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187
n00b
Joined: 30 Sep 2003
Posts: 10
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 Posted: Sun Mar 18, 2012 6:21 am Post subject: [SOLVED] ALSA - enabling both equalizer and channel duplicat |
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Hello !
Finnaly I found equalizer I want - media-plugins/alsaequal and example how to duplicate stereo to other (5.1) channels (see below).
Both equalizer and duplication works separately, but how can I make them work simultaneously ?
duplication:
pcm.duplicate {
type plug
slave.pcm "surround51"
slave.channels 6
route_policy duplicate
}
equalizer:
ctl.equal {
type equal;
channels 6;
}
pcm.plugequal {
type equal;
slave.pcm "plug:dmix";
channels 6;
}
pcm.equal {
type plug;
slave.pcm plugequal;
}
Thanks !
Last edited by 187 on Sun Apr 08, 2012 12:35 am; edited 1 time in total |
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PaulBredbury
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Joined: 14 Jul 2005
Posts: 7043
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| Posted: Sun Mar 18, 2012 8:22 am Post subject: |
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Well, in hopefully non-technical terms, you choose one to operate first, then send its output into the second, and the second then finally outputs to the soundcard.
"route_policy duplicate" is not the best way - see my ~/.asoundrc |
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187
n00b
Joined: 30 Sep 2003
Posts: 10
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| Posted: Sun Mar 18, 2012 3:28 pm Post subject: |
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PaulBredbury
Thanks, just a great .asoundrc to dig in.
Tried dmix + pcm.!default - speaker-test segfaults...
Now have to think why 
>Well, in hopefully non-technical terms, you choose one to operate first, then send its output into the second, and the second then finally outputs to the soundcard.
I understand it. The question is "How ?" |
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PaulBredbury
Watchman
Joined: 14 Jul 2005
Posts: 7043
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| Posted: Sun Mar 18, 2012 3:38 pm Post subject: |
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Take a look at the file I just showed you - notice how upmix_20to51 flows into lowpass_21to21, using slave.pcm
Recompile alsa-utils, and ensure that its version is the same as the output of:
| Code: | | cat /proc/asound/version |
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187
n00b
Joined: 30 Sep 2003
Posts: 10
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| Posted: Sun Mar 18, 2012 6:42 pm Post subject: |
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| PaulBredbury wrote: |
Recompile alsa-utils, and ensure that its version is the same as the output of:
| Code: | | cat /proc/asound/version |
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Yes, the versions are different.
| Code: | #eix alsa-lib
[D] media-libs/alsa-lib
Available versions: 1.0.24.1 ~1.0.25 {alisp alsa_pcm_plugins_adpcm alsa_pcpcm_plugins_extplug alsa_pcm_plugins_file alsa_pcm_plugins_hooks alsa_pcm_pluginsa_pcm_plugins_mulaw alsa_pcm_plugins_multi alsa_pcm_plugins_null alsa_pcm_plugi
Installed versions: 1.0.25-r1(19:16:05 18.03.2012)
#cat /proc/asound/version
Advanced Linux Sound Architecture Driver Version 1.0.24. |
As I understand, in-kernel alsa drivers are older then external ones ?
Trying to mask 1.0.25* versions to downgrade alsa-libs doesn't help:
| Code: | # emerge -pvD alsa-lib
These are the packages that would be merged, in order:
Calculating dependencies... done!
[ebuild R #] media-libs/alsa-lib-1.0.25-r1 USE="-alisp -debug -doc -python" 0 kB
Total: 1 package (1 reinstall), Size of downloads: 0 kB
The following mask changes are necessary to proceed:
#required by alsa-lib (argument)
# /etc/portage/package.mask:
=media-libs/alsa-lib-1.0.25-r1 |
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PaulBredbury
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Joined: 14 Jul 2005
Posts: 7043
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| Posted: Sun Mar 18, 2012 6:52 pm Post subject: |
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It is alsa-utils that provides /usr/bin/speaker-test
Versions shown here. |
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187
n00b
Joined: 30 Sep 2003
Posts: 10
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| Posted: Sun Mar 25, 2012 10:10 am Post subject: |
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PaulBredbury,
No, it's not because of speaker-test.
aplay, alsaplay, ... - segfaults too.
If I remove bidings for channels 2-5 in pcm.dmixed, everything is ok. With all bindings - segfaults. |
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PaulBredbury
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Joined: 14 Jul 2005
Posts: 7043
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| Posted: Sun Mar 25, 2012 10:15 am Post subject: |
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You are unique, AFAIK, with this problem.
