Linux-audio-announce

linux-audio-announce@lists.linuxaudio.org

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3181 discussions

by Adam Davison

Mixxx is currently the most popular open source djing software package, providing everything you need to make your mixes in a completely open source environment. The Mixxx development team is proud to announce the release of version 1.6.0, representing 16 months of development. It is available for Linux, Intel Mac and Windows. For a full list of changes, please see our blog at http://mixxxblog.blogspot.org. Some highlights are: * Vinyl control - Use your turntables to drive Mixxx with generic soundcards, no more being tied to branded hardware by proprietary software * Better hardware support - Mixxx 1.6.0 supports a much wider range of MIDI controllers to previous releases * Stability - Many stability issues have been fixed * Better BPM detection * A better media library We'd love for you to try it out and let us know what you think whether you're an existing user or new to Mixxx. Head over to http://www.mixxx.org to download. Thanks, Adam Davison on behalf of the Mixxx development team

16 years, 8 months

[LAU] [ANN] guitarix first release

by Hermann Meyer

guitarix is a simple mono amplifier to jack (JackAudioConnektionKit) with one input and two output's. Designed to get nice trash/metall/rock/guitar sounds. Avaliable are the controls for bass, treble, gain, balance, distortion, freeverb, impulse response (pre state), crybaby(wah), feedback/feedforward-filter and echo . A fixed resonator will use, when distortion is disabled. guitarix based on Gtk, a great part is also realesed as ladspa plugin. guitarix is licensed under GPL Homepage with screenshots: https://brain.kicks-ass.org/~hermann/guitarfx.html For capture guitarix make use of jack_capture from Kjetil S. Matheussen. If you dont have it installed, look here: http://old.notam02.no/arkiv/src/?M=D I use faust to build the prototype and will say thanks to : Julius Smith <http://ccrma.stanford.edu/realsimple/faust/> : Albert Graef <http://www.musikwissenschaft.uni-mainz.de/~ag/ag.html> : Yann Orlary <http://faust.grame.fr/> regards hermann

16 years, 8 months

[ANN] a2jmidid version 4 "Devsirme" released

by Nedko Arnaudov

a2jmidid is a project that aims to ease usage of legacy ALSA sequencer applications, in a JACK MIDI enabled system. a2jmidid implementation is based on jack-alsamidi-0.5 that is [almost] same as jackd ALSA "seq" MIDI backend, both created by Dmitry Baikov. Static bridges are based on code by Sean Bolton and Lars Luthman. Homepage with screenshots: http://home.gna.org/a2jmidid/ Tarball download: http://download.gna.org/a2jmidid/ Changes since version 3: * Fix typos in docs * Disable use of C++ demangling in sigsegv. Fix for sr #2074 * Fix a2j_control help text (thanks kfoltman!) * Request fixed JACK client name. Fix for bug #12139 * Handle missing svnversion executable nicely. Fixes bug #12138 Changes since version 2: * Improved port naming, support for bidirectional ports * Allow exporting of hardware ports (disabled by default) * Switch from autotools to waf * Remove support for old JACK MIDI API variants * Remove usage of posix semaphores that could cause sleep in realtime context, in rare circumstances * D-Bus background service mode. The old manual mode is still working. * Log file when running in background service mode. * Improved documentation * Import, with slight modifications, static bridges created by Sean Bolton and Lars Luthman. -- Nedko Arnaudov <GnuPG KeyID: DE1716B0>

