Linux-audio-user September 2018

linux-audio-user@lists.linuxaudio.org

51 participants
42 discussions

by Will Godfrey

... Yet Another Sparrow Apart from the new list of helpers attached to the 'About' window, there is little visible change for most users, but the command line has now been greatly extended. Full details are in doc/Yoshimi_1.5.9_features.txt As usual, there still is much to do, but progress is steady. -- Will J Godfrey http://www.musically.me.uk Say you have a poem and I have a tune. Exchange them and we can both have a poem, a tune, and a song.

5 years, 7 months

[ANN] QjackCtl 0.5.4 - An Early Autumn'18 Release

by Rui Nuno Capela

That's it! QjackCtl 0.5.4 (early-autumn'18) is out! QjackCtl [1] is a(n ageing but still modern, maybe not so 'simple' anymore) Qt [2] application to control the JACK [3] sound server, for the Linux Audio [5] infrastructure. Website: https://qjackctl.sourceforge.io http://qjackctl.sourceforge.net Project page: http://sourceforge.net/projects/qjackctl Downloads: http://sourceforge.net/projects/qjackctl/files - source tarball: http://download.sf.net/qjackctl/qjackctl-0.5.4.tar.gz - source package (openSUSE Tumbleweed): http://download.sf.net/qjackctl/qjackctl-0.5.4-33.rncbc.suse.src.rpm - binary package (openSUSE Tumbleweed): http://download.sf.net/qjackctl/qjackctl-0.5.4-33.rncbc.suse.x86_64.rpm - AppImage [7] package: http://download.sf.net/qjackctl/qjackctl-0.5.4-5.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: - Graph port-type colors are now configurable (cf. menu View > Colors. - Make Graph nodes (ie. client boxes) transparent for yet some eye-candiness ;). Also keep the (Graph) current selection across port (dis)connections. - Drawing patchbay connector lines as (bezier) curves is now a difinitive and fixed feature (as long as no moreremains from the so called "Cambric explosion era" are still lurking in there). - AppStream metadata updated to be the most compliant with latest freedesktop.org specification and recommendation. - Graph auto-layout improvement for brand new node clients. - Avoid showing setup warning when no server settings have changed. - Fixed JACK D-Bus settings for MIDI driver parameter. License: QjackCtl [1] is free, open-source Linux Audio [5] software, distributed under the terms of the GNU General Public License (GPL) version 2 or later [6]. See also: http://www.rncbc.org/drupal/node/1941 References: [1] QjackCtl - A JACK Audio Connection Kit Qt GUI Interface https://qjackctl.sourceforge.io 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] AppImage, Linux apps that run anywhere http://appimage.org/ Enjoy && have fun! (what else?) -- rncbc aka Rui Nuno Capela

5 years, 7 months

free/libre/open online music distribution

by Wayne DePrince Jr.

ahoy all, i have been doing some research into free/libre software and/or services for music distribution. my preferences are a *customizable* static HTML+CSS+JavaScript site (e.g. like the current crop of static site generators https://staticsitegenerators.net ) that i can host myself which allows streaming and free/libre downloads of releases/tracks. basically i am looking for a simple static site generator that is album/track/audio aware, though i am open to any solutions available. my current list is small and all save one require a full-blown CMS+DB install: * Pushtape http://pushtape.com - currently only Drupal based * CASH Music platform http://cashmusic.org - PHP+DB requirement for self hosting - also available as a free/beer service hosted by CASH Music with embeddable widgets - currently no streaming support * WordPress - there are some freemium plugins for hosting a music store, etc. but again i am trying to avoid the setup+maintenance of a full CMS * indieTorrent https://indietorrent.org - online only service - very interesting/cool manifesto https://indietorrent.org/docs/manifesto/ - not lots of activity but still kicking https://indietorrent.org/4rum/viewtopic.php?f=1&p=39#p39 - not specifically for self hosting but as it is open source it could be done others (ReverbNation, Jamendo, Magnatune, Bandcamp, Bandpage, thesixtyone, etc) are all either non-libre, non-self hosting, etc. if anyone has any items to add to this list, experience with a service, homemade solutions, etc. i would appreciate them sharing it. i figure since we all go through various amounts of trouble to follow our principles/passions/whatever by using free/libre tools when making music, sharing it would be no different. thanks, w

