Hi all,
For a sound playback system I'm putting together, based on a Raspberry Pi 3,
I'm looking to have 4 channels of input and output, and to have the system
to run automatically at startup.
For this, I'm wondering how to (best) execute zita-a2j and zita-j2a; I've
tried two methods that don't work:
1. ask Qjackctl to execute the following script after startup:
sleep 5
zita-j2a -d hw:CODEC_1
2. execute this script:
qjackctl (with auto-start)
sleep 10
zita-j2a -d hw:CODEC_1
Executing the zita-j2a manually after Qjackctl has finished starting the
jack server does work.
Any pointers greatly appreciated!
Cheers, Steven
--
Sent from: http://linux-audio.4202.n7.nabble.com/linux-audio-user-f5.html
Hi list,
I know that having different soundcards for in and out will lead to
clock deviations and is generally not a wise thing to do, but my
question is differently:
Surprisingly it works quite well with ALSA, but not so much with jack.
Both is from Pd. Jack has a plethora of settings, so this could have to
do with it and make my blanket statement above too simplistic, but I
wonder is there a general design in jack which makes it harder to rund
different cards for i/o or do i have the wrong settings? Where to look at?
m.
Fernando Lopez-Lezcano discussed the pitfalls of using the MOTU AVB
external audio interfaces with Linux in his paper [1] and also in the
keynote at LAC-19.
Let's start another thread around this card.
Fernando mentioned that different firmwares expose different issues, but
downgrading is possible. Issues are:
1. Channels are not persistent and swap around.
2. Total number of channels has been reduced in newer firmwares.
3. An endless card aquisition loop between Jack and Pulseaudio caused by
the long time the card needs to switch sampling rate.
4. Seemingly erratic behavior, opening the device fails, fails again,
again, then works suddenly.
I have a couple of questions and experiences.
Is there a table of the firmware versions somewhere (linuxaudio wiki?)
which tell me which versions has which features (removed)?
Are all the Class Compliant models having the same quirks as listed
above? For example the
MOTU UltraLite AVB versus the MOTU 624 AVB?
Is it possible to use the Thunderbolt port to connect the card to a
Linux computer?
Why can't I tell ALSA to use only the first 2, 4 whatever channels of
the device? I can only open the device if all channels are connected. Is
this always like that or is that a limitation of MOTU's implementation?
On my laptop with only one USB bus, If I connected the MOTU 624 AVB and
then another high speed usb device, the computer could not connect the
later, because the MOTU reserved all the bandwith for itself. Connecting
the other device and then the MOTU worked.
[1] http://lac.linuxaudio.org/2019/doc/lopez.pdf
Max
Hi
I like to announce a new release of GxPlugins.lv2
GxPlugins.lv2 is a set of mostly analogue guitar pedal simulations as
LV2 plugins, simulated with the guitarix ampsim (DK method) toolkit.
This release add GxBlueAmp GxClubDrive GxEternity GxLuna GxPlexi
GxSloopyBlue and GxTimRay
to the set.
I hope they may be useful for the one or the other.
Build instruction and screenshots may be found here:
https://github.com/brummer10/GxPlugins.lv2
the release tar.gz file is located here:
https://github.com/brummer10/GxPlugins.lv2/releases
Thanks goes to Olivier Humbert, Cyrus and David Runge for there
contributions to the project.
regards
hermann
Rui,
again thank you very much for this great piece of software, it's part of
my workflow for many years now and there is nothing comparable for me...
ok - I'm aging , too ... so maybe that's the reason why Qjackctl and I
fit together perfectly *lol*
all the best
Suse
----------------------------------------------------------------------
www.proggels.de
From: Rui Nuno Capela <rncbc(a)rncbc.org>
> To: LAU <linux-audio-user(a)lists.linuxaudio.org>
> Subject: [LAU] [ANN] QjackCtl 0.5.8 - A Spring'19 Release
> Message-ID: <2e349593-b402-edf5-58a5-a18d8576983b(a)rncbc.org>
> Content-Type: text/plain; charset=utf-8
>
> Howdy!
>
> ** QjackCtl - JACK Audio Connection Kit Qt GUI Interface [1] **
>
> QjackCtl 0.5.8 (spring'19) is now released!
>
> QjackCtl is a(n ageing but still, modernized) Qt [2] application to
> control the JACK [3] sound server, for the Linux Audio [4]
> infrastructure.
>
