Linux-audio-dev

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[ANN] Qtractor 0.9.3 - The End of Autumn'18 Release

by Rui Nuno Capela

Finally! Qtractor 0.9.3 (end-of-autumn'18 beta) is out! All the changes that were simply 'decrastinated' for this season are as follows: - Auto-backward now skips the end-of-session location. - Audio clip time-stretching and pitch-shifting limits are now 10-fold in either direction. - Custom color (palette) theme editor introduced; color (palette) theme changes are now effective immediately, except on default. - Old deprecated Qt4 build support is no more. - Recover audio and MIDI dedicated port connections when changing any of the Metronome, Player and/or Control option settings. - Fix MIDI track (and bus) bank/program reset to none. - Anti-glitch micro-fade-in is disabled on audio clips with zero offset. - Audio and MIDI file players also stopped on Transport / Panic command. - LV2 plug-in UI GTK2 and X11 in Qt5 host native support are now disabled on default configure. - Get rid of symlink duplicates on the default plugin search paths. - According to Debian policy and guidelines, the out-of process plugin scanner (qtractor_plugin_scan) is now installed to $LIBDIR/qtractor. 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: http://qtractor.org http://qtractor.sourceforge.net https://qtractor.sourceforge.io Project page: http://sourceforge.net/projects/qtractor Downloads: http://sourceforge.net/projects/qtractor/files - source tarball: http://download.sf.net/qtractor/qtractor-0.9.3.tar.gz - source package (openSUSE Tubleweed): http://download.sf.net/qtractor/qtractor-0.9.3-38.rncbc.suse.src.rpm - binary package (openSUSE Tubleweed): http://download.sf.net/qtractor/qtractor-0.9.3-38.rncbc.suse.x86_64.rpm - AppImage [7] packages: http://download.sf.net/qtractor/qtractor-0.9.3-8.x86_64.AppImage Git repos: https://git.code.sf.net/p/qtractor/code https://github.com/rncbc/qtractor.git https://gitlab.com/rncbc/qtractor.git https://bitbucket.org/rncbc/qtractor.git Wiki (help wanted!): http://sourceforge.net/p/qtractor/wiki/ - static rendering: http://qtractor.org/doc http://qtractor.sourceforge.net/doc https://qtractor.sourceforge.io/doc - user manual & how-to's: http://download.sf.net/qtractor/qtractor-manual-and-howtos.epub http://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 http://qtractor.org http://qtractor.sourceforge.net https://qtractor.sourceforge.io [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/ See also: http://www.rncbc.org/drupal/node/1958 Enjoy && Keep thefun. -- rncbc aka Rui Nuno Capela