16 years, 8 months

[ANN] a2jmidid version 3 "Bodrum" released

by Nedko Arnaudov

a2jmidid is a project that aims to ease usage of legacy ALSA sequencer applications, in a JACK MIDI enabled system. a2jmidid implementation is based on jack-alsamidi-0.5 that is [almost] same as jackd ALSA "seq" MIDI backend, both created by Dmitry Baikov. Static bridges are based on code by Sean Bolton and Lars Luthman. Homepage with screenshots: http://home.gna.org/a2jmidid/ Tarball download: http://download.gna.org/a2jmidid/ Changes since version 2: * Improved port naming, support for bidirectional ports * Allow exporting of hardware ports (disabled by default) * Switch from autotools to waf * Remove support for old JACK MIDI API variants * Remove usage of posix semaphores that could cause sleep in realtime context, in rare circumstances * D-Bus background service mode. The old manual mode is still working. * Log file when running in background service mode. * Improved documentation * Import, with slight modifications, static bridges created by Sean Bolton and Lars Luthman. -- Nedko Arnaudov <GnuPG KeyID: DE1716B0>

16 years, 8 months

[ANN] Realtime priority patch for the linux kernel, jack_capture V0.9.23 and Rollendurcmesserzeitsammler V0.0.4

by Kjetil S. Matheussen

Download from: http://old.notam02.no/arkiv/src/?M=D Realtime priority patch for the linux kernel ============================================ To make sure the Linux kernel is able to grant realtime priority, and full nice and mlock capabailites can still be a little bit inconvenient and/or frustrating. However, this super-tiny patch: http://old.notam02.no/arkiv/src/realtime.diff against the linux source shortcuts all other methods. No more pam, realtime-lsm, rtlimits etc. jack_capture ============ jack_capture is a program for recording soundfiles with jack. Its default operation is to capture whatever sound is going out to your speakers into a file. (But it can do a number of other operations as well...) Changes 0.9.19 -> 0.9.23: *Minor spellings *Check for out of memory *Clean up source a bit *Stop connection thread before closing jack client. *Made --help a tiny bit cleaner *Removed shut down code from the SIGINT signal handler. *Fixed segfault in case jack shuts down. Thanks to Julien Claassen for reporting the bug. (Note that there is also a 0.9.24 release. 0.9.24 has changed internal data representation from lockless ringbuffer to lockless lifo and fifo stacks. (Unmodified lifo/fifo code taken from midishare. (Copyright Grame 1999-2005)) 0.9.24 probably works fine, but it shouldn't be used for important recordings since it hasn't been much tested yet.) Rollendurchmesserzeitsammler v0.0.5 ------------------------------------ The Audio Rollendurchmesserzeitsammler is a conservative garbage collector especially made for running inside an audio DSP thread. New about this release is that I have finally replaced TLSF (http://rtportal.upv.es/rtmalloc/) with a pool-based dynamic memory allocator, which makes allocation using the rollendurchmesserzeitsammler approximately as fast as using custom memory pools. Using the rollendurchmesserzeitsammler should be a lot more convenient than memory pools though, and since memory is not freed manually, but instead is automatically freed in a separate thread, there is a slight chance that using rollendurchmesserzeitsammler instead of custom memory pools could make some DSP code run faster. In non-synthetic benchmarks, I have not been able to see any significant improvement in CPU use because of this compared to using the TLSF allocator. But for programs doing millions of allocations per second, the new memory allocator will probably perform significantly better than TLSF, if it would ever make sense doing so many and frequent allocations of course... Changes 0.0.4 -> 0.0.5 * Implemented a custom pool-based dynamic memory allocater. This new memory allocator is now set as default. To use TLSF instead, set "USE_TLSF=-DUSE_TLSF" in the Makefile before compiling. The following changes are caused by this switch: * Allocating memory is now approx 10 times faster (13 vs. 168 instructions for the allocation itself, but there are some GC overhead too) * The allocator copies used memory only (not just the whole heap). But not always! This was a lot more complicated to to with TLSF so I didn't do that. Note that for the garbage collector to still be hard realtime safe, the programs must ensure that full copies are taken now and then. (There's a change in the API for doing that) * Doing a garbage collection is much faster since the heaps are usually much smaller (because only used memory is copied) and that freeing is 10-20 times faster. * Further improvements for reducing memory overhead and make searching for used mem to be O(log n) instead of O(n) is much simpler now. (this is TODO though) * However 1: In case the code using the garbage collector will continue forever to allocate memory of different sizes, the new dynamic memory allocator could eventually run out of memory even if the program itself doesn't use very much memory. I don't think this is very likely to happen for DSP routines though, and there might even be solutions to fix this problem if it should ever come up. For now, just switching to TLSF fixes the problem. * However 2: in non-synthetic benchmarks, I have not been able to see any practical improvement in CPU use, apart from the slight improvement in CPU available for use in non-realtime threads because taking snapshots usually takes a lot less time now. But for programs doing millions of allocations per second, the new memory allocator will probably perform significantly better than TLSF, if it would ever make sense doing so many allocations of course.

