Using and configuring ALSA plugins dmix and dsnoop for stereo play and capture The 2019 Stack Overflow Developer Survey Results Are In Announcing the arrival of Valued Associate #679: Cesar Manara Planned maintenance scheduled April 17/18, 2019 at 00:00UTC (8:00pm US/Eastern) 2019 Community Moderator Election ResultsTrying to improve sound quality with ALSAHow to simultaneously play sounds on 4.0 surround system using aplayUnderstanding Mixing of sounds in ALSAFocusrite Scarlett on Linux input mapping?Pipe/Mix Line In to Output in PulseAudioALSA - Traktor Audio 2 - How to split front and rear stereo channels / How to debug dmixHow do I use ALSA or PulseAudio to remap stereo source to an 8-channel PCM and lower the volume?Understanding what “channels”, “buffer_size”, “period_size”, “bindings” and “ipc_key” stand for in .asoundrcalsa pre-amp volumeALSA mono configuration not working

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Using and configuring ALSA plugins dmix and dsnoop for stereo play and capture



The 2019 Stack Overflow Developer Survey Results Are In
Announcing the arrival of Valued Associate #679: Cesar Manara
Planned maintenance scheduled April 17/18, 2019 at 00:00UTC (8:00pm US/Eastern)
2019 Community Moderator Election ResultsTrying to improve sound quality with ALSAHow to simultaneously play sounds on 4.0 surround system using aplayUnderstanding Mixing of sounds in ALSAFocusrite Scarlett on Linux input mapping?Pipe/Mix Line In to Output in PulseAudioALSA - Traktor Audio 2 - How to split front and rear stereo channels / How to debug dmixHow do I use ALSA or PulseAudio to remap stereo source to an 8-channel PCM and lower the volume?Understanding what “channels”, “buffer_size”, “period_size”, “bindings” and “ipc_key” stand for in .asoundrcalsa pre-amp volumeALSA mono configuration not working



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0















I installed a new PCI based soundcard in my PC. It has 8 S/PDIF based I/O pairs with each line numbered 1 to 8 for input as well as output. And I'm trying to use lines 3-8 for input (mics) and 3-8 for output (play) in stereo with :



  • line 3 + line 4 = channel 1 (both input and output),

  • line 5 + line 6 = channel 2 (both input and output),

  • line 7 + line 8 = channel 3 (both input and output).

So, I created the following .asoundrc:



pcm.!default 
type plug
slave
pcm "hw:1,0"



ctl.!default
type hw
card 1



pcm.play_out_44
type dmix
ipc_key 1201
ipc_key_add_uid true
slave
pcm "hw:1,0"
channels 2
rate 44100
format S32_LE
buffer_size 4096
period_size 1024



pcm.rec_in_44
type dsnoop
ipc_key 1210
slave
pcm "hw:1,0"
channels 2
rate 44100
buffer_size 4096
period_size 1024




pcm.outch1
type plug
slave
pcm "play_out_44"
bindings
2 2
3 3

hint.description "PCI Card Stereo output/playback channel 1 (from output ports 3 & 4)"



pcm.inch1
type plug
slave
pcm "rec_in_44"
bindings
2 2
3 3

hint.description "PCI Card Stereo input/capture channel 1 (from input ports 3 & 4)"



pcm.outch2
type plug
slave
pcm "play_out_44"
bindings
4 4
5 5

hint.description "PCI Card Stereo output/playback channel 2 (from output ports 5 & 6)"



pcm.inch2
type plug
slave
pcm "rec_in_44"
bindings
4 4
5 5

hint.description "PCI Card Stereo input/capture channel 2 (from input ports 5 & 6)"



pcm.outch3
type plug
slave
pcm "play_out_44"
bindings
6 6
7 7

hint.description "PCI Card Stereo output/playback channel 3 (from output ports 7 & 8)"



pcm.inch3
type plug
slave
pcm "rec_in_44"
bindings
6 6
7 7

hint.description "PCI Card Stereo input/capture channel 3 (from input ports 7 & 8)"




As mentioned here, I created a new dmix type to suit my configuration. But when I try to open Audacity to try and play and capture, none of inch1, inch2, inch3, outch1, outch2, outch3 are available in the recording device or playback device list!



How do I modify or create a .asoundrc for stereo play and stereo capture on my device?










share|improve this question

















This question has an open bounty worth +50
reputation from skrowten_hermit ending ending at 2019-04-17 17:10:30Z">in 4 days.


The question is widely applicable to a large audience. A detailed canonical answer is required to address all the concerns.