5 years, 10 months

[ANN] Qsampler 0.5.3 - An(other) End of Autumn'18 Release

by Rui Nuno Capela

Hello again, No more excuses left: please upgrade! Qsampler 0.5.3 (end-od-autumn'18) is released! Qsampler [1] is a LinuxSampler [2] GUI front-end application written in C++ around the Qt framework using Qt Designer [3]. Website: https://qsampler.sourceforge.io http://qsampler.sourceforge.net Project page: http://sourceforge.net/projects/qsampler Downloads: http://sourceforge.net/projects/qsampler/files - source tarball: http://download.sf.net/qsampler/qsampler-0.5.3.tar.gz http://download.sf.net/qsampler/liblscp-0.6.0.tar.gz - source package (openSUSE Tumbleweed): http://download.sf.net/qsampler/qsampler-0.5.3-27.rncbc.suse.src.rpm http://download.sf.net/qsampler/liblscp-0.6.0-24.rncbc.suse.src.rpm - binary package (openSUSE Tumbleweed): http://download.sf.net/qsampler/qsampler-0.5.3-27.rncbc.suse.x86_64.rpm http://download.sf.net/qsampler/liblscp6-0.6.0-24.rncbc.suse.x86_64.rpm http://download.sf.net/qsampler/liblscp-devel-0.6.0-24.rncbc.suse.x86_64.rpm - AppImage [6] package: http://download.sf.net/qsampler/qsampler-0.5.3-4.x86_64.AppImage Git repos: https://git.code.sf.net/p/qsampler/code https://github.com/rncbc/qsampler.git https://gitlab.com/rncbc/qsampler.git https://bitbucket.com/rncbc/qsampler.git Change-log: - Avoid saving plug-in sampler channels and related devices to regular LSCP (*.lscp) session files. - Fixed MIDI and Audio device selection on the common sampler channel settings dialog. - Old deprecated Qt4 build support is no more. - AppStream metadata updated to be the most compliant with latest freedesktop.org specification and recommendation. License: Qsampler [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]. See also: http://www.rncbc.org/drupal/node/1957 References: [1] Qsampler - A LinuxSampler Qt GUI Interface http://qsampler.sourceforge.net [2] LinuxSampler - The Linux Sampler Project A modular, streaming capable, realtime audio sampler http://www.linuxsampler.org [3] Qt framework, C++ class library and tools for cross-platform application and UI development http://qt.io/ [4] Linux Audio consortium of libre software for audio-related work http://linuxaudio.org [5] GPL - GNU General Public License http://www.gnu.org/copyleft/gpl.html [6] AppImage, Linux apps that run anywhere http://appimage.org/ Enjoy && have (lots of) fun! -- rncbc aka Rui Nuno Capela

5 years, 10 months

Berlin Linux Audio meeting @ c-base 2018-12-11

by Daniel Swärd

Hi all. On Tuesday the 12th of December it's again the meeting at c-base. Since I posted on both LAU and LAD, let's have the follow-up discussion on LAU. Cheers /Daniel

5 years, 10 months

[ANN] Qsynth 0.5.4 - An End of Autumn'18 Release

by Rui Nuno Capela

Hi everyone, There are no excuses: upgrade! Qsynth 0.5.4 (end-od-autumn'18) is out! Qsynth [1] is a FluidSynth [2] GUI front-end application written in C++ around the Qt [3] framework using Qt Designer. Website: https://qsynth.sourceforge.io http://qsynth.sourceforge.net Project page: http://sourceforge.net/projects/qsynth Downloads: http://sourceforge.net/projects/qsynth/files - source tarball: http://download.sf.net/qsynth/qsynth-0.5.4.tar.gz - source package (openSUSE Tumbleweed): http://download.sf.net/qsynth/qsynth-0.5.4-15.rncbc.suse.src.rpm - binary package (openSUSE Tumbleweed): http://download.sf.net/qsynth/qsynth-0.5.4-15.rncbc.suse.x86_64.rpm - AppImage [6] package: http://download.sf.net/qsynth/qsynth-0.5.4-6.x86_64.AppImage Git repos: https://git.code.sf.net/p/qsynth/code https://github.com/rncbc/qsynth.git https://gitlab.com/rncbc/qsynth.git https://bitbucket.com/rncbc/qsynth.git Change-log: - Reset button now also resets master Gain, Reverb and Chorus to their "factory default" values. - Fixed Reverb and Chorus effects processing when audio output peak-meters are enabled on FluidSynth API V2. - Old deprecated Qt4 build support is no more. - System tray options now subject to current desktop environment availability. License: Qsynth [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]. See also: http://www.rncbc.org/drupal/node/1956 References: [1] Qsynth - A fluidsynth Qt GUI Interface https://qsynth.sourceforge.io http://qsynth.sourceforge.net [2] FluidSynth - A SoundFont Synthesizer A real-time software synthesizer based on SoundFont 2 specifications http://www.fluidsynth.org [3] Qt framework, C++ class library and tools for cross-platform application and UI development http://qt.io/ [4] Linux Audio consortium of libre software for audio-related work http://linuxaudio.org [5] GPL - GNU General Public License http://www.gnu.org/copyleft/gpl.html [6] AppImage, Linux apps that run anywhere http://appimage.org/ Enjoy && have fun! -- rncbc aka Rui Nuno Capela