Obvious thing to check: Recompile alsa-driver for your current kernel. |
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187
n00b
Joined: 30 Sep 2003
Posts: 10
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| Posted: Sun Mar 25, 2012 10:39 am Post subject: |
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I'm using in-kernel alsa.
Maybe the problem is here ?
cat /proc/asound/oss/sndstat
Sound Driver:3.8.1a-980706 (ALSA v1.0.24 emulation code)
Kernel: Linux storage 3.2.12-gentoo #1 SMP PREEMPT Sun Mar 25 01:49:36 MSK 2012 x86_64
Config options: 0
Installed drivers:
Type 10: ALSA emulation
Card config:
Audigy SE [SB0570] at 0xe800 irq 21
HDA ATI SB at 0xfcff4000 irq 16
HDA NVidia at 0xfe87c000 irq 19
Audio devices: NOT ENABLED IN CONFIG
Synth devices: NOT ENABLED IN CONFIG
Midi devices:
0: CA0106 MPU-401 (UART)
Timers:
31: system timer
Mixers: NOT ENABLED IN CONFIG |
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PaulBredbury
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Joined: 14 Jul 2005
Posts: 7043
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| Posted: Sun Mar 25, 2012 10:44 am Post subject: |
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| 187 wrote: | | cat /proc/asound/oss/sndstat |
You're using ALSA, not OSS (i.e. ALSA's emulation of OSS), so why are you looking at OSS? |
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187
n00b
Joined: 30 Sep 2003
Posts: 10
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| Posted: Sun Mar 25, 2012 10:56 am Post subject: |
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Just trying everything from http://www.gentoo.org/doc/en/alsa-guide.xml ...
When I'm switching from card 0 to card 1, device 0, ... - everything is ok...
cat /proc/asoundcards
0 [CA0106 ]: CA0106 - CA0106
Audigy SE [SB0570] at 0xe800 irq 21
1 [SB ]: HDA-Intel - HDA ATI SB
HDA ATI SB at 0xfcff4000 irq 16
2 [NVidia ]: HDA-Intel - HDA NVidia
HDA NVidia at 0xfe87c000 irq 19 |
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187
n00b
Joined: 30 Sep 2003
Posts: 10
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| Posted: Sun Mar 25, 2012 5:39 pm Post subject: |
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Oh $#$CK !!!!!
I spent 2 days for it !!!
Instead of using
card 0
device 0
bindings
0 0
1 1
2 2
...
I have to use:
card 0
device 0
bindings
0 0
1 1
card 0
device 1
bindings
0 0
1 1
...
Now it's time to think how to modify .asoundrc for it.
But only the next weekend  |
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187
n00b
Joined: 30 Sep 2003
Posts: 10
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| Posted: Sun Apr 08, 2012 12:33 am Post subject: |
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Ok, maybe it helps somebody.
Not very beautiful, but works.
.asoundrc:
pcm.ca0106 {
type hw
card 0 #1
device 0
# channels 6
}
ctl.ca0106 {
type hw
card 0 #1
device 0
}
ctl.equal {
type equal;
channels 6;
}
pcm.plugequal {
type equal;
# slave.pcm "plug:dmix";
slave.pcm "quad3";
channels 6;
}
pcm.equal {
# Or if you want the equalizer to be your
# default soundcard uncomment the following
# line and comment the above line.
# pcm.!default {
type plug;
slave.pcm plugequal;
}
pcm.quad {
type multi
slaves.a.pcm "hw:0,0"
slaves.a.channels 2
slaves.b.pcm "hw:0,1"
slaves.b.channels 2
slaves.c.pcm "hw:0,2"
slaves.c.channels 2
bindings.0.slave a
bindings.0.channel 0
bindings.1.slave a
bindings.1.channel 1
bindings.2.slave b
bindings.2.channel 0
bindings.3.slave b
bindings.3.channel 1
bindings.4.slave c
bindings.4.channel 0
bindings.5.slave c
bindings.5.channel 1
}
pcm.quad2 {
type route
slave.pcm "quad"
ttable.0.0 1
ttable.1.1 1
ttable.0.2 1
ttable.1.3 1
ttable.0.4 1
ttable.1.5 1
}
pcm.quad3 {
type plug
slave.pcm "quad2"
}
speaker-test -c 2 -D equal -t wav |
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