Linux-audio-user

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20627 discussions

Still doubt about frames/period and other related settings with Pipewire-jack

by Lorenzo Sutton

Hi LAU, I have now switched to pipewire on my main laptop, with an overall positive experience especially JACK-aware applications typically working 'out of the box' and (more or less) co-existing with other 'desktop' applications (I might talk about some caveats in a different thread). Something which I still can't totally work out though is jack frames/period (aka buffer size aka 'quantum') and its management. For 'everyday' use I keep this at 1024 (which I think is the default) but in some cases I want to push it down even to 128, and I must say that with recent versions of pipewire and with a reasonable 'cpu settings' (I have a tuxedo machine and it has its own cpu thingy) this actually works quite well. What I'm still not understanding completely is how to best manage the frames/period setting. Pre-pipewire in this use case I'd have dedicated qjackctl presets and just select the desired frames/period one for the sound device of interest, restart jack and be good to go. Now with Pipewire it seemed that this would be handled via pw-metadata and setting the clock.force-quantum value (I even made myself a script and then a little python-tk 'gui' for this and setting the sample rate). Up to recently indeed all of the previous preset-related settings in qjackctl (most notably sound device, sample rate, frames/period and periods/buffer) where disabled, but then now _only_ the frames/period setting dropdown seems to be available again and selectable. And indeed jack software (e.g. Ardour) seems to report that buffer size set in qjackcrl. But then if I do: pw-metadata -n settings 0 I see 1024 for clock.quantum and 0 for clock.force-quantum Explicitly setting clock.force-quantum also works. So I'm a bit confused. It seems the idea is to be able to change buffer size 'on the fly' or at least without restarting applications (e.g. in Ardour I _did_ have to disconnect and reconnect to JACK-pipewire, but without closing/reopening). Then I remember lots of discussions and advice about setting, for instance, the periods/buffer to 3 for USB sound devices etc. etc. With Pipewire we don't care about this any more? I also had a couple of instances where Ardour complained about the session being at 48000 but jack running at 44100 when actually it was running (reportedly) at 48000 - but then this is another matter, maybe. Hopefully getting insight on this could be helpful to other LAU 'transitioning' to Pipewire[-jack] :-) Lorenzo

6 months

Pipe organs effect the sound of their halls simply by existing

by David W. Jones

<https://phys.org/news/2024-11-pipe-auto-tune-effect-largest.html> I still don't have a house large enough for a pipe organ. ☹️ --- David W. Jones gnome(a)hawaii.rr.com exploring the landscape of god http://dancingtreefrog.com Sent from my Android device with F/LOSS K-9 Mail.

6 months, 2 weeks

Realtime-Kernel patch merged to mainline kernel after 20 years...

by Tobias Küchel

Cheers to Ingo Molnar! I am not sure how many users are interested in such news, since there might be still a linux-audio-dev community that I am not part of anymore. Nevertheless, it amuses me that basically half my life ago, I struggled and tested and read tons of stuff, invested a lot of time to get some nice audio stuff going on linux and some rather crappy hardware... and now, 20 years later, the foundation to all of it - a real-time kernel - did not disappear but was developed and maintained until the eagle has landed. Again, cheers to Ingo and all that contributed! Yours, Tobias.

6 months, 3 weeks

Re: A web-based sound maker

by Mario Lang

"David W. Jones" <gnome(a)hawaii.rr.com> writes: > https://draw.audio/ Also saw that on HN today. In the comments, there was another fun web audio link: https://roland50.studio/ -- CYa, ⡍⠁⠗⠊⠕

6 months, 3 weeks

Bach, Mozart or jazz: Scientists provide a quantitative measure of variability in music pieces

by David W. Jones

<https://phys.org/news/2024-11-bach-mozart-jazz-scientists-quantitative.html> --- David W. Jones gnome(a)hawaii.rr.com exploring the landscape of god http://dancingtreefrog.com Sent from my Android device with F/LOSS K-9 Mail.

7 months

Behringer FCB1010, or similar

by Worik

Friends I am looking for a MIDI foot pedal board for use with my LV2 simulators (https://github.com/worikgh/120Proof.git) I am considering the Behringer FCB1010 but i am naturally unsure if it is suitable I see on the interweb that it has all sorts of "banks" that can be programmed, but that interests me not What I care about is can I address it from a Linux box, see the MIDI events. Has anybody any experience with this, or recommendations for another product? I am currently using a SINCO pedal from Aliexpress.com that is great, but only has four switches I am keen on more options, and especially the expression peda pedals Worik Sent from Proton Mail Android

