Linux-audio-user August 2020

linux-audio-user@lists.linuxaudio.org

18 participants
17 discussions

help request: RT audio checkup and xorg's xruns

by Nicola Pandini

Hello list! I have a setup that I use in my live sets made with an ASUS N551 laptops and a NI Komplete Audio 6, which allows me to play without XRUNS at 64 frames / period with a modular approach (Qtractor, LinuxSampler, Yoshimi, SooperLooper, PureData). The whole thing runs on Debian Stretch with AVLinux 4.9.47-rt37avl2 kernel. I am quite happy with the performance of this setup, but I started having XRUNS when I added real-time video management as well. Those issues made me notice that the system runs without XRUNS only if XOrg is not stressed much, while it starts producing XRUNS when I play a video, or when I open the browser, or even when I quickly move or resize a window. I would like to understand if the problem is due to an incorrect configuration of realtime priorities, or to something that I have not yet managed to trap. I currently use these configurations: [Xorg] The video driver is i915. I read on the internet that: "If your graphic card was manufactured in 2007 and newer, try uninstalling the xserver-xorg-video-intel package and use the builtin modesetting driver (xserver-xorg-core) instead" Questions: - I uninstalled xserver-xorg-video-intel, but I still see the i915 driver: is that correct, or should I see another driver? [rtirq] RTIRQ_NAME_LIST = "snd usb i8042" RTIRQ_PRIO_HIGH = 90 RTIRQ_PRIO_DECR = 5 RTIRQ_PRIO_LOW = 51 RTIRQ_RESET_ALL = 0 RTIRQ_NON_THREADED = "rtc snd" Questions: - rtc must be in "NON_THREADED", or in "RTIRQ_NAME_LIST"? - in "RTIRQ_NAME_LIST" can I remove "usb" and put only the item that manages my USB card? Should it be xhci? - can i take i8042 off the list? - is it recommended to use RTIRQ_RESET_ALL = 1 to override all other IRQs? [jackd] jackd -P83 -dalsa -dhw: K6 -r44100 -p64 -n2 -I1 Questions: - the priority must be lower than those that are set to the IRQs by rtirq? [limits.conf] @audio - rtprio 99 # maximum realtime priority @audio - memlock unlimited # maximum locked-in-memory address space (KB) Questions: - what is the recommended value of rtprio in 2020? On the internet I find 90, 95 and 99 Can you help me do a checkup of my configuration? Thanks! -- Nicola Pandini http://nicolapandini.damai.it

4 years, 7 months

KVR August contest

by Will Godfrey

I used to take part in this every month, but it's now been nearly a year since I last contributed. However I finally had a bit of inspiration and the result is here: https://archive.org/download/20-08-folderol-submundo/20-08_folderol_Submund… I don't think I need to say which synth I'm using, however this is the first occasion where I've used MIDI-learned controls to twiddle LFO and filter settings within the engines dynamically - although it's been possible for quite a long time. Hope you like it :) -- 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.

4 years, 7 months

[ANN] Yoshimi 1.7.2 released

by Will Godfrey

In brief: In the voice editors you can now change the width and centre position of random panning. Last seen banked instrument can now be highlighted. There are three more options in LFO type. In the 'doc' directory we've added a PDF with a brief list of all CCs and NRPNs that Yoshimi recognises. All these are of course accessible to the command line. More details are in /doc/Yoshimi_1.7.2_features.txt We welcome all help and feedback. We listen and respond to suggestions and problems. Yoshimi source code is available from either: https://sourceforge.net/projects/yoshimi Or: https://github.com/Yoshimi/yoshimi Full build instructions are in 'INSTALL'. Our list archive is at: https://www.freelists.org/archive/yoshimi To post, email to: yoshimi(a)freelists.org -- 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.