Kindly provide a detailed explanation on how to fix or an alternate ALSA configuration.






















    0















    I installed a new PCI based soundcard in my PC. It has 8 S/PDIF based I/O pairs with each line numbered 1 to 8 for input as well as output. And I'm trying to use lines 3-8 for input (mics) and 3-8 for output (play) in stereo with :



    • line 3 + line 4 = channel 1 (both input and output),

    • line 5 + line 6 = channel 2 (both input and output),

    • line 7 + line 8 = channel 3 (both input and output).

    So, I created the following .asoundrc:



    pcm.!default 
    type plug
    slave
    pcm "hw:1,0"



    ctl.!default
    type hw
    card 1



    pcm.play_out_44
    type dmix
    ipc_key 1201
    ipc_key_add_uid true
    slave
    pcm "hw:1,0"
    channels 2
    rate 44100
    format S32_LE
    buffer_size 4096
    period_size 1024



    pcm.rec_in_44
    type dsnoop
    ipc_key 1210
    slave
    pcm "hw:1,0"
    channels 2
    rate 44100
    buffer_size 4096
    period_size 1024




    pcm.outch1
    type plug
    slave
    pcm "play_out_44"
    bindings
    2 2
    3 3

    hint.description "PCI Card Stereo output/playback channel 1 (from output ports 3 & 4)"



    pcm.inch1
    type plug
    slave
    pcm "rec_in_44"
    bindings
    2 2
    3 3

    hint.description "PCI Card Stereo input/capture channel 1 (from input ports 3 & 4)"



    pcm.outch2
    type plug
    slave
    pcm "play_out_44"
    bindings
    4 4
    5 5

    hint.description "PCI Card Stereo output/playback channel 2 (from output ports 5 & 6)"



    pcm.inch2
    type plug
    slave
    pcm "rec_in_44"
    bindings
    4 4
    5 5

    hint.description "PCI Card Stereo input/capture channel 2 (from input ports 5 & 6)"



    pcm.outch3
    type plug
    slave
    pcm "play_out_44"
    bindings
    6 6
    7 7

    hint.description "PCI Card Stereo output/playback channel 3 (from output ports 7 & 8)"



    pcm.inch3
    type plug
    slave
    pcm "rec_in_44"
    bindings
    6 6
    7 7

    hint.description "PCI Card Stereo input/capture channel 3 (from input ports 7 & 8)"




    As mentioned here, I created a new dmix type to suit my configuration. But when I try to open Audacity to try and play and capture, none of inch1, inch2, inch3, outch1, outch2, outch3 are available in the recording device or playback device list!



    How do I modify or create a .asoundrc for stereo play and stereo capture on my device?










    share|improve this question

















    This question has an open bounty worth +50
    reputation from skrowten_hermit ending ending at 2019-04-17 17:10:30Z">in 4 days.


    The question is widely applicable to a large audience. A detailed canonical answer is required to address all the concerns.


    Kindly provide a detailed explanation on how to fix or an alternate ALSA configuration.


















      0












      0








      0








      I installed a new PCI based soundcard in my PC. It has 8 S/PDIF based I/O pairs with each line numbered 1 to 8 for input as well as output. And I'm trying to use lines 3-8 for input (mics) and 3-8 for output (play) in stereo with :



      • line 3 + line 4 = channel 1 (both input and output),

      • line 5 + line 6 = channel 2 (both input and output),

      • line 7 + line 8 = channel 3 (both input and output).

      So, I created the following .asoundrc:



      pcm.!default 
      type plug
      slave
      pcm "hw:1,0"



      ctl.!default
      type hw
      card 1



      pcm.play_out_44
      type dmix
      ipc_key 1201
      ipc_key_add_uid true
      slave
      pcm "hw:1,0"
      channels 2
      rate 44100
      format S32_LE
      buffer_size 4096
      period_size 1024



      pcm.rec_in_44
      type dsnoop
      ipc_key 1210
      slave
      pcm "hw:1,0"
      channels 2
      rate 44100
      buffer_size 4096
      period_size 1024




      pcm.outch1
      type plug
      slave
      pcm "play_out_44"
      bindings
      2 2
      3 3

      hint.description "PCI Card Stereo output/playback channel 1 (from output ports 3 & 4)"



      pcm.inch1
      type plug
      slave
      pcm "rec_in_44"
      bindings
      2 2
      3 3

      hint.description "PCI Card Stereo input/capture channel 1 (from input ports 3 & 4)"