7 months

[ANN] Qtractor 1.4.0 - A Halloween'24 Release

by Rui Nuno Capela

Hello again, Qtractor 1.4.0 (halloween'24) is out! Change-log: - Improved color contrast on track and clip title labels, when given track foreground and background colors are too similar in lightness. - Clip/Split now also applies to multiple selected clips, on any other track than current, if the split point (play-head) is found within. - Clip Merge/Export... audio clips now taking the internal audio resolution (ie. 64 frames/period), independent to former JACK/Pipewire buffer-size/period. - New Clip Mute state property introduced. - New MIDI clip tool option: Normalize / Compress. - Prepping up next development cycle (Qt >= 6.8) Description: Qtractor [1] is an audio/MIDI multi-track sequencer application written in C++ with the Qt framework [2]. Target platform is Linux, where the Jack Audio Connection Kit (JACK [3]) for audio and the Advanced Linux Sound Architecture (ALSA [4]) for MIDI are the main infrastructures to evolve as a fairly-featured Linux desktop audio workstation GUI, specially dedicated to the personal home-studio. Website: https://qtractor.org https://qtractor.sourceforge.io http://qtractor.sourceforge.net Project page: https://sourceforge.net/projects/qtractor Downloads: https://sourceforge.net/projects/qtractor/files - source tarball: https://download.sf.net/qtractor/qtractor-1.4.0.tar.gz - source package (openSUSE Tubleweed): https://download.sf.net/qtractor/qtractor-1.4.0-6.1.rncbc.suse.src.rpm - binary package (openSUSE Tubleweed): https://download.sf.net/qtractor/qtractor-1.4.0-6.1.rncbc.suse.x86_64.rpm - AppImage [7] package: https://download.sf.net/qtractor/qtractor-1.4.0-6.1.x86_64.AppImage - Flatpak [8] package (thanks Hubert Figuière): https://flathub.org/apps/details/org.rncbc.qtractor Git repos: https://git.code.sf.net/p/qtractor/code https://github.com/rncbc/qtractor.git https://gitlab.com/rncbc/qtractor.git https://codeberg.org/rncbc/qtractor.git Wiki: https://sourceforge.net/p/qtractor/wiki/ - static rendering: https://qtractor.org/doc http://qtractor.sourceforge.net/doc https://qtractor.sourceforge.io/doc - user manual & how-to's: https://download.sf.net/qtractor/qtractor-manual-and-howtos.epub https://download.sf.net/qtractor/qtractor-manual-and-howtos.pdf License: Qtractor [1] is free, open-source Linux Audio [5] software, distributed under the terms of the GNU General Public License (GPL [6]) version 2 or later. References: [1] Qtractor - An audio/MIDI multi-track sequencer https://qtractor.org https://qtractor.sourceforge.io http://qtractor.sourceforge.net [2] Qt framework, C++ class library and tools for cross-platform application and UI development https://qt.io/ [3] JACK Audio Connection Kit https://jackaudio.org [4] ALSA, Advanced Linux Sound Architecture https://www.alsa-project.org/ [5] Linux Audio consortium of libre software for audio-related work https://linuxaudio.org [6] GPL - GNU General Public License https://www.gnu.org/copyleft/gpl.html [7] AppImage, Linux apps that run anywhere https://appimage.org/ [8] Flatpak, next-generation technology for building and distributing desktop applications on Linux https://flatpak.org/ See also: https://www.rncbc.org/drupal/node/2685 Cheers && Keep having (lotsa) fun! - - - rncbc aka Rui Nuno Capela