16 years, 9 months

New Linux Audio Tuning mailing list

by Daniel James

Hello all, A new mailing list has been set up to help GNU/Linux distribution maintainers and other interested users share information on performance tuning matters, especially with regard to audio and real-time Linux kernels. You can subscribe here: http://lists.linuxaudio.org/listinfo/linux-audio-tuning Cheers! Daniel

16 years, 9 months

Call for projects - make art 2008 - EXTENDED DEADLINE

by propaganda＠goto10.org

Hey! sorry for >< please >> phew... summer is hot... EXTENDED DEADLINE! :) 8th of August -- (french version below) -- _ _ _ ____ _ _ _______|_| | |_ _| | _|____|_ | | _|_| | _____| | _|__|_ | | |____| | | |___|_| | |_____ | | |__| | | | ____ | | ___|_ | _____| | | | | | |_ | | | | |_|_ | |_______ |_|_ |_| |___| |_| |_| |_| |_________| |_|_ ____ _______ _________ |_| _|____|_ | _____|_ |___ ___|_ _ | |____| | | |_____|_| | | |_| |_| from 24th | __ | | _ _| | | to 30th of | | |_ | | | |_|___ _|_| NOVEMBER 08 |_| |_| |_| |___| |_| MAKE ART 2008 - OpenOS CALL FOR PROJECTS Make Art is an international festival dedicated to the integration of Free/Libre Open Source Software (FLOSS) in digital art. The third edition of make art - OpenOS - will take place in Poitiers (FR), from the 24th to the 30th of November 2008. make art offers performances, presentations, workshops and an exhibition, focused on the blurred line between art and software programming. We're currently seeking new, innovative FLOSS based works and projects: music and audiovisual performances, presentations, software demos, and installations. This year make art focuses on the *OpenOS*: artistic, free, creative use of the Operating System, hackability and modularity of FLOSS and GNU/Linux, scripts as digital glue between applications, enhanced possibilities for the technical expression of ideas, user empowerment and artistic freedom. For more details, please visit http://makeart.goto10.org/call -- _ _ _ ____ _ _ _______|_| | |_ _| | _|____|_ | | _|_| | _____| | _|__|_ | | |____| | | |___|_| | |_____ | | |__| | | | ____ | | ___|_ | _____| | | | | | |_ | | | | |_|_ | |_______ |_|_ |_| |___| |_| |_| |_| |_________| |_|_ ____ _______ _________ |_| _|____|_ | _____|_ |___ ___|_ _ | |____| | | |_____|_| | | |_| |_| | __ | | _ _| | | du 24 au 30 | | |_ | | | |_|___ _|_| NOVEMBRE 08 |_| |_| |_| |___| |_| MAKE ART 2008 - OpenOS APPEL A PROJET make art est un festival international dédié à l'intégration des Logiciels Libres et Open Source (FLOSS[1]) dans l'art numérique. La troisième édition de make art – OpenOS - se déroule à Poitiers (FR), du 24 au 30 novembre 2008. make art propose des performances, des présentations, des workshops et une exposition, centrés sur la rencontre entre l'art numérique et le logiciel libre. Nous recherchons actuellement des projets récents, innovants, basés sur des logiciels libres et open source : performances musicales et audio-visuelles, présentations, démonstrations de logiciels et installations. Cette année make art portera une attention particulière à l'OpenOS: l'utilisation artistique, libre, créative du système d'exploitation (OS[2]), la "hackabilité" et la modularité des Logiciels Libre et Open Source (FLOSS) et de GNU/Linux, les scripts comme glu numérique pour interconnecter les applications, les possibilités accrues pour l'expression technique des idées, l'autonomisation de l'utilisateur (empowerment) et la liberté artistique. [1] FLOSS: Free/Libre/Open Source Software [2] OS:Operating System Pour plus de détail, veuillez visiter l'adresse suivante : http://makeart.goto10.org/call/index.fr.html -- :*