5 years, 7 months

Streaming a show with linux?

by Mac

Thinking about setting up a live streaming radio show for a local theater group. Figured I'd start here with my research. Does anyone do this with Linux? What app do you use? How about video? Regards, Mac On Fri, Sep 14, 2018, 7:35 AM Kai Hendry <hendry(a)iki.fi> wrote: > Hi there, > > On my T480s on Archlinux I often have issues with my USB microphone (h1 > handy recorder): > Sep 14 19:00:57 t480s kernel: retire_capture_urb: 2477 callbacks suppressed > Sep 14 19:01:02 t480s kernel: retire_capture_urb: 2480 callbacks suppressed > Sep 14 19:01:07 t480s kernel: retire_capture_urb: 2479 callbacks suppressed > > Resulting in just noise / garbage when recording with an ffmpeg/pulseaudio > based script: > https://github.com/kaihendry/recordmydesktop2.0/blob/master/x11capture > > https://s.natalian.org/2018-09-14/noise.mp4 > > It's difficult to reproduce, but I have managed to experience the issue > again and again on stable kernels, e.g. > Linux t480s 4.18.6-arch1-1-ARCH #1 SMP PREEMPT Wed Sep 5 11:54:09 UTC 2018 > x86_64 GNU/Linux > > But not (yet) upon linux-lts 4.14.69-1 aka "LTS". > > Any tips how I should proceed here? > https://www.kernel.org/doc/linux/REPORTING-BUGS is a bit overwhelming. > > Many thanks, > _______________________________________________ > Linux-audio-user mailing list > Linux-audio-user(a)lists.linuxaudio.org > https://lists.linuxaudio.org/listinfo/linux-audio-user >

5 years, 7 months

Yoshimi Command Line

by Will Godfrey

I have a question for any people who make use of this. Recent work means that in the latest builds some deep access into the synth engines is now possible with the status of all context steps being echoed to the prompt line so you know where you are. However this can get very long, so I'm wondering if it would be better to have a status line followed by a normal "yoshimi>" prompt. As has already been pointed out, this would then tend to orphan the last command actioned from the prompt. Currently, using minimised commands from the top level: 's p add voi env fre on' reports: 'Part 1 Kit 1 Add Voice 1 Frequency Enable Env Value 1.000000' and gives a new prompt line: 'yoshimi Part 1 on, Addvoice on, freq Envel on>' Bear in mind that the report is what you did, and the prompt is where you are (although there is considerable overlap). If you now do: 's at t 80' the report is: 'Part 1 Kit 1 Add Voice 1 Amp Env A dt Value 80.000000' but the prompt line is still: 'yoshimi Part 1 on, Addvoice 1 on, amp Envel>' We need to tidy up the responses, and intend to shorten the report line to just the control changed and its new value, as the steps to reach it will be in the prompt. Or should they be? That's my question. Another consideration is that the prompt is specific to the CLI but reports might be directed to the GUI console! Also, as well as blind users, we have at least one sighted user who runs graphically but sends commands via the CLI wherever possible. Finally, I'm sending this to both LAU and Yoshimi's own list as this is getting into unfamiliar territory and I would like to get the widest possible user views. -- Will J Godfrey http://www.musically.me.uk Say you have a poem and I have a tune. Exchange them and we can both have a poem, a tune, and a song.

