Linux-audio-dev

linux-audio-dev@lists.linuxaudio.org

7516 discussions

by Jeremy Jongepier

Dear all, First of all a happy 2020 (even though it's way past Epiphany)! So what's the fresh start about? Well, registration of the linuxaudio.org domain has been handed over to yours truly so if you need any DNS changes regarding any linuxaudio.org subdomains then I can take care of that now directly. Thanks Daniel James of 64 Studio for taking care of the domain for so long! Other part of the fresh start is that I migrated the web server to a new cloud region which is faster and more performant. I just changed all the DNS records so if you spot anything weird that just worked before then please let me know! The mail server will follow this weekend so if mail seems a bit flaky the coming weekend then you know what might cause it. Best regards, Jeremy

5 years, 10 months

New B.Choppr LV2 plugin

by Sven Jaehnichen

Hello, the first official version of the new LV2 plugin B.Choppr is just released. B.Choppr is an audio stream chopping LV2 plugin. It cuts the audio input stream into a repeated sequence of up to 16 chops which can be individually leveled. B.Choppr is the official successor of B.Slizr. What's new: * Define individual step sizes using markers (automatic or manual mode) * Select between linear and non-linear (sinusoid) crossfading * Zoom monitor by mouse drag or wheel scroll * Stable hover effects Project page: https://github.com/sjaehn/BChoppr Download: https://github.com/sjaehn/BChoppr/releases Instructions: https://github.com/sjaehn/BChoppr/blob/master/README.md Try, enjoy and have fun Sven Jaehnichen

5 years, 10 months

[ANN] Qtractor 0.9.12 - The QStuff* Winter'19 Release batch #3

by Rui Nuno Capela

Greetings, just one last time! Qtractor 0.9.12 (winter'19) is released! The change-log is rather short but nevertheless: - Basic key-signature has been added to tempo, time-signature and location markers map. - MIDI Clip editor (aka. piano-roll) horizontal and vertical splitter sizes, widths and heights resp. are now preserved as user preferences and also to session state. - Second attempt to fix the yet non-official though CMake build configuration. 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-0.9.12.tar.gz - source package (openSUSE Tubleweed): https://download.sf.net/qtractor/qtractor-0.9.12-52.rncbc.suse.src.rpm - binary package (openSUSE Tubleweed): https://download.sf.net/qtractor/qtractor-0.9.12-52.rncbc.suse.x86_64.rpm - AppImage [7] package: https://download.sf.net/qtractor/qtractor-0.9.12-52.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/2067 Enjoy && Happy new year/decade's eve. -- rncbc aka Rui Nuno Capela

5 years, 10 months

[ANN] Vee One Suite 0.9.12 - The QStuff* Winter'19 Release batch #2

by Rui Nuno Capela

Greetings, one second 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 all here and now released, making it for the second QStuff* Winter'19 batch of the season. All delivered in dual form: - a pure stand-alone JACK client with JACK-session [5], NSM (Non Session management [6]) and both JACK MIDI and ALSA MIDI [7] input support; - a LV2 instrument plug-in [8]. Changes for this special season are pretty much the same for all the 'gang-of-four': - Custom color (palette) theme editor introduced; color (palette) theme changes are now effective immediately, except on default. - Second attempt to fix the yet non-official though CMake build configuration. - Move QApplication construction/destruction from LV2 UI to plug-in instantiation and cleanup. 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 0.9.12 (winter'19) 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/synthv1-0.9.12.tar.gz - source package: https://download.sf.net/synthv1/synthv1-0.9.12-51.rncbc.suse.src.rpm - binary packages (openSUSE Tumbleweed): https://download.sf.net/synthv1/synthv1-0.9.12-51.rncbc.suse.x86_84.rpm https://download.sf.net/synthv1/synthv1-lv2-0.9.12-51.rncbc.suse.x86_84.rpm - AppImage [9] package (JACK stand-alone only): https://download.sf.net/synthv1/synthv1-0.9.12-51.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 0.9.12 (winter'19) 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/samplv1-0.9.12.tar.gz - source package: https://download.sf.net/samplv1/samplv1-0.9.12-51.rncbc.suse.src.rpm - binary package (openSUSE Tumbleweed): https://download.sf.net/samplv1/samplv1-0.9.12-51.rncbc.suse.x86_84.rpm https://download.sf.net/samplv1/samplv1-lv2-0.9.12-51.rncbc.suse.x86_84.rpm - AppImage [9] package (JACK stand-alone only): https://download.sf.net/samplv1/samplv1-0.9.12-51.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 0.9.12 (winter'19) 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/drumkv1-0.9.12.tar.gz - source package: https://download.sf.net/drumkv1/drumkv1-0.9.12-43.rncbc.suse.src.rpm - binary package (openSUSE Tumbleweed): https://download.sf.net/drumkv1/drumkv1-0.9.12-43.rncbc.suse.x86_84.rpm https://download.sf.net/drumkv1/drumkv1-lv2-0.9.12-43.rncbc.suse.x86_84.rpm - AppImage [9] package (JACK stand-alone only): https://download.sf.net/drumkv1/drumkv1-0.9.12-51.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 0.9.12 (winter'19) 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/padthv1-0.9.12.tar.gz - source package: https://download.sf.net/padthv1/padthv1-0.9.12-51.rncbc.suse.src.rpm - binary package (openSUSE Tumbleweed): https://download.sf.net/padthv1/padthv1-0.9.12-51.rncbc.suse.x86_84.rpm https://download.sf.net/padthv1/padthv1-lv2-0.9.12-51.rncbc.suse.x86_84.rpm - AppImage [9] package (JACK stand-alone only): https://download.sf.net/padthv1/padthv1-0.9.12-51.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, Non Session Management 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/2066 Enjoy && Have fun! -- rncbc aka. Rui Nuno Capela

