Friends
This is a bit off topic, as it is really a Debian system management question
I wish to deploy Jack on my system from source.
I have built jack with only warnings using
https://jackaudio.org/faq/build_info.html
Paying attention to the caveats on that page I need to remove the
packaged Jackd.
I am on a debian based system and `apt remove jackd` wants to remove all
my programmes that depend on Jack (fair enough), but naturally that is
not what I want.
How do I move the packaged jack aside without also moving aside all the
programmes I wish to use with Jack?
cheers
Worik
--
If not me then who? If not now then when? If not here then where?
So, here I stand, I can do no other
root(a)worik.org 021-1680650, (03) 4821804 Aotearoa (New Zealand)
Dear list members,
I'm quite new to Jack and just subscribed to this mailing list.
First, let me say a warm Hello to everyone!
*Now to my problem.*
Since I upgraded Kubuntu 20.04 LTS to 22.04 (and also to 22.10), the sound
I hear is distorted. Even when the sound source is very quiet, the sound is
distorted. As if somewhere, the input signal is way too high.
I tried a few different settings in the Jack Audio Connection Kit, at no
avail.
Of course, I did ample research at Brother Google and found seemingly
similar problems. The advice that was given there, was either not
applicable to my situation, or was far beyond my skills to actually digg
that far into my Linux OS (I'm a chemistry teacher at a Dutch high school,
not an IT professional ;-).
Thus made me decide to ask for help here!
My soundcard is a Focusrite Scarlett 2i2, The version of the software is
the following:
jackd: 5+nmu1; jackd2 & libjack-jackd2-0: 1.9.21; qjackctl: 0.9.7-1
Below that is the output of the Messages in QjackCtl. Maybe and hopefully,
that some skilled eye finds some occurring error ...
Thanks in advance !!!
--
नमस्ते (Namasté),
Ulrich
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thing.
Thinking a lot about less and less, and forgetting the Love we
bring "
[Grateful Dead, in: 'Althea']
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Mijn blog: ✡ theskepticaltheist.eu ✡
Hello,
I've been gigging for years with a carefully fine-tuned manjaro box where I run jack with 4ms "internal" latency (-r 48000 -p 64 -n 3).
With my Presonus Audiobox 1818VSL, that leads to a roundtrip latency of ~5.7ms (as measured by jack_iodelay), which I'm very happy with.
Now tried replacing my 1818VSL with a Soundcraft ui24r, same jack settings. The roundtrip latency jumps to a rather unimpressive 9.9ms!
So the "added latency" is almost 3.5 bigger with the Soundcraft. That's a pity, because this really is a nice machine otherwise...
Is it expected to find such enormous differences between interfaces - or did I just forget the -Xmagical parameter that will fix it all?
Any idea welcome, I'd love so much to love this gear! ;-)
Thanks,
Matthieu
Hi Jonathan, thank you very much. What I need to do is relatively simple, I
think. I need to do a program that allows you to monitor your voice on your
headphones without latency, and which is compatible with different devices,
i.e., mac, windows, and android. Currently I do this using qjackCtl on my
mac and it works fine, but on a windows machine I have I get latency. So I
would like to learn how to handle jack from the command line to see if I'm
able to create a program which is user friendly, to implement this on
different devices.
Thank you for your help, I will search for information with the resources
you gave me.
On Mon, Dec 12, 2022 at 8:00 AM <jackaudio-request(a)lists.linuxaudio.org>
wrote:
> Send JackAudio mailing list submissions to
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> When replying, please edit your Subject line so it is more specific
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>
> Today's Topics:
>
> 1. Re: Hi, I'm new to JackAudio (Jonathan Woithe)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Mon, 12 Dec 2022 18:32:54 +1030
> From: Jonathan Woithe <jwoithe(a)just42.net>
> To: Rodrigo Yanez <rypptc(a)gmail.com>
> Cc: jackaudio(a)lists.linuxaudio.org
> Subject: Re: [Jackaudio] Hi, I'm new to JackAudio
> Message-ID: <Y5bgLlE3PaVznXDN(a)marvin.atrad.com.au>
> Content-Type: text/plain; charset=us-ascii
>
> Hi Rodrigo
>
> On Thu, Dec 08, 2022 at 07:51:53PM -0300, Rodrigo Yanez wrote:
> > I'm new to this mailing list and I don't know how to view previous mails
> > to check if what I'm going to ask is already on the mailing list.
