6 -t wav. The audio for the front
left, front center, front right, rear left, and rear right speakers
came through just fine (and even sounded spatially correct with
headphones), but the LFE channel (the .1) did not produce any audio.
Could you please update to the latest version and test again?
Elimar
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Bug#503839: [Pkg-alsa-devel] Bug#503839: /usr/lib/alsa-lib/libasound_module_pcm_vdownmix.so: vdownmix from 5.1 does not incorporate LFE channel
* Josh Triplett [081028 09:45 -0700]
Package: libasound2-plugins
Version: 1.0.16-1+b1
Severity: normal
File: /usr/lib/alsa-lib/libasound_module_pcm_vdownmix.so
The vdownmix plugin suggests this for .asoundrc:
pcm.!surround51 {
type vdownmix
slave.pcm default
}
Could you please test:
pcm.!downmix51 {
type vdownmix
slave.pcm surround51
}
pcm.!default plug:downmix51
Elimar
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Bug#503839: [Pkg-alsa-devel] Bug#503839: /usr/lib/alsa-lib/libasound_module_pcm_vdownmix.so: vdownmix from 5.1 does not incorporate LFE channel
On Sat, Sep 05, 2009 at 01:17:33PM +0200, Elimar Riesebieter wrote:
* Josh Triplett [081028 09:45 -0700]
Package: libasound2-plugins
Version: 1.0.16-1+b1
Severity: normal
File: /usr/lib/alsa-lib/libasound_module_pcm_vdownmix.so
The vdownmix plugin suggests this for .asoundrc:
pcm.!surround51 {
type vdownmix
slave.pcm default
}
Using that setup and a pair of stereo speakers or headphones, I ran
speaker-test -D surround51 -c 6 -t wav. The audio for the front
left, front center, front right, rear left, and rear right speakers
came through just fine (and even sounded spatially correct with
headphones), but the LFE channel (the .1) did not produce any audio.
Could you please update to the latest version and test again?
Still a bug in libasound2-plugins 1.0.20-1.
- Josh Triplett
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