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Pulseaudio Crossover Rack - multi-way crossover design & implementation with linux
Pulseaudio Crossover Rack - multi-way crossover design & implementation with linux
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Old 22nd November 2018, 09:20 AM   #11
Boden is offline Boden  Netherlands
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The standard colors (if colored at all!) for 3.5 mm output jacks on both onboard soundcards and many PCI cards are: Green: Front speakers out. Black (or dark Blue on some older boards): Rear speakers out. Orange: Center/subwoofer out. Gray: Middle speakers out.



So, to take your own screenshot: Woofer: --- Output channels: Front Left Front Right (Green Jack) Tweeter: --- Output Channels Rear Left Rear Right (Black/Dark Blue Jack)


Adding the relevant color code would simply save me having to look up the color code, that’s all..
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Old 22nd November 2018, 09:43 AM   #12
Tfive is offline Tfive  Germany
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Quote:
Originally Posted by phofman View Post
Wouldn't you consider github or gitlab?
Code is available via gitlab:
Pit Bull / ladspa-t5-plugins * GitLab
Pit Bull / PaXoverRack * GitLab

But for the website I am running my homebrew Python/pyramid based CMS which requires Python/wsgi based hosting.

Update: currently the internet connection at my home is down :/ thanks Deutsche Telekom! Hope that problem will be resolved soon, sorry for the trouble!
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Old 22nd November 2018, 12:35 PM   #13
Tfive is offline Tfive  Germany
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Yes, my internet connection and the server are up again.

I just released a version 1.2 with the requested features. Looking forward to your feedback...
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Old 22nd November 2018, 05:38 PM   #14
DRONE7 is offline DRONE7  New Zealand
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Superb !
I've taken my usb soundcard to work (shhh, don't tell the boss) and version 1.2 allows for mono sub out. That's great.

Interface is very intuitive and it only took a couple of minutes to load and chain the dsp's.

The pop-up boxes for user input error notifications (forgetting to name sink etc) are extremely helpful. This is so well thought out and user friendly.

Currently I am just testing on screen,as I haven't brought my amps and speakers to work... so I'm looking forward to tonight and trying out the audio at home.

A question...my soundcard has 5.1 output.. front,rear,centre, and sub.
When I select an output in Pulseaudio Crossover Rack for the subwoofer I can choose summing of inputs to mono but cannot select output to be sub out only.
A pop-up notification asks for 2 output channels to be configured so I need to choose centre and sub then get the option to mono.
Thus only one physical output is used but the centre output becomes redundant and unable to be used.

Is this immutable ?

Another question... The card is capable of 24/96 but the dsp seems to show PulseAudio at 16/44.1.
Can this be adjusted or is this a given ?

Thanks,
Bob
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Old 22nd November 2018, 06:14 PM   #15
Tfive is offline Tfive  Germany
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Quote:
Originally Posted by DRONE7 View Post
A question...my soundcard has 5.1 output.. front,rear,centre, and sub.
When I select an output in Pulseaudio Crossover Rack for the subwoofer I can choose summing of inputs to mono but cannot select output to be sub out only.
A pop-up notification asks for 2 output channels to be configured so I need to choose centre and sub then get the option to mono.
Thus only one physical output is used but the centre output becomes redundant and unable to be used.

Is this immutable ?
Yes, as far as I can see there is only one trick which involves remap-sink and this can only be used in two channel mode. So yes, this way you are losing one output of your soundcard. This was a surprise to me also that this hack worked with literally 10 lines of code changes. As long as there is no n-channel downmix plugin for pulseaudio available which takes two channels as input and has one output I can see no way to get around this limitation of pulseaudio at the moment.

Quote:
Originally Posted by DRONE7 View Post
Another question... The card is capable of 24/96 but the dsp seems to show PulseAudio at 16/44.1.
Can this be adjusted or is this a given ?

Thanks,
Bob
Actually I use kind of a hack to read the sampling rate of the pulseaudio server at runtime by reading it the first physical output. This is obviously the wrong way to do it as all the DSP/LADSPA stuff is done at the sampling frequency of the pulseaudio backbend which is usually configured system wide by editing /etc/pulse/daemon.conf .
Will look into this... The longer I think of this it should show both backbend and output sampling rate and format.

Last edited by Tfive; 22nd November 2018 at 06:16 PM.
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Old 24th November 2018, 09:54 AM   #16
Tfive is offline Tfive  Germany
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Just a quick note: version 1.4 was just release with some minor bugfixes and a reworked status bar now showing pulseaudio backend and output device sampling rates and formats.

Last edited by Tfive; 24th November 2018 at 09:55 AM. Reason: typo
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Old 25th November 2018, 07:21 PM   #17
DRONE7 is offline DRONE7  New Zealand
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Links and repo no longer working.....
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Old 26th November 2018, 10:09 AM   #18
Tfive is offline Tfive  Germany
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Quote:
Originally Posted by DRONE7 View Post
Links and repo no longer working.....
Sorry for the lengthy downtime. I will hopefully replace this crappy laptop with something more stable soon. Also I am back at my home now and if the laptop should crash in the next days I can restart it immediately. Will have an eye on it
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Old 26th November 2018, 09:52 PM   #19
DRONE7 is offline DRONE7  New Zealand
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Thanks for fixing the links !
I have installed 1.4 and now have my sound-card configured and connected.
So far I am testing on the workshop bench system and it all sounds very promising.

Just have to run through all the daily use scenarios (stopping starting suspending etc) to check for noises and continuity when resuming.

Once that passes I will take it inside to the main listening system.

Meanwhile I have started to plan a speaker project that will incorporate the xover-rack and eq.
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Old 27th November 2018, 06:50 AM   #20
Tfive is offline Tfive  Germany
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Quote:
Originally Posted by DRONE7 View Post
Thanks for fixing the links !
I have installed 1.4 and now have my sound-card configured and connected.
So far I am testing on the workshop bench system and it all sounds very promising.
Does that mean you'r listening to a speaker crossed over py PaXoverRack? If so, you're definitely first, man. My SCS4s are still lurking in the basement and I will have to build a 6 channel amp first to get my setup going...

If you want you can take a picture of your test setup and I will post it on the homepage as first ever system running on PaXoverRack
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