16 years, 9 months

Rivendell v1.0.0rc4

by Fred Gleason

On behalf of the entire Rivendell development team, I'm pleased to announce the release of Rivendell v1.0.0rc4. Rivendell is a full-featured radio automation system targeted for use in professional broadcast environments. It is available under the GNU General Public License. Changes in this release include (from the NEWS file): *** snip snip *** Changes: Fixed a bug that caused audio imports to be assigned incorrect Start and End dates. Database Update: This version of Rivendell uses database schema version 159, and will automatically upgrade any earlier versions. To see the current schema version prior to upgrade, see RDAdmin->SystemInfo. As always, be sure to run RDAdmin immediately after upgrading to allow any necessary changes to the database schema to be applied. *** snip snip *** Further information, screenshots and download links are available at: http://www.rivendellaudio.org/ Cheers! |-------------------------------------------------------------------------| | Frederick F. Gleason, Jr. | Chief Developer | | | Paravel Systems | |-------------------------------------------------------------------------| | A government that is big enough to give you all you want is big enough | | to take it all away. | | -- Barry Goldwater | |-------------------------------------------------------------------------|

16 years, 9 months

Rivendell v1.0.0rc3

by Fred Gleason

On behalf of the entire Rivendell development team, I'm pleased to announce the release of Rivendell v1.0.0rc3. Rivendell is a full-featured radio automation system targeted for use in professional broadcast environments. It is available under the GNU General Public License. Changes in this release include (from the NEWS file): *** snip snip *** Changes: Rivendell Import Filter. An import filter for importing carts from another Rivendell system has been added. See the 'rivendell_filter.TXT' file for usage information. Bugfixes. See the ChangeLog for details. Database Update: This version of Rivendell uses database schema version 159, and will automatically upgrade any earlier versions. To see the current schema version prior to upgrade, see RDAdmin->SystemInfo. As always, be sure to run RDAdmin immediately after upgrading to allow any necessary changes to the database schema to be applied. *** snip snip *** Further information, screenshots and download links are available at: http://www.rivendellaudio.org/ Cheers! |-------------------------------------------------------------------------| | Frederick F. Gleason, Jr. | Chief Developer | | | Paravel Systems | |-------------------------------------------------------------------------| | When the weight of the paperwork equals the weight of the plane, the | | plane will fly. | | -- Donald Douglas | |-------------------------------------------------------------------------|

16 years, 9 months

Qtractor 0.2.0 (frolic demoiselle) is out!

