JackAudio May 2018

jackaudio@lists.linuxaudio.org

13 participants
9 discussions

by Stefan Hellkvist

Hi list, (Sorry this question has already been discussed but the search function in the archive of the list does not work) Is anyone working on the problem of getting Jack up and running on MacOS again? I installed Jack with brew but I get these “could not handle external client request” errors which seems to be old problems from looking at search results and GitHub discussions - problems introduced when MacOS audio architecture was changed a while back. Is there any progress on these matters? Is someone working on it? I need Jack as it is a dependency to another library I would like to use but I realize that I might have to abandon MacOS as a platform in the process. Kindest regards, Stefan

5 years

Re: [Jack-Devel] AES67 / SMPTE ST 2110-30

by happy musicmaker

That is such good news. What(low cost) hardware would this development be used on to support the developers with testing/debugging and maybe even development ? * MOTU LP32 (Preferred) * MiniDSP https://www.minidsp.com/products/network-audio/avb-dg (I think MOTU's switch uses midDSP switch hardware) I hope someday it will be possible to connect 4 or more 8 channel ADAT modules (32 channels) to a PC under Ubuntu via AVB with low latency. The only option to get this done under Windows is a Focursrite DANTE based Rednet 3 right now because Thunderbolt is not really available there as well. Plan to get Rednet3, but that does not solve the Linux environment which I prefer. Would love to be able to use the Rednet 3 under Linux but since DANTE is proprietary , so unlikely. My two wishes: [a] Multi (16+) channel low latency audio I/O using ADAT audio AD/DA [b[ Bitwig supporting LV2 plugins. With those two, the Linux Audio environment would be perfect and the world a better place. *(Apology for the re-sends and ignore the previous edits. Web based Gmail is such a annoyance and un-logically structured)*

5 years, 9 months

[Jack-Devel] [ANN] The QStuff* Pre-LAC2018 Release Frenzy Hotfix!

by Rui Nuno Capela

Avast ye lads! The Qstuff* Pre-LAC2018 [7] release frenzy continues... now with a hotfix! ** QjackCtl - JACK Audio Connection Kit Qt GUI Interface [1] ** QjackCtl 0.5.1 (pre-lac2018 hotfix) is out! QjackCtl is a(n ageing but still) simple Qt [2] application to control the JACK [3] sound server, for the Linux Audio infrastructure. Website: http://qjackctl.sourceforge.net https://qjackctl.sourceforge.io Project page: http://sourceforge.net/projects/qjackctl Downloads: http://sourceforge.net/projects/qjackctl/files - source tarball: http://download.sf.net/qjackctl/qjackctl-0.5.2.tar.gz - source package: http://download.sf.net/qjackctl/qjackctl-0.5.2-31.rncbc.suse.src.rpm - binary packages: http://download.sf.net/qjackctl/qjackctl-0.5.2-31.rncbc.suse.x86_64.rpm - AppImage packages: http://download.sf.net/qjackctl/qjackctl-0.5.2-3.x86_64.AppImage Git repos: https://git.code.sf.net/p/qjackctl/code https://github.com/rncbc/qjackctl.git https://gitlab.com/rncbc/qjackctl.git https://bitbucket.com/rncbc/qjackctl.git Change-log: - Respect ALSA [4] Sequencer support option also on Graph view. - Regression to new Graph node/ports sorting comparator; also fixed multiple and many port removals, most probably causing it to crash due to double-free/delete potential. - Fixed the automatic aggregation of new Graph client nodes that are split as either input or output only (ie. system, terminal, physical or otherwise non-duplex nodes). - Added View/Zoom Range mode option to Graph tool. License: QjackCtl [1] free, open-source Linux Audio [5] software, distributed under the terms of the GNU General Public License (GPL) version 2 or later [6]. References: [1] QjackCtl - A JACK Audio Connection Kit Qt GUI Interface http://qjackctl.sourceforge.net [2] Qt framework, C++ class library and tools for cross-platform application and UI development http://qt.io/ [3] JACK Audio Connection Kit http://jackaudio.org [4] ALSA, Advanced Linux Sound Architecture http://www.alsa-project.org/ [5] Linux Audio consortium of libre software for audio-related work http://linuxaudio.org [6] GPL - GNU General Public License http://www.gnu.org/copyleft/gpl.html [7] LAC2018@c-base_Berlin, June 7–10 2018 https://lac.linuxaudio.org/2018/ See also: https://www.rncbc.org/drupal/node/1914 Enjoy && keep the fun! -- rncbc aka Rui Nuno Capela

5 years, 11 months

Re: [Jack-Devel] How to use jackd as a 'system-wide' server?