4 years, 7 months

[LAA] Mamba - Virtual Midi keyboard for Jack Audio Connection Kit release 1.3

by Hermann Meyer

Hi Mamba release v1.3 is out Mamba - Virtual Midi keyboard and Midi file player/recorder https://github.com/brummer10/Mamba Mamba features * Virtual Midi Keyboard for Jack Audio Connection Kit <https://jackaudio.org/> * Including NSM <https://linuxaudio.github.io/new-session-manager/> support * Channel selector * Bank and Program selector * Keyboard mapping for qwertz, qwerty and azerty selectable from menu * PC Keyboard mapping selector from C0 to C4 * Pitchbend, Balance, Modwheel, Detune, Expression, Attack, Release, Volume and Velocity controllers * Sustain and Sostenuto switches * Midi Through: forward midi input to output * Midi input highlighting * Resizable to a full range 127 key view * Save and load Midi-files (using libsmf) * Load Midi-files on command-line * Record and play Midi-Loops * Support jack_transport to start/stop Midi-Loops * Keyboard Shortcuts * |ctrl + r| toggle Record Button * |ctrl + p| toggle Play Button * |ctrl + l| open load file dialog * |ctrl + s| open save file dialog * |ctrl + a| show info box * |ctrl + q| quit * |ctrl + c| quit Mamba is released under the BSD Zero Clause License license regards hermann

4 years, 7 months

[LAA] Mamba - Virtual Midi keyboard for Jack Audio Connection Kit release 1.1

by Hermann Meyer

Hi Mamba release v1.1 is out Mamba - Virtual Midi keyboard https://github.com/brummer10/Mamba Mamba features * Virtual Midi Keyboard for Jack Audio Connection Kit <https://jackaudio.org/> * including NSM <https://linuxaudio.github.io/new-session-manager/> support * Channel selector * Bank and Program selector * Keyboard mapping for qwertz, qwerty and azerty selectable from menu * PC Keyboard mapping selector from C0 to C4 * Pitchbend, Balance, Modwheel, Detune, Expression, Attack, Release, Volume and Velocity controllers * Sustain and Sostenuto switches * Midi Through: forward midi input to output * Midi input highlighting * resizable to a full range 127 key view * Midi live recording and looping Mamba is released under the 0BSD license regards hermann

4 years, 8 months

[ANN] Qtractor 0.9.16 - QStuff* Summer'20 Release batch #3

by Rui Nuno Capela

Greetings One third and last time around... Qtractor 0.9.16 (summer'20) is out! Change-log: - Experimental / High resolution plugin automation (14-bit) options is now also removed from View > Options... > Plugins dialog. - Audio Clip / Export... now takes into account custom fixed gain property (shamefully missing for the whole last decade to date). - Finally indulged on dummy LV2 plug-in CVPort support, just to avoid certain immediate and sudden crashes when inserting those kind of 'non-functional' plugins accidentally. - Bring the Track Export dialog down to Clip Merge/Export as well, for optional file type and format selection. - When enabled, do auto-save upon adding or inserting a new plugin. - Make sure LV2 plug-in UI GTK2 and X11 native support is selected first by default on top to libsuil. - Both out-of-process plugin inventory scan and LV2 Dynamic manifest options have been removed from View > Options... > Plugins dialog. - Fixed deprecated stuff on an early preparation for Qt6. 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 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-0.9.16.tar.gz - source package (openSUSE Tubleweed): https://download.sf.net/qtractor/qtractor-0.9.16-57.rncbc.suse.src.rpm - binary package (openSUSE Tubleweed): https://download.sf.net/qtractor/qtractor-0.9.16-57.rncbc.suse.x86_64.rpm - AppImage [7] package: https://download.sf.net/qtractor/qtractor-0.9.16-57.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!): https://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: 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 http://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/ See also: https://www.rncbc.org/drupal/node/2110 Keep the fun && Stay safe! -- rncbc aka Rui Nuno Capela

4 years, 8 months

[ANN] Vee One Suite 0.9.16 - QStuff* Summer'20 Release batch #2

by Rui Nuno Capela

Greetings, one more time! The 'Vee One Suite' of so called '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 and padthv1 [4] as a polyphonic additive synthesizer, are here released as the second bunch of the 'QStuff*' for the (Northern) Summer'20 season and then bumped to **version 0.9.16**. All (still) delivered in dual form: - the pure stand-alone JACK client with JACK-session [5], NSM (New Session Management [6]) and both JACK MIDI and ALSA MIDI [7] input support; - the LV2 instrument plug-in [8]. Nothing much this time around, just some janitorial nitpicking: - Fixed deprecated stuff on an early preparation for Qt6. 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. And here they are one more time and again: **synthv1 - an old-school polyphonic synthesizer [1] ** synthv1 0.9.16 (summer'20) 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/synthv1-0.9.16.tar.gz - source package: https://download.sf.net/synthv1/synthv1-0.9.16-57.rncbc.suse.src.rpm - binary packages (openSUSE Tumbleweed): https://download.sf.net/synthv1/synthv1-0.9.16-57.rncbc.suse.x86_84.rpm https://download.sf.net/synthv1/synthv1-lv2-0.9.16-57.rncbc.suse.x86_84.rpm - AppImage [9] package (JACK stand-alone only): https://download.sf.net/synthv1/synthv1-0.9.16-57.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://bitbucket.org/rncbc/synthv1.git **samplv1 - an old-school polyphonic sampler [2]** samplv1 0.9.16 (summer'20) 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/samplv1-0.9.16.tar.gz - source package: https://download.sf.net/samplv1/samplv1-0.9.16-57.rncbc.suse.src.rpm - binary package (openSUSE Tumbleweed): https://download.sf.net/samplv1/samplv1-0.9.16-57.rncbc.suse.x86_84.rpm https://download.sf.net/samplv1/samplv1-lv2-0.9.16-57.rncbc.suse.x86_84.rpm - AppImage [9] package (JACK stand-alone only): https://download.sf.net/samplv1/samplv1-0.9.16-57.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://bitbucket.org/rncbc/samplv1.git **drumkv1 - an old-school drum-kit sampler [3]** drumkv1 0.9.16 (summer'20) 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/drumkv1-0.9.16.tar.gz - source package: https://download.sf.net/drumkv1/drumkv1-0.9.16-57.rncbc.suse.src.rpm - binary package (openSUSE Tumbleweed): https://download.sf.net/drumkv1/drumkv1-0.9.16-57.rncbc.suse.x86_84.rpm https://download.sf.net/drumkv1/drumkv1-lv2-0.9.16-57.rncbc.suse.x86_84.rpm - AppImage [9] package (JACK stand-alone only): https://download.sf.net/drumkv1/drumkv1-0.9.16-57.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://bitbucket.org/rncbc/drumkv1.git **padthv1 - an old-school polyphonic additive synthesizer [4]** padthv1 0.9.16 (summer'20) 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/padthv1-0.9.16.tar.gz - source package: https://download.sf.net/padthv1/padthv1-0.9.16-57.rncbc.suse.src.rpm - binary package (openSUSE Tumbleweed): https://download.sf.net/padthv1/padthv1-0.9.16-57.rncbc.suse.x86_84.rpm https://download.sf.net/padthv1/padthv1-lv2-0.9.16-57.rncbc.suse.x86_84.rpm - AppImage [9] package (JACK stand-alone only): https://download.sf.net/padthv1/padthv1-0.9.16-57.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://bitbucket.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, New Session Management https://linuxaudio.github.io/new-session-manager/ (formerly http://non.tuxfamily.org/nsm/) [7] ALSA, Advanced Linux Sound Architecture https://www.alsa-project.org/ [8] LV2, Audio Plugin Standard, the extensible successor of LADSPA http://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/2109 Keep the fun! -- rncbc aka. Rui Nuno Capela

4 years, 8 months

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Linux-audio-user August 2020