>
> You can access an archive of previous posts at
>
> https://lists.linuxaudio.org/archives/jackaudio/
>
> Admittedly this is not directly searchable.
>
> > I would like to learn how to use JackAudio from the command line. I
> would
> > appreciate if you could let me know if there is a tutorial to familiarize
> > myself with JackAudio commands.
>
> You may like to start with the FAQs at
>
> https://jackaudio.org/faq/
>
> along with the rest of the information available from
>
> https://jackaudio.org/
>
> The wiki[1] linked from the above page may also be useful.
>
> It is difficult to be specific without knowing what you wish to do and the
> hardware platform and operating system you will be using.
>
> Regards
> jonathan
>
> [1] https://github.com/jackaudio/jackaudio.github.com/wiki
>
>
> ------------------------------
>
> Subject: Digest Footer
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> ------------------------------
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> End of JackAudio Digest, Vol 32, Issue 2
> ****************************************
>
Hello, fellow Jack developers.
I am currently writing a jack client which is loaded from within the
unity3d game engine. It's supposed to work like this: Every time, jack
requests audio, unity3d generates it. This is done in order to bypass
the unity3d audio renderer and use the audio in different applications
instead.
Technically, everything works fine so far. When the software is started,
either from within the unity3d editor or directly as a compiled unity3d
application, the client appears in QJackCtl and I can route the channels
to wherever I want and even hear the audio.
BUT: the client randomly disables. At some point during runtime (both in
the built version and directly from the editor) it happens, that the
routing disconnects itself, and I am unable to reconnect it. When I try,
I get the message "Cannot connect ports owned by inactive clients:
"Unity" is not active".
This behavior seems to be very unpredictable, sometimes it happens after
just a second, sometimes it runs fine for over a minute or two.
Sometimes it does not even happen (or I did not wait long enough).
I have experienced this behavior both writing my own framework or by
using the JackSharp framework. The behavior also does not change when
uninstalling pulseaudio (which was sort of a last guess on our end).
The same behavior occurs when I use jack with a dummy driver. The
connection is established and randomly breaks down again. (although
obviously I can't hear the sound).
Interestingly: when I use the framework as a standalone version,
everything seems to work fine. Therefore, it kind of seems obvious, that
it has to have to do something with Unity or the fact, that the
framework is called from a different thread or something like that.
However, Unity does not report any problems.
What I can see in the QJackCtl Log: The exact moment the problem occurs,
the kPortRegistrationOff Method is called on all ports. It looks like
the server disables all ports, then tries to deactivate the client and
therefore destroying all the ports. It eventually proceeds to tell, that
the client was destroyed successfully and that's it.
I have implemented all the callbacks that are available from the API (at
least all that i think where usefull) but all I get is, that the
framework receives the jack_on_info_shutdown method is called. This
method is passed a const char argument which is supposed to hold the
reason, but all it says is : "JACK server has been closed". Which it is
not. It is still running.
At this point, I am out of ideas of what to do to narrow down the problem.
I have tested other applications (like Reaper) and they work fine.
I am using Ubuntu 20.04, both on low-latency or generic kernel > 5.14
I use the latest version of jack2 (as of Dec 22)
I know all this sounds very vague and overly complex, but I have no idea
what else to look for or which information may be necessary to further
investigate the problem.
Any help at all is highly appreciated.