by Rui Nuno Capela

Qtractor 0.2.0 (frolic demoiselle) is out! ------------------------------------------ Qtractor is an audio/MIDI multi-track sequencer application written in C++ with the Qt4 framework [1]. Target platform is Linux, where the a Jack Audio Connection Kit (JACK) for audio [2] and the Advanced Linux Sound Architecture (ALSA) for MIDI [3] are the main infrastructures to evolve as a fairly-featured Linux desktop audio workstation GUI, specially dedicated to the personal home-studio. Qtractor is free open-source software, distributed under the GNU General Public License (GPL) [15]. Author: Rui Nuno Capela <rncbc at rncbc dot org> Weblog: http://wwww.rncbc.org Website: http://qtractor.sourceforge.net Project page: http://sourceforge.net/projects/qtractor Download: http://downloads.sourceforge.net/qtractor/qtractor-0.2.0.tar.gz Executive summary: - Multi-track audio and MIDI sequencing and recording. - Developed on pure Qt4 C++ application framework [1] (no Qt3 nor KDE dependency). - Uses JACK [2] for audio and ALSA [3] sequencer for MIDI as infrastructure. - Traditional multi-track tape recorder control paradigm. - Audio file formats support: OGG (via libvorbis [6]), MP3 (via libmad [7], playback only), WAV, FLAC, AIFF and many, many more (via linsndfile [4]). - Standard MIDI files support (format 0 and 1). - Non-destructive, non-linear editing. - Unlimited number of tracks per session/project. - Unlimited number of overlapping clips per track. - XML encoded session/project description files (SDI). - Point-and-click, multi-select, drag-and-drop interaction (drag, move, drop, cut, copy, paste, delete, split) - Unlimited undo/redo. - Built-in mixer and monitor controls. - Buil-in connection patchbay control and persistence (a-la QjackCtl [13]). - LADSPA [5], DSSI [11] and native VSTi [12] plug-in support. - Unlimited number of plug-ins per track or bus. - Plug-in presets, programs and chunk/configurations support. - Audio/MIDI clip fade-in/out (linear, quadratic, cubic). - Audio clip time-stretching (WSOLA-like or via librubberband [9]), pitch-shifting (vib librubberband [9]) and samplerate conversion (via libsamplerate [8]). - Audio/MIDI track export (mix-down, merge). - Audio/MIDI metronome bar/beat clicks. - MIDI clip editor (piano roll). - MIDI instrument definitions (a-la Cakewalk(tm) [15]) - JACK transport sync master. - MMC control surface enabled. - Configurable keyboard shortcuts. Requirements: Mandatory: libqt4 [1], libjack [2], libasound [3], libsndfile [4], LADSPA [5]. Optional: libvorbis [6], libmad [7], libsamplerate [8], librubberband [9], liblo [10], DSSI [11], VST-SDK [12]. Disclaimer: Qtractor is still in some alpha stage of development, although already functional it surely has a plenty of lurking bugs. It also lacks some features that some might find critical in the application field. All is not lost, as the following are among the ones planned to be worked on in the times to come (not in any particular order): - Automation and MIDI controller mapping. - Session/project templates. - Puch-in/out and loop recording (takes). - Audio clip cross-fading. - Audio effect send/return aux. inserts. - Clip locking, muting, normalize (gain). - LV2 plug-in support. - JACK MIDI support. - Tempo and key signature map. - Paste-repeat command. - MIDI SysEx manager. - MIDI event list editor. - MIDI editor (piano roll) draw mode. - MIDI groove/swing quantize. - OSC interface. - Scripting. - Etc. etc. Change-log: 2009-07-18 0.2.0 The Frolic Demoiselle - MIDI clip filename revision logic is now introduced, thus avoiding the proliferation of several numbered SMF's on each edit/save; some lurking bugs were exposed in the MIDI clip externalization method but promptly squashed. - Fixed a mouse release event glitch while in drag-and-drop items in the Files tree list widget. - A dummy plugin type option has been devised, just to bear with some troubled behavior of the lovely JUCETICE plugins (View/Options.../Plugins/Experimental/Dummy VST plugin scan). Bad news are that all, yes all as in every native VST plugins, are indistinguishable from being just pure audio effects, either mono or stereo, whatever, and thus all being considered full-blown stereo VSTi instruments (which are the vast mainstream and rather interesting majority, nevertheless:). - The plugin selection dialog (Add Plugin...) now features the option whether the selected plugins should be activated on insert. - Mixer strip titles now have distinguishable type icons, either for audