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-   -   Pulseaudio Crossover Rack - multi-way crossover design & implementation with linux (https://www.diyaudio.com/forums/pc-based/330273-pulseaudio-crossover-rack-multi-crossover-design-implementation-linux.html)

von Ah 6th June 2021 01:00 AM

I really like the simplicity and elegance of PaXoR. It has been very stable since I started using it. My open baffle 2way speakers sound wonderful when turned up. :D

However I have been completely stumped by occasional pops in the playback. They only occur when PaXoR is activated. I’ve managed to get the system playing well enough that the pops are very infrequent and I’ve accepted them as inevitable at this point.

Something with squeezelite does not agree with PaXoR, but I’ve yet to isolate what is going wrong.

Perhaps the pending changeover to CamillaDSP will help. Regardless, thanks to Tfive for a great product.

Tfive 10th June 2021 03:43 PM

Quote:

Originally Posted by armigo (https://www.diyaudio.com/forums/pc-based/330273-pulseaudio-crossover-rack-multi-crossover-design-implementation-linux-post6681005.html#post6681005)
Hello,
I have a question. I setup a crossover and really worked great. However, I want to use the crossover on my roon bridge and roon only accepts ASLA outputs is there any way to simulate PaXoverRack.input as an ASLA output so I can adress it with roon?


Sorry for the delay - once again the forum decided not to send out email notifications for this thread anymore :/


I don't know about other distros but linux mint has an ALSA device named "pulse" which can be used.

Tfive 10th June 2021 03:45 PM

Quote:

Originally Posted by von Ah (https://www.diyaudio.com/forums/pc-based/330273-pulseaudio-crossover-rack-multi-crossover-design-implementation-linux-post6681643.html#post6681643)
I really like the simplicity and elegance of PaXoR. It has been very stable since I started using it. My open baffle 2way speakers sound wonderful when turned up. :D

However I have been completely stumped by occasional pops in the playback. They only occur when PaXoR is activated. Iíve managed to get the system playing well enough that the pops are very infrequent and Iíve accepted them as inevitable at this point.

Something with squeezelite does not agree with PaXoR, but Iíve yet to isolate what is going wrong.

Perhaps the pending changeover to CamillaDSP will help. Regardless, thanks to Tfive for a great product.


Appreciated!


Regarding the pops... I don't get any pops or crackles on faster machines but still sometimes the synchronization between different paths throught the crossover is lost. Had I known in advance I had probably written a monolythic dsp engine with N inputs and M outputs back then, just what camillaDSP provides now but probably not so elegant. Had no time to continue on Pulseaudio Crossover NG in the last weeks but the project is still on my todo list.

duncan2 10th June 2021 04:30 PM

On Manjaro (Arch ) roonbridge build files has--install socket by default systemctl -- global enable pulseaudio.socket + there is an upgrade .

All Arch type programming can be changed by user---and "destroyed " if not careful.

I only have ALSA installed though but along with a full range of libraries -compatibility-additional plugins etc-etc-etc.

A very long list of Pulseaudio exists if I want it.

armigo 10th June 2021 04:46 PM

Quote:

Originally Posted by duncan2
On Manjaro (Arch ) roonbridge build files has--install socket by default systemctl -- global enable pulseaudio.socket + there is an upgrade .

All Arch type programming can be changed by user---and "destroyed " if not careful.

I only have ALSA installed though but along with a full range of libraries -compatibility-additional plugins etc-etc-etc.

A very long list of Pulseaudio exists if I want it.


I don't quite understand. Is there an install opinion for roon bridge to enable pulse audio when installing roon bridge?

That sounds like exactly what I am looking for but I couldn't find any documentation on install opinions could you maybe point me in the right direction? Or what would be the option to install with pulseaudio enabled?


I'm sorry about all the questions but I've been trying to figure this out for ages now.

Tfive 11th June 2021 01:04 PM

What distribution are you on? Whats the output of "aplay -L" in the console?

And please ignore stuff from Mr. (Mrs? :D) duncan2, he never posted anything remotely meaningful in this thread, just rambling about Arch linux all the time and confusing people...

armigo 11th June 2021 03:09 PM

I am running ubuntu 21.04 on a pi4. pulse comes up when I run aplay -L but the problem is roon seems to only recognize physical devices or in other words the "CARD"entries as shown by aplay -L. I think it would be necessary to trick roon into thinking that the pulse alsa device is a physical device.

I am sorry don't I want to bother you too much with this it basically a issue with roon. Your programm works flawlessly when I use librespot to stream spotify to my pi. Unfortunately the roon forum hasn't been very helpful people there are just like "pulseaudio has bad audio quality" ... which makes little sense.

Thanks a lot

phofman 11th June 2021 05:01 PM

Quote:

Roon seems to only recognize physical devices or in other words the "CARD"entries as shown by aplay -L. I think it would be necessary to trick roon into thinking that the pulse alsa device is a physical device.
If that's really the case, it just shows the disadvantage of GUI-only configuration. Even the soundcard entry must be converted to a regular alsa device string by Roon. If the GUI allowed entering this string directly (as some override option), you could enter any PCM device defined in the alsa chain. BTW java in linux has the very same problem, the javasound alsa driver reads only the soundcards entries, not the PCM devices and there is no override of the device string. It clearly shows these projects are designed by people with very little linux experience.

armigo 11th June 2021 05:12 PM

I found a solution that isn't perfect but it works. I just reroute the sink to a loopback device using CamilaDSP. I know I could just do the whole process with Camilla but I simply didn't have the patience yet to get my head around the syntax for it. Also this way I know when you come out with a Camilla Version I won't have this problem any longer.

Thank you everyone.


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