Thank you all very much
Have a nice day
Benny
Hi, I hope I'm not spamming. I'm new to this mailing list and I don't know
how to view previous mails to check if what I'm going to ask is already on
the mailing list. I would like to learn how to use JackAudio from the
command line. I would appreciate if you could let me know if there is a
tutorial to familiarize myself with JackAudio commands.
Thank you very much.
Rodrigo
White noise is, in general, due to format mismatch. I mean data types,
sample rate, number of channels etc...
I can see 2 causes
* Jack should be queried for the format by the application. If you have
the problem with many, it is not the case
* jack relay on drivers that return wrong informations or no
information or a default information. Do you have a "layer" between the
drivers (alsa oss etc...) and jack?
On Mon, 2022-11-28 at 09:14 +0100, Patrick Pouget wrote:
> White noise is, in general, due to format mismatch. I mean data
> types, sample rate, number of channels etc...
>
> I can see 2 causes
> * Jack should be queried for the format by the application. If you
> have the problem with many, it is not the case
> * jack relay on drivers that return wrong informations or no
> information or a default information. Do you have a "layer" between
> the drivers (alsa oss etc...) and jack?
>
>
>
> On Mon, 2022-11-28 at 09:03 +0500, Fabio G wrote:
> > Hello to all!undefined
> >
> > I am experimenting with audio production under Linux Mint 20.3
> > (based on Ubuntu 20.04). I managed to install a low latency kernel,
> > then I have installed JACK, and Qsynth, following the steps
> > described in this tutorial:
> > http://www.tedfelix.com/linux/linux-midi.html
> >
> > Everything seems to work fine if I use Qsynth and pulseaudio: I use
> > the vmpk simple virtual keyboard, and I have good output sound.
> > I have also tested JACK, as suggested in the tutorial using
> >
> > > $ jack-play test.wav
> >
> > and I hear the right clean output.
> > However, when I tell Qsynth to use JACK, I have a lot of noise.
> > When I hit a key I have "white noise" for few milliseconds instead
> > of the key sound, and only when it fades I have a little bit of the
> > note that I was supposed to play.
> > I have the same "white noise" problem is I use Rose Garden.
> > I have tried to change the sample rate and the frames/period
> > settings, and also the Timeout, in JACK, but the problem stays the
> > same.
> >
> > Thank you in advance for any help you can give.
> >
> > Best,
> >
> > Fabio
> > _______________________________________________
> > JackAudio mailing list
> > JackAudio(a)lists.linuxaudio.org
> > https://lists.linuxaudio.org/listinfo/jackaudio
>
Hello to all!<https://sound.stackexchange.com/posts/51899/timeline>
I am experimenting with audio production under Linux Mint 20.3 (based on
Ubuntu 20.04). I managed to install a low latency kernel, then I have
installed JACK, and Qsynth, following the steps described in this tutorial:
<http://www.tedfelix.com/linux/linux-midi.html>
http://www.tedfelix.com/linux/linux-midi.html
<http://www.tedfelix.com/linux/linux-midi.html>Everything seems to work
fine if I use Qsynth and pulseaudio: I use the vmpk simple virtual
keyboard, and I have good output sound.
I have also tested JACK, as suggested in the tutorial using
$ jack-play test.wav
and I hear the right clean output.
However, when I tell Qsynth to use JACK, I have a lot of noise. When I
hit a key I have "white noise" for few milliseconds instead of the key
sound, and only when it fades I have a little bit of the note that I was
supposed to play.
I have the same "white noise" problem is I use Rose Garden.
I have tried to change the sample rate and the frames/period settings,
and also the Timeout, in JACK, but the problem stays the same.
Thank you in advance for any help you can give.
Best,
Fabio
Group,
I have a sound card with 8 in 10 out. And Windows as you know groups them
in stereo pairs.
I want to as simply as possible route audio from ins 1(pair 1 L), 2(pair 1
R), 3(pair 2 L) etc. etc. to a stereo pair out. Something that is
persistent with a reboot. So that a mono in is routed to both the outputs
of a stereo pair.
Is this possible with JackAudio?
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