5 years, 7 months

[ANN] Open Source Music FM Synthesizer Challenge starts September 15th, 2018

by Christopher Arndt

Calling out to all musicians and Open Source aficionados! Open Source Audio Meeting Cologne [1] proudly presents: The OPEN SOURCE MUSIC FM SYNTHESIZER CHALLENGE https://fmchallenge.osamc.de/ What: Install one or several of the Open Source FM Synthesizers we selected [2], make an awesome track using only these synthesizers as sound sources, upload [3] it to archive.org under a Creative Commons license and submit it [4] into the competition. When: The competition starts on *September 15th, 2018* and runs for one month until the end of *October 14th, 2018*. Who: *Everybody* (i.e. every natural person) can enter the competition. All selected synthesizers are Free Software [5] and getting started with music production using Open Source software [6] is easy and free to everyone! Winning: The winner of the competition is selected by *public vote* [7]. Voting starts on *October 15th, 2018* and is open for *ten days*. The entry receiving the most points wins and will be presented at the second *Sonoj Convention* [8] in Cologne on the weekend of October 27th/28th. Second and third places will be awarded as well. The winners will only receive fame and glory, but the community as a whole also wins! Before you enter the competition, be sure to check out the detailed rules [9]! Please share this announcement to all interested parties. If you wish to sponsor prices for the competition winners, please contact the organizer! *Let's make some awesome music using Open Source FM Synthesizers!* Christopher Arndt Open Source Audio Meeting Cologne https://fmchallenge.osamc.de/ fmchallenge(a)osamc.de [1] https://osamc.de/ [2] https://fmchallenge.osamc.de/fmsynths/ [3] https://archive.org/create/ [4] https://fmchallenge.osamc.de/submit/ [5] https://www.gnu.org/philosophy/free-sw.html [6] https://libremusicproduction.com/ [7] https://fmchallenge.osamc.de/vote/ [8] https://sonoj.org/ [9] https://fmchallenge.osamc.de/rules/

5 years, 7 months

Re: [LAU] retire_capture_urb: xxxx callbacks suppressed

by Kai Hendry

Couldn't see anything obvious before those messages. journalctl | grep -B1 "callbacks suppressed" &> /tmp/logs.txt https://s.natalian.org/2018-09-15/logs.txt

5 years, 7 months

performance problems after kernel/microcode update ?

by Niklas Reppel

Hi, i recently updated my Arch linux system, to to the following version: Linux 4.18.6-arch1-1-ARCH #1 SMP PREEMPT Afterwards, i noticed that something has changed regarding the realtime permissions and that i had to install a new package called 'realtime-priviliges', which i never needed before, and subsequently add my main user to the 'realtime' group. In that wake, i updated the processor microcode, which i didn't use at all before (there always was some error message during bootup, but nothing else). After being able to start JACK in realtime again, i felt that there was a significant loss of performance. Things that didn't cause any dropouts before now start to crackle and gristle (as a sidenote, i mostly use SuperCollider to make sound). Also, and this puzzled me especially, there were dropouts, but no XRuns ... normally, when i push the system to the limits, i get XRuns, that'd be expected. But now, it's dropouts without, and they start way earlier. My machine has an Intel(R) Core(TM) i7-4600U CPU @ 2.10GHz Processor if that info is of user for anyone ... Anybody else noticed something like that recently ? Best, nik -- Niklas Reppel www.parkellipsen.de

5 years, 7 months

Recommended USB Audio Interface

by Mailing JS

Hi, what would, in your opinion, be a recommended USB Audio Interface for multitrack studio recording? In the past, I was happy with M-Audio Delta 10/10. It was using a PCI-Extention Card. Now, I'm searching for a replacement using USB. It could have fewer IO-Ports and I need no Effects-Processing on the card. Important is, if possible, out of the box connecting via jackd and channel adjusting via alsa mixer. Thanx for hints, Joerg -- --------------------------

5 years, 7 months

Dexed stuck notes

by Mark Raynsford

Hello! I've been using Dexed for about 18 months now, and a couple of versions ago, it suddenly started behaving badly. Essentially, notes get "stuck" on (as if they've not received a NOTE-OFF event), and even sending ALL-NOTES-OFF events doesn't unstick them. The only way to unstick them is to toggle the MONO switch on and off in the sequence (apparently this sends an ALL-SOUNDS-OFF event internally). I've filed a report here: https://github.com/asb2m10/dexed/issues/152 .. But it's kind of awkward to reproduce. I've only been able to get it to happen after I've gotten part way through writing a piece. I don't have this problem with any other instrument, so it does appear to be Dexed-specific. Is anyone else able to reproduce this problem? The easiest way would appear to be to grab the something.zip file attached to the bottom of the ticket and run it in Rosegarden. This assumes that you have Carla and Dexed installed (as a VST plugin). Failing that... Is anyone else this having problem with Dexed at all? I see it in all the major sequencers, and sometimes just when playing with a MIDI keyboard. -- Mark Raynsford | http://www.io7m.com

5 years, 7 months

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Linux-audio-user September 2018