      pcm.outch2
      type plug
      slave
      pcm "play_out_44"
      bindings
      4 4
      5 5

      hint.description "PCI Card Stereo output/playback channel 2 (from output ports 5 & 6)"



      pcm.inch2
      type plug
      slave
      pcm "rec_in_44"
      bindings
      4 4
      5 5

      hint.description "PCI Card Stereo input/capture channel 2 (from input ports 5 & 6)"



      pcm.outch3
      type plug
      slave
      pcm "play_out_44"
      bindings
      6 6
      7 7

      hint.description "PCI Card Stereo output/playback channel 3 (from output ports 7 & 8)"



      pcm.inch3
      type plug
      slave
      pcm "rec_in_44"
      bindings
      6 6
      7 7

      hint.description "PCI Card Stereo input/capture channel 3 (from input ports 7 & 8)"




      As mentioned here, I created a new dmix type to suit my configuration. But when I try to open Audacity to try and play and capture, none of inch1, inch2, inch3, outch1, outch2, outch3 are available in the recording device or playback device list!



      How do I modify or create a .asoundrc for stereo play and stereo capture on my device?










      share|improve this question
















      I installed a new PCI based soundcard in my PC. It has 8 S/PDIF based I/O pairs with each line numbered 1 to 8 for input as well as output. And I'm trying to use lines 3-8 for input (mics) and 3-8 for output (play) in stereo with :



      • line 3 + line 4 = channel 1 (both input and output),

      • line 5 + line 6 = channel 2 (both input and output),

      • line 7 + line 8 = channel 3 (both input and output).

      So, I created the following .asoundrc:



      pcm.!default 
      type plug
      slave
      pcm "hw:1,0"



      ctl.!default
      type hw
      card 1



      pcm.play_out_44
      type dmix
      ipc_key 1201
      ipc_key_add_uid true
      slave
      pcm "hw:1,0"
      channels 2
      rate 44100
      format S32_LE
      buffer_size 4096
      period_size 1024



      pcm.rec_in_44
      type dsnoop
      ipc_key 1210
      slave
      pcm "hw:1,0"
      channels 2
      rate 44100
      buffer_size 4096
      period_size 1024




      pcm.outch1
      type plug
      slave
      pcm "play_out_44"
      bindings
      2 2
      3 3

      hint.description "PCI Card Stereo output/playback channel 1 (from output ports 3 & 4)"



      pcm.inch1
      type plug
      slave
      pcm "rec_in_44"
      bindings
      2 2
      3 3

      hint.description "PCI Card Stereo input/capture channel 1 (from input ports 3 & 4)"



      pcm.outch2
      type plug
      slave
      pcm "play_out_44"
      bindings
      4 4
      5 5

      hint.description "PCI Card Stereo output/playback channel 2 (from output ports 5 & 6)"



      pcm.inch2
      type plug
      slave
      pcm "rec_in_44"
      bindings
      4 4
      5 5

      hint.description "PCI Card Stereo input/capture channel 2 (from input ports 5 & 6)"



      pcm.outch3
      type plug
      slave
      pcm "play_out_44"
      bindings
      6 6
      7 7

      hint.description "PCI Card Stereo output/playback channel 3 (from output ports 7 & 8)"



      pcm.inch3
      type plug
      slave
      pcm "rec_in_44"
      bindings
      6 6
      7 7

      hint.description "PCI Card Stereo input/capture channel 3 (from input ports 7 & 8)"




      As mentioned here, I created a new dmix type to suit my configuration. But when I try to open Audacity to try and play and capture, none of inch1, inch2, inch3, outch1, outch2, outch3 are available in the recording device or playback device list!



      How do I modify or create a .asoundrc for stereo play and stereo capture on my device?







      audio alsa recording






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Apr 10 at 5:53







      skrowten_hermit

















      asked Apr 8 at 8:01









      skrowten_hermitskrowten_hermit

      2131420




      2131420






      This question has an open bounty worth +50
      reputation from skrowten_hermit ending ending at 2019-04-17 17:10:30Z">in 4 days.


      The question is widely applicable to a large audience. A detailed canonical answer is required to address all the concerns.


      Kindly provide a detailed explanation on how to fix or an alternate ALSA configuration.








      This question has an open bounty worth +50
      reputation from skrowten_hermit ending ending at 2019-04-17 17:10:30Z">in 4 days.


      The question is widely applicable to a large audience. A detailed canonical answer is required to address all the concerns.


      Kindly provide a detailed explanation on how to fix or an alternate ALSA configuration.






















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