JACK Audio Connection Kit with Surround Sound

I'm using Ubuntu Studio 22.04.2 LTS (64 bit version).

Also, I always use JACK Audio Connection Kit 1.9.20.

Also, I use JAMin, as a real time audio dynamic processor (to get the best high level against the environment noise).

Please, it is not a question. It is a guide to get full control of all the 8 audio channels present in the today audio cards.

1. Open a Terminal session.

2. Type:

   If you have installed "gedit":

    sudo gedit /etc/pulse/daemon.conf
   
    (The system will prompt your root password)
   

   If you have installed "mousepad":

    sudo mousepad /etc/pulse/daemon.conf
   
    (The system will prompt your root password)
   

3. Look for the line which has the following sentence:

    ; default-sample-channels = 2
   

4. Change the line value from 2 to 8 (if you have a 7.1 surround audio system):

    default-sample-channels = 8
   

5. Look for the line which has the following sentence:

   ; enable-lfe-remixing = no
   

6. Change the line value from no to yes and eliminate semicolon:

   enable-lfe-remixing = yes
   

7. If you are using jackd (Jack Audio Connections Kit), you also have to edit the file:

   /etc/pulse/default.pa
   

8. Look for the lines above the title:

   "Automatically connect sink and source if JACK server is present"
   

9. Add the following lines:

   load-module module-jack-sink
   
   load-module module-jack-source
   
   load-module module-jackdbus-detect channels=8
   

10. Restart your computer, or type:

    killall pulseaudio && pulseaudio
    

11. Now,check your PulseAudio sound system with:

    speaker-test -c8 -l1 -twhite
    

Then, you will get the following audio connections diagram (QjackCtl app):

In this way, you will be able to control all your audio cards channels.

That's all, folks!!!