5 years, 10 months

Release XPolyMonk.lv2 v0.5

by Hermann Meyer

This is the initial release of XPolyMonk.lv2, a polyphonic version of Xmonk.lv2. XPolyMonk comes with 12 voices, full midi support and a integrated virtual keyboard. It use libxputty to create the interface: https://github.com/brummer10/libxputty The dsp part is heavily based on the FAUST `SFFormantModelBP` from physmodels.lib XPolyMonk is licensed under the BSD Zero Clause License, so you could do with it what ever you like. You'll find it's development source code here: https://github.com/brummer10/XPolyMonk.lv2 and the release here: https://github.com/brummer10/XPolyMonk.lv2/releases Happy Xmas to all hermann

5 years, 10 months

[ANN] The QStuff* Winter'19 Release batch #1

by Rui Nuno Capela

Greetings! The old core of QStuff*, QjackCtl [1], Qsynth [2], Qsampler [3], QXGEdit [4], QmidiCtl [5] and QmidiNet [6], are all here and now bumped to **version 0.6.1**, making it the first batch for the last (northern) winter solistice of the decade. So here they go... ** QjackCtl - JACK Audio Connection Kit Qt GUI Interface [1] ** QjackCtl 0.6.1 (winter'19) released! QjackCtl is a(n ageing yet modern, not so 'simple' anymore) Qt [7] application to control the JACK [8] sound server, for the Linux Audio [12] infrastructure. 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-0.6.1.tar.gz - source package: https://download.sf.net/qjackctl/qjackctl-0.6.1-40.rncbc.suse.src.rpm - binary package: https://download.sf.net/qjackctl/qjackctl-0.6.1-40.rncbc.suse.x86_64.rpm - AppImage [20] package: https://download.sf.net/qjackctl/qjackctl-0.6.1-40.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:1 - Custom color (palette) theme editor introduced; color (palette) theme changes are now effective immediately, except on default. - Second attempt to fix the yet non-official though CMake build configuration. - When using autotools and ./configure --with-qt=..., it is also necessary to adjust the PKG_CONFIG_PATH environment variable (after a merge request by plcl aka. Pedro López-Cabanillas, while on qmidinet [6], thanks). ** Qsynth - A fluidsynth Qt GUI Interface [2] ** Qsynth 0.6.1 (winter'19) released! Qsynth is a FluidSynth [10] GUI front-end application written in C++ around the Qt framework [7] using Qt Designer. Website: https://qsynth.sourceforge.io http://qsynth.sourceforge.net Project page: https://sourceforge.net/projects/qsynth Downloads: https://sourceforge.net/projects/qsynth/files - source tarball: https://download.sf.net/qsynth/qsynth-0.6.1.tar.gz - source package: https://download.sf.net/qsynth/qsynth-0.6.1-40.rncbc.suse.src.rpm - binary package: https://download.sf.net/qsynth/qsynth-0.6.1-40.rncbc.suse.x86_64.rpm - AppImage [20] package: https://download.sf.net/qsynth/qsynth-0.6.1-40.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: - Custom color (palette) theme editor introduced; color (palette) theme changes are now effective immediately, except on default. - Second attempt to fix the yet non-official though CMake build configuration. - When using autotools and ./configure --with-qt=..., it is also necessary to adjust the PKG_CONFIG_PATH environment variable (after a merge request by plcl aka. Pedro López-Cabanillas, while on qmidinet [6], thanks). ** Qsampler - A LinuxSampler Qt GUI Interface [3] ** Qsampler 0.6.1 (winter'19) released! Qsampler is a LinuxSampler [11] GUI front-end application written in C++ around the Qt framework [7] using Qt Designer. Website: https://qsampler.sourceforge.io http://qsampler.sourceforge.net Project page: https://sourceforge.net/projects/qsampler Downloads: https://sourceforge.net/projects/qsampler/files - source tarballs: https://download.sf.net/qsampler/qsampler-0.6.1.tar.gz - source package: https://download.sf.net/qsampler/qsampler-0.6.1-40.rncbc.suse.src.rpm - binary package: https://download.sf.net/qsampler/qsampler-0.6.1-40.rncbc.suse.x86_64.rpm - AppImage [20] package: https://download.sf.net/qsampler/qsampler-0.6.1-40.