5 years, 10 months

Open Source Design (paid and pro bono design)

by David Runge

Hey all, I thought I'd spread the word about Open Source Design [1], which is a community of designers and developers that wants to improve usability of free software (never mind the name, I guess most people are not as strict about it as e.g. Richard Stallman ;-) ). A friend (hey Sam!) made me aware of this recently and I think the community can be a great opportunity to either learn about design or find someone to help your project get a facelift (or a logo, or whatever). This can be done by posting a request for a "job" (paid or unpaid) [2] on their site. Maybe it's of help to anyone here. Best, David [1] https://opensourcedesign.net/ [2] https://opensourcedesign.net/jobs/ -- https://sleepmap.de

5 years, 10 months

So in 2019, which plugin "format"?

by Gordonjcp

Hi folks, At the risk of igniting a flame war, if one were to develop softsynth plugins for Linux, what would be the "framework" of choice these days? Back in the day I wrote some using DSSI, which was a model I was pretty comfortable with. I had a look at LV2 but couldn't work out how to generate the huge incomprehensible non-human-readable "ttl" files. Where does the world stand now? -- Gordonjcp

5 years, 10 months

Is -ffast-math safe for audio?

by Will Godfrey

While testing some mixed floating point and integer calculations I found a quite surprising difference when this compiler option was set (gcc 6.x). It was clearly different at only 100 iterations and got dramatically worse with larger counts. My test routine was this: int a = 0; float b = 0; float c = 0; float inc = 0.1f; float dec = 0.05f; int it = 100; for (int i = 0; i < it; ++ i) { a = (int)truncf(b); c = b - floorf(b); b += inc; a = (int)truncf(b); c = b - floorf(b); b -= dec; } cout << "int " << a << " rem " << c << endl; My suspicion is that the difference is due to accumulated rounding errors. Curiously without the decrements the behavior with and without -ffast-math seems to be identical well into the millions. -- 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, 10 months

[ANN] QjackCtl 0.5.5 - A Black-Friday'18 Release

by Rui Nuno Capela

Wholly greetings! QjackCtl 0.5.5 (black-friday'18) is released! QjackCtl [1] is a(n ageing yet modern, 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-0.5.5.tar.gz - source package (openSUSE Tumbleweed): http://download.sf.net/qjackctl/qjackctl-0.5.5-34.rncbc.suse.src.rpm - binary package (openSUSE Tumbleweed): http://download.sf.net/qjackctl/qjackctl-0.5.5-34.rncbc.suse.x86_64.rpm - AppImage [7] package: http://download.sf.net/qjackctl/qjackctl-0.5.5-6.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: - Old deprecated Qt4 build support is no more. - Graph port sort options added as View / Sort menu. - System tray options now subject to current desktop environment availability. - Also disable Setup / Misc / Other / Save JACK server configuration to (.jackdrc) when JACK D-Bus interface is enabled. - Whether to use server synchronous mode option added to Setup / Settings / Parameters (only applied when JACK D-BUS interface is enabled). - Disable some Setup / Settings / Advanced parameters when JACK D-Bus interface is enabled and vice-versa. - Attempt to power-cycle JACK D-Bus service on demand; - Marked as probably useless anyway, old "H/W Monitor" option (-H) is now being ditched from Setup / Settings / Advanced tab. - Graph port/connections highlighting. 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/1953 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 && keep having fun! -- rncbc aka Rui Nuno Capela

5 years, 10 months

LAM

by Will Godfrey

Linux Audio Music has been dormant for a very long time, but recently I contacted the the person who hosted and ran it. The reason he closed it was because of a serious vulnerability was discovered in Rails, and he no longer had time to do the necessary upgrades. However, he has told me that he still has the entire database and the code. In his own words: "... would be happy to host and do what I can to facilitate a handoff to someone else who wants to manage it." For anyone who doesn't know, this was a relatively simple and clean site aimed specifically at providing a home for tracks composed with Linux - something rather rare! -- 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, 10 months

Github down-ish?

by Will Godfrey

I'm seeing 'can't retrieve the current commit' on several quite different projects. Anyone else seeing this? -- 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, 10 months

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Linux-audio-dev