7 months, 1 week

[ANN] Vee One Suite 1.1.3 - A Halloween'24 Release

by Rui Nuno Capela

Greetings (from the crypt), The 'Vee One Suite', the so called 'gang-of-four' 'old-school' software instruments, * synthv1 [1] as a polyphonic subtractive synthesizer; * samplv1 [2] a polyphonic sampler synthesizer; * drumkv1 [3] as yet another drum-kit sampler; * padthv1 [4] a polyphonic additive synthesizer. Are here released for the spooky Halloween'24 evening... All creepy delivered in dual form: - a pure stand-alone JACK client with JACK-session [5], NSM (Non/New Session Management [6]) and both JACK MIDI and ALSA MIDI [7] input support; - a LV2 instrument plug-in [8]. Change-log: - Prepping up next development cycle (Qt >= 6.8) The 'Vee One Suite' are free, open-source Linux Audio [10] software, distributed under the terms of the GNU General Public License (GPL) [11] version 2 or later. **synthv1 - an old-school polyphonic synthesizer [1] ** synthv1 1.1.3 (halloween'24) is out! synthv1 is an old-school all-digital 4-oscillator subtractive polyphonic synthesizer with stereo fx. LV2 URI: http://synthv1.sourceforge.net/lv2 website: https://synthv1.sourceforge.io http://synthv1.sourceforge.net project page: https://sourceforge.net/projects/synthv1 downloads: https://sourceforge.net/projects/synthv1/files - source tarball: https://download.sf.net/synthv1/synthv1-1.1.3.tar.gz - source package: https://download.sf.net/synthv1/synthv1-1.1.3-5.1.rncbc.suse.src.rpm - binary packages (openSUSE Tumbleweed): https://download.sf.net/synthv1/synthv1-jack-1.1.3-5.1.rncbc.suse.x86_84.rpm https://download.sf.net/synthv1/synthv1-lv2-1.1.3-5.1.rncbc.suse.x86_84.rpm - AppImage [9] package (JACK stand-alone only): https://download.sf.net/synthv1/synthv1-jack-1.1.3-5.1.x86_64.AppImage git repos: https://git.code.sf.net/p/synthv1/code https://github.com/rncbc/synthv1.git https://gitlab.com/rncbc/synthv1.git https://codeberg.org/rncbc/synthv1.git **samplv1 - an old-school polyphonic sampler [2]** samplv1 1.1.3 (halloween'24) is out! samplv1 is an old-school polyphonic sampler synthesizer with stereo fx. LV2 URI: http://samplv1.sourceforge.net/lv2 website: https://samplv1.sourceforge.io http://samplv1.sourceforge.net project page: https://sourceforge.net/projects/samplv1 downloads: https://sourceforge.net/projects/samplv1/files - source tarball: https://download.sf.net/samplv1/samplv1-1.1.3.tar.gz - source package: https://download.sf.net/samplv1/samplv1-1.1.3-5.1.rncbc.suse.src.rpm - binary package (openSUSE Tumbleweed): https://download.sf.net/samplv1/samplv1-jack-1.1.3-5.1.rncbc.suse.x86_84.rpm https://download.sf.net/samplv1/samplv1-lv2-1.1.3-5.1.rncbc.suse.x86_84.rpm - AppImage [9] package (JACK stand-alone only): https://download.sf.net/samplv1/samplv1-jack-1.1.3-5.1.x86_64.AppImage git repos: https://git.code.sf.net/p/samplv1/code https://github.com/rncbc/samplv1.git https://gitlab.com/rncbc/samplv1.git https://codeberg.org/rncbc/samplv1.git **drumkv1 - an old-school drum-kit sampler [3]** drumkv1 1.1.3 (halloween'24) is out! drumkv1 is an old-school drum-kit sampler synthesizer with stereo fx. LV2 URI: http://drumkv1.sourceforge.net/lv2 website: https://drumkv1.sourceforge.io http://drumkv1.sourceforge.net project page: https://sourceforge.net/projects/samplv1 downloads: https://sourceforge.net/projects/drumkv1/files - source tarball: https://download.sf.net/drumkv1/drumkv1-1.1.3.tar.gz - source package: https://download.sf.net/drumkv1/drumkv1-1.1.3-5.1.rncbc.suse.src.rpm - binary package (openSUSE Tumbleweed): https://download.sf.net/drumkv1/drumkv1-jack-1.1.3-5.1.rncbc.suse.x86_84.rpm https://download.sf.net/drumkv1/drumkv1-lv2-1.1.3-5.1.rncbc.suse.x86_84.rpm - AppImage [9] package (JACK stand-alone only): https://download.sf.net/drumkv1/drumkv1-jack-1.1.3-5.1.x86_64.AppImage git repos: https://git.code.sf.net/p/drumkv1/code https://github.com/rncbc/drumkv1.git https://gitlab.com/rncbc/drumkv1.git https://codeberg.org/rncbc/drumkv1.git **padthv1 - an old-school polyphonic additive synthesizer [4]** padthv1 1.1.3 (halloween'24) is out! padthv1 is an old-school polyphonic additive synthesizer with stereo fx. padthv1 is based on the PADsynth algorithm by Paul Nasca, as a special variant of additive synthesis. LV2 URI: http://padthv1.sourceforge.net/lv2 website: http://padthv1.sourceforge.net https://padthv1.sourceforge.io project page: https://sourceforge.net/projects/padthv1 downloads: https://sourceforge.net/projects/padthv1/files - source tarball: https://download.sf.net/padthv1/padthv1-1.1.3.tar.gz - source package: https://download.sf.net/padthv1/padthv1-1.1.3-5.1.rncbc.suse.src.rpm - binary package (openSUSE Tumbleweed): https://download.sf.net/padthv1/padthv1-jack-1.1.3-5.1.rncbc.suse.x86_84.rpm https://download.sf.net/padthv1/padthv1-lv2-1.1.3-5.1.rncbc.suse.x86_84.rpm - AppImage [9] package (JACK stand-alone only): https://download.sf.net/padthv1/padthv1-jack-1.1.3-5.1.x86_64.AppImage git repos: https://git.code.sf.net/p/padthv1/code https://github.com/rncbc/padthv1.git https://gitlab.com/rncbc/padthv1.git https://codeberg.org/rncbc/padthv1.git References: [1] synthv1 - an old-school polyphonic synthesizer https://synthv1.sourceforge.io http://synthv1.sourceforge.net [2] samplv1 - an old-school polyphonic sampler https://samplv1.sourceforge.io http://samplv1.sourceforge.net [3] drumkv1 - an old-school drum-kit sampler https://drumkv1.sourceforge.io http://drumkv1.sourceforge.net [4] padthv1 - an old-school polyphonic additive synthesizer https://padthv1.sourceforge.io http://padthv1.sourceforge.net [5] JACK Audio Connection Kit https://jackaudio.org/ [6] NSM, Non Session Management (legacy) http://non.tuxfamily.org/nsm/ New Session Manager https://new-session-manager.jackaudio.org/ [7] ALSA, Advanced Linux Sound Architecture https://www.alsa-project.org/ [8] LV2, Audio Plugin Standard, the extensible successor of LADSPA https://lv2plug.in/ [9] AppImage, Linux apps that run anywhere https://appimage.org/ [10] Linux Audio consortium of libre software for audio-related work https://linuxaudio.org [11] GNU General Public License https://www.gnu.org/copyleft/gpl.html See also: https://www.rncbc.org/drupal/node/2684 Enjoy the treats! - - - rncbc aka. Rui Nuno Capela