by Christophe Lohr

Le 16/05/2018 à 22:45, Chris Caudle a écrit : > I would set to the same sample rate that asterisk expects so that no > rate conversion is needed. Well, in fact Asterisk does not expect a specific sample rate. This depends of the codecs that have been negotiated with the peer for the ongoing call... By default, the sip trunk uses ilbc g729 gsm g723 ulaw codecs. The sampling rate can be 8kHz, 16kHz, or 13.3... Maybe I can tell jack to use 16kHz sampling rate, and let it convert when needed. >> Linux xaal-c 4.15.17-1-MANJARO #1 SMP PREEMPT Thu Apr 12 17:29:48 UTC >> 2018 x86_64 GNU/Linux > That has the low-latency configuration set (PREEMPT), but not the full > realtime patch (that would show PREEMPT-RT). Should be fine for most use, > but you may not be able to set to the very lowest latency settings. The > dummy backend uses 1024 sample period size by default. The use-case is about voice calls. Humans are rather tolerant about the latency of a phone call. isn't it? > What app do you have connected? The app is the speech-to-text Pocketsphinx (the code is slightly modified for my needs) Pocketsphinx uses pulseaudio as audio interface. So I need its jack source/sink plugin. So, there is no physical audio device in my system: the audio of the caller is to be passed to the STT recognition system via the audio server. Best regards Christophe

5 years, 11 months

[Jack-Devel] LAC2018 schedule and registration online!

by Linux Audio Conference

Dear all, we're happy to announce (and you might have noticed already), that the schedule for Linux Audio Conference 2018 is live! https://lac.linuxaudio.org/2018/pages/schedule Please note, that it will still be subject to slight changes! We have prepared a registration form for attendees: https://www.ak.tu-berlin.de/index.php?id=195758 Please sign up at your earliest convenience to let us know, if you're part of the conference. Also, we'd like to draw special attention to this year's keynote, which will be held by Gianfranco Ceccolini of MOD Devices: https://lac.linuxaudio.org/2018/pages/event/102/ Looking forward to seeing you in Berlin, -- Linux Audio Conference team

5 years, 11 months

[Jack-Devel] How to use jackd as a 'system-wide' server?

by Christophe Lohr

Hello, I'm looking for some advices for configuring my system. I plan to use the Jack plugin for the Asterisk PBX https://blog.russellbryant.net/2008/01/13/jack-interfaces-for-asterisk/ https://wiki.asterisk.org/wiki/display/AST/Asterisk+12+Application_JACK Since Asterisk is started as a daemon by systemd, I guess that I should also start Jackd as a system-wide server, and not within a user graphical session. In such a case, jackd does not rely on dbus, isn't it? So, how does jack clients may reach the jackd server? Is there some well known entry point, or discovering mechanisms (without dbus)? I'm lost. Any explanations are welcome ;-) Best regards Christophe

5 years, 11 months

Re: [Jack-Devel] Jackd doesn't install in Ubuntu 18.04

by Esteban Viveros

Thanks for the tip! I already filled a bug report in Ubuntu launchpad: https://bugs.launchpad.net/ubuntu/+source/jackd2/+bug/1769977 Cheers! Em ter, 8 de mai de 2018 16:09, Chris Caudle <chris(a)chriscaudle.org> escreveu: > On Tue, May 8, 2018 1:30 pm, Esteban Viveros wrote: > > That solution works, but I think better is fix Ubuntu 18.04 jackd2 > package > > to install automatically solving this libreadline6 dependency. > > Ubuntu creates their package, you should file a bug report with Ubuntu. > The jackd developers just create the original software, each distribution > creates their own installation packages. > > -- > Chris Caudle > > > -- www.estebanviveros.com

5 years, 11 months

[Jack-Devel] Jackd doesn't install in Ubuntu 18.04

by Esteban Viveros

Hi list! I don't be able to install jackd2 in new ubuntu 18.04 LTS. Os pacotes a seguir têm dependências desencontradas: jackd2 : Depende: libreadline6 (>= 6.0) mas não é instalável Recomenda: jackd2-firewire mas não será instalado How should I proceed..? Thanks -- www.estebanviveros.com

5 years, 11 months

[Jack-Devel] Will development on Jack for Windows be continuing ?

by Michael Z Freeman

Hi, I've found Jack on Windows to be very good. But its quite limited with only 4 channels. It's actually allowed me to setup, after many problems with other methods, a way of having vinyl timecode control into Mixxx through Jack with good latency (8.71ms, Mixxx recommended <10ms). I can also route a single stereo channel from Reaper into Mixxx Aux input. The setup runs very well and I've had no underuns or audio artefacts so far. So I'm actually very impressed with what Jack can do on Windows but the last release seems to have been in 2016 and I don't see any mention of adding further audio channels beyond the already existing 4. So are there plans for further releases ? Or maybe I'm missing any forked versions for windows that may be out there? Cheers and thanks for Jack ! Michael Z Freeman

5 years, 11 months

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JackAudio May 2018