How do I split out a Multichannel Ouput into individual inputs and ouputs
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How do I split out a Multichannel Ouput into individual inputs and ouputs
I have a Roland Studio Capture plugged into Ubuntu 4.15.0-128-generic and it registers in the sound controls as "Multichannel Output" and "Multichannel Input". I can hear system sounds and music but I can't select individual output channels or individual input channels. Input does not work at all - I can't hear myself speaking into the mic.
I have tried the JACK Audio Connection Kit, which allowed me to get hear my input from the mic back through the studio capture:
However, this stops the audio working in everything else. I cannot hear music etc. When I use Bitwig, it is somehow able to differentiate between the various inputs and outputs of the Studio Capture using ALSA. How does it do this? Do I need to write a custom ALSA configuration to split the inputs and ouputs? Or does it go further than that?
Thanks for reading.
I have tried the JACK Audio Connection Kit, which allowed me to get hear my input from the mic back through the studio capture:
However, this stops the audio working in everything else. I cannot hear music etc. When I use Bitwig, it is somehow able to differentiate between the various inputs and outputs of the Studio Capture using ALSA. How does it do this? Do I need to write a custom ALSA configuration to split the inputs and ouputs? Or does it go further than that?
Thanks for reading.
- bluebell
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Re: How do I split out a Multichannel Ouput into individual inputs and ouputs
That's probably not a multichannel problem but the old problem with co-existence of Pulseaudio and JACK. There are many solutions. Mine is http://marzen.de/Holger/pulseaudio_and_jack/
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Re: How do I split out a Multichannel Ouput into individual inputs and ouputs
I can't unfortunately offer you a complete solution, but I recently wanted to map two of my audio interface's four outputs as one stereo out, because Pulseaudio thinks it is a 4.0 surround out (which for example puts all sounds coming from behind in games to the two "rear" channels, and I can't hear them), and this Archwiki page has lots of helpful examples: https://wiki.archlinux.org/index.php/Pu ... o/Examples
I found the solution to my problem there.
I found the solution to my problem there.
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Re: How do I split out a Multichannel Ouput into individual inputs and ouputs
So I've tried your suggestion of setting up jack playback and capture ports but I'm still unable to hear any sound. On the left hand side if the Jack connections panel, if I connect system capture_1 to system playback_1, I can hear myself talking into the mic via my USB sound card.bluebell wrote: ↑Wed Jan 27, 2021 11:47 am That's probably not a multichannel problem but the old problem with co-existence of Pulseaudio and JACK. There are many solutions. Mine is http://marzen.de/Holger/pulseaudio_and_jack/
How can I also get it to send audio from applications?
Thanks, I've tried this but still no joy.kirjis wrote: ↑Wed Jan 27, 2021 12:55 pm I can't unfortunately offer you a complete solution, but I recently wanted to map two of my audio interface's four outputs as one stereo out, because Pulseaudio thinks it is a 4.0 surround out (which for example puts all sounds coming from behind in games to the two "rear" channels, and I can't hear them), and this Archwiki page has lots of helpful examples: https://wiki.archlinux.org/index.php/Pu ... o/Examples
I found the solution to my problem there.
Re: How do I split out a Multichannel Ouput into individual inputs and ouputs
One thing that occasionally still trips me up is that on the Pulseaudio side, the Jack sink output has to be selected if Jack is running. So if I have this situation:
...I can't hear anything. The selected output is my virtual stereo output for the Presonus (actual four outputs are on the left), and I should have the one on the right (Jack sink) selected. If Jack is not running, however, this is what I'll be using, and the Jack sink is not visible.Bandcamp: https://kum1k4k1.bandcamp.com/ | Mastodon: @kirjis@polyglot.city
Reaper - Melda plugins - EndeavourOS | Clevo NH77DBQ 17" laptop - Presonus 2|6 - Focal Alpha 80 - Quad ERA-1
Re: How do I split out a Multichannel Ouput into individual inputs and ouputs
Thaks for the input kirjis. When I run QJackCtl I do not have a Jack sink option. How have you enabled jack_sink? .asoundrc or something?
Re: How do I split out a Multichannel Ouput into individual inputs and ouputs
Omg, I got this working with your suggestion kirjis. I created input bridges in Ubuntu Studio and suddenly can hear music. Thanks a lot!