7 months, 1 week

[music] Song for piano and flute

by Jeanette C.

Hey hey, and here's the second one. This time it's a "proper composition", with more of a late 19th century feel. A more positive and intense piece as well. https://youtu.be/SukYCNZ82LU The piano had been played months before the flute could be recorded. Due to time considerations several takes had to be comp'ed, which you can hear. My apologies. Next time, there will hopefully be more time to forego that practise. Best wishes and, mainly, enjoy, Jeanette -- * Website: http://juliencoder.de - for summer is a state of sound * Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g * Audiobombs: https://www.audiobombs.com/users/jeanette_c * GitHub: https://github.com/jeanette-c I used to think I had the answers to everything But now I know ... :) <3 (Britney Spears)

7 months, 1 week

[ANN] QjackCtl 1.0.3 - An Autumn'24 Release

by Rui Nuno Capela

Hi everyone! QjackCtl 1.0.3 (autumn'24) is out! QjackCtl [1] is an aged yet modern, not so 'simple' anymore, Qt [2] application to control the JACK [3] sound server, for the Linux Audio [4] infrastructure. Change-log: - Long missing D-Bus method slot added: "reset" (dbus-send --system / org.rncbc.qjackctl.reset). - Graph: Node reference positioning changed to the top-left corner, improving the base snapping-to-grid perception. - Prepping up next development cycle (Qt >= 6.8) Website: https://qjackctl.sourceforge.io http://qjackctl.sourceforge.net Project page: https://sourceforge.net/projects/qjackctl Downloads: https://sourceforge.net/projects/qjackctl/files - source tarball: https://download.sf.net/qjackctl/qjackctl-1.0.3.tar.gz - source package: https://download.sf.net/qjackctl/qjackctl-1.0.3-4.1.rncbc.suse.src.rpm - binary packages: https://download.sf.net/qjackctl/qjackctl-1.0.3-4.1.rncbc.suse.x86_64.rpm - AppImage [6] package: https://download.sf.net/qjackctl/qjackctl-1.0.3-4.1.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://codeberg.com/rncbc/qjackctl.git License: QjackCtl [1] is free, open-source Linux Audio [4] software, distributed under the terms of the GNU General Public License (GPL) version 2 or later [5]. References: [1] QjackCtl - A JACK Audio Connection Kit Qt GUI Interface https://qjackctl.sourceforge.io [2] Qt framework, C++ class library and tools for cross-platform application and UI development https://qt.io/ [3] JACK Audio Connection Kit https://jackaudio.org [4] Linux Audio consortium of libre software for audio-related work https://linuxaudio.org [5] GPL - GNU General Public License https://www.gnu.org/copyleft/gpl.html [6] AppImage, Linux apps that run anywhere https://appimage.org/ See also: https://www.rncbc.org/drupal/node/2683 Enjoy! - - - rncbc aka Rui Nuno Capela

7 months, 1 week

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Linux-audio-user