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: - Custom color (palette) theme editor introduced; color (palette) theme changes are now effective immediately, except on default. - Second attempt to fix the yet non-official though CMake build configuration. - When using autotools and ./configure --with-qt=..., it is also necessary to adjust the PKG_CONFIG_PATH environment variable (after a merge request by plcl aka. Pedro López-Cabanillas, while on qmidinet [6], thanks). ** QXGEdit - A Qt XG Editor [4] ** QXGEdit 0.6.1 (winter'19) released! QXGEdit is a live XG instrument editor, specialized on editing MIDI System Exclusive files (.syx) for the Yamaha DB50XG [14] and thus probably a baseline for many other XG devices. Website: https://qxgedit.sourceforge.io http://qxgedit.sourceforge.net Project page: https://sourceforge.net/projects/qxgedit Downloads: https://sourceforge.net/projects/qxgedit/files - source tarball: https://download.sf.net/qxgedit/qxgedit-0.6.1.tar.gz - source package: https://download.sf.net/qxgedit/qxgedit-0.6.1-20.rncbc.suse.src.rpm - binary package: https://download.sf.net/qxgedit/qxgedit-0.6.1-20.rncbc.suse.x86_64.rpm - AppImage [20] package: https://download.sf.net/qxgedit/qxgedit-0.6.1-20.x86_64.AppImage Git repos: https://git.code.sf.net/p/qxgedit/code https://github.com/rncbc/qxgedit.git https://gitlab.com/rncbc/qxgedit.git https://bitbucket.com/rncbc/qxgedit.git Change-log: - Custom color (palette) theme editor introduced; color (palette) theme changes are now effective immediately, except on default. - Second attempt to fix the yet non-official though CMake build configuration. - When using autotools and ./configure --with-qt=..., it is also necessary to adjust the PKG_CONFIG_PATH environment variable (after a merge request by plcl aka. Pedro López-Cabanillas, while on qmidinet [6], thanks). ** QmidiCtl - A MIDI Remote Controller via UDP/IP Multicast [5] ** QmidiCtl 0.6.1 (winter'19) released! QmidiCtl [5] is a MIDI remote controller application that sends MIDI data over the network, using UDP/IP multicast. Inspired by multimidicast [15] and designed to be compatible with ipMIDI [15] for Windows. QmidiCtl [5] was long ago designed for the Maemo [17] enabled handheld devices, namely the late Nokia N900 [18] and promoted to the Maemo Package [18] repositories. Nevertheless, QmidiCtl [5] may still be found effective as a regular desktop application and recently as an Android application as well. Website: https://qmidictl.sourceforge.io http://qmidictl.sourceforge.net Project page: https://sourceforge.net/projects/qmidictl Downloads: https://sourceforge.net/projects/qmidictl/files - source tarball: https://download.sf.net/qmidictl/qmidictl-0.6.1.tar.gz - source package: https://download.sf.net/qmidictl/qmidictl-0.6.1-20.rncbc.suse.src.rpm - binary package: https://download.sf.net/qmidictl/qmidictl-0.6.1-20.rncbc.suse.x86_64.rpm - AppImage [20] package: https://download.sf.net/qmidictl/qmidictl-0.6.1-20.x86_64.AppImage - Android packages: https://download.sf.net/qmidictl/qmidictl-0.6.1-20.armeabi-v7a.apk https://download.sf.net/qmidictl/qmidictl-0.6.1-20.arm64-v8a.apk https://play.google.com/store/apps/details?id=org.rncbc.qmidictl Git repos: https://git.code.sf.net/p/qmidictl/code https://github.com/rncbc/qmidictl.git https://gitlab.com/rncbc/qmidictl.git https://bitbucket.com/rncbc/qmidictl.git Change-log: - Provide a default IPv6 address, and feedback to the user in the options dialog (after a merge request by plcl aka. Pedro López-Cabanillas, while on [url=https://qmidinet.sourceforge.io]qmidinet[/url]). - When using autotools and ./configure --with-qt=..., it is also necessary to adjust the PKG_CONFIG_PATH environment variable (after a merge request by plcl aka. Pedro López-Cabanillas, while on [url=https://qmidinet.sourceforge.io]qmidinet[/url], thanks). ** QmidiNet - A MIDI Network Gateway via UDP/IP Multicast [6] ** QmidiNet 0.6.1 (winter'19) released! QmidiNet is a MIDI network gateway application that sends and receives MIDI data (ALSA-MIDI [9] and JACK-MIDI [8]) over the network, using UDP/IP multicast. Inspired by multimidicast [15] and designed to be compatible with ipMIDI [16] for Windows. Website: https://qmidinet.sourceforge.io http://qmidinet.sourceforge.net Project page: https://sourceforge.net/projects/qmidinet Downloads: https://sourceforge.net/projects/qmidinet/files - source tarball: https://download.sf.net/qmidinet/qmidinet-0.6.1.tar.gz - source package: https://download.sf.net/qmidinet/qmidinet-0.6.1-20.rncbc.suse.src.rpm - binary package: https://download.sf.net/qmidinet/qmidinet-0.6.1-20.rncbc.suse.x86_64.rpm - AppImage [20] package: https://download.sf.net/qmidinet/qmidinet-0.6.1-20.x86_64.AppImage Git repos: https://git.code.sf.net/p/qmidinet/code https://github.com/rncbc/qmidinet.git https://gitlab.com/rncbc/qmidinet.git https://bitbucket.com/rncbc/qmidinet.git Change-log: - Second attempt to fix the yet non-official though CMake build configuration. - Provide a default IPv6 address, and feedback to the user in the options dialog (after a merge request by plcl aka. Pedro López-Cabanillas, thanks). - When using ./configure --with-qt=... it is also necessary to adjust the PKG_CONFIG_PATH environment variable (also by plcl aka. Pedro López-Cabanillas). License: All of the Qstuff* are free, open-source Linux Audio [11] software, distributed under the terms of the GNU General Public License (GPL) version 2 or later [12]. References: [1] QjackCtl - A JACK Audio Connection Kit Qt GUI Interface https://qjackctl.sourceforge.io [2] Qsynth - A fluidsynth Qt GUI Interface https://qsynth.sourceforge.io [3] Qsampler - A LinuxSampler Qt GUI Interface https://qsampler.sourceforge.io [4] QXGEdit - A Qt XG Editor https://qxgedit.sourceforge.io [5] QmidiCtl - A MIDI Remote Controller via UDP/IP Multicast https://qmidictl.sourceforge.io [6] QmidiNet - A MIDI Network Gateway via UDP/IP Multicast https://qmidinet.sourceforge.io [7] Qt framework, C++ class library and tools for cross-platform application and UI development https://qt.io/ [8] JACK Audio Connection Kit https://jackaudio.org [9] ALSA, Advanced Linux Sound Architecture https://www.alsa-project.org/ [10] FluidSynth - A SoundFont Synthesizer A real-time software synthesizer based on SoundFont 2 specifications https://www.fluidsynth.org [11] LinuxSampler - The Linux Sampler Project A modular, streaming capable, realtime audio sampler https://www.linuxsampler.org [12] Linux Audio consortium of libre software for audio-related work https://linuxaudio.org [13] GPL - GNU General Public License https://www.gnu.org/copyleft/gpl.html [14] Yamaha DB50XG http://www.soundonsound.com/sos/1996_articles/may96/yamahadb50xg.html [15] multimidicast - sends and receives MIDI from ALSA sequencers over network https://llg.cubic.org/tools/multimidicast [16] ipMIDI - MIDI over Ethernet ports - send MIDI over your LAN https://nerds.de [17] Maemo.org - Home of the Maemo community https://www.maemo.org [18] Maemo.org Wiki - Nokia N900 https://wiki.maemo.org/Nokia_N900 [19] Maemo.org - Downloads: QmidiCtl https://maemo.org/downloads/product/Maemo5/qmidictl [20] AppImage, Linux apps that run anywhere https://appimage.org/ See also: https://www.rncbc.org/drupal/node/2045 Enjoy && Be Happy! ;) -- rncbc aka Rui Nuno Capela

5 years, 10 months

Berlin Linux Audio meeting @ c-base 2019-12-10

by Daniel Swärd

Hi all. Tomorrow it's again the monthly meeting at c-base. I'll be in the mainhall from 20 as usual. See you there. /Daniel

5 years, 11 months

pugl examples

by Will Godfrey

Does anyone know of any simple example files for pugl. I've had a good look around and can't find any. I know there are some fully-formed programs out there, but don't want the confusion of trying to find the core material so that I can understand 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.

5 years, 11 months

liquidsfz-0.1.0

by Stefan Westerfeld

liquidsfz-0.1.0 has been released The main goal of liquidsfz is to provide an SFZ sampler implementation library that is easy to integrate into other projects. A standalone jack client is also available. liquidsfz is implemented in C++ and licensed under the GNU LGPL version 2.1 or later. The release tarball can be downloaded here: https://github.com/swesterfeld/liquidsfz#releases -- Stefan Westerfeld, http://space.twc.de/~stefan

5 years, 11 months

Re: [LAD] Jack audio questions to aid in my development of audiorack

by Ethan Funk

Since I originally wrote audiorack using Apple's CoreAudio, I made design decisions based on the functioning of that API. Many of those choices needed to be reconsidered as I adapted the design to the jack API. A very big structural difference between the APIs is how "rendering" sample buffers is accomplished. CoreAudio provides a separate callback to get or deliver a block of samples for EVERY audio interface your program attachs to. For my program using that API, my design is based on an audio interface being choosen as a "master." This is the low latency interface that my code's core mixer is driven by. Other interfaces, both ins and outs, get an extra buffer between them and the core mixer. For the call-back code of these "slave" interfaces, my code compared the time stamps between the core mixer buffer, and the slave buffer to make a "phase" adjustment using Apple's varispeed resampling audiounit plugin with a PID error loop controlling the resampling ratio. This keeps the buffers, on average, in sync, but with extra delay to handle kernel callback scheduling jitter. i.e. no guarantee what order the OS will schedule the call-backs, even if they are on the same sample clock. So with this scheme, I could use any number of interfaces I wanted, each with it's own slightly different clock rates and drift, with one interface selected as the low latency master. After years of tweaking the PID filter, I had it working very well, with no cost (other than processor overhead of the re-sampling) to the master interface. Jack on, the other hand, has a single callback from which samples are received from jack source ports, and new sample data is delivered to jack destination ports. A very nice and clean approach, driven with a single clock source. And appropriate for interconnecting audio streams between programs. I like it a lot. I have lost the ability to allow for my software to handle re-sampling on multiple clock domains. I was thinking that zita-a2j, etc, was my path to get the functionality back. If I didn't have it working so well on OSX, I wouldn't lament the loss with jack. But it's hard to give up on it! Thanks for the Ubuntu Studio Control links. Ethan... On Sun, 2019-11-17 at 00:21 +0100, Ralf Mardorf wrote: > On Sat, 16 Nov 2019 15:49:34 -0700, Ethan Funk wrote: > > > Why do you need zita-a2j/j2a anyway ? Using a single > > > multichannelcardis usually the better solution. > > > > I have one multichannel audio interface for everything > > important:program out, studio monitors, headphones, guest mic, host > > mic,etc. But it sure is nice to be able to use the built-in audio > > for acue channel and talkback mic, where latency is not > > important. Alsohandy for USB turntables, and other random devices > > that areoccasionally used in a radio show without latency being > > important. > > You are mistaken. Try to avoid anything that affects > "everythingimportant". To sync different devices by software affects > "everythingimportant". > On Sat, 16 Nov 2019 14:47:26 -0700, Ethan Funk wrote: > > Does anyone know where I can find the source code for UbuntuStudio > > Control? > > https://packages.ubuntu.com/source/eoan/ubuntustudio-controls > https://launchpad.net/ubuntustudio-controls >

5 years, 11 months

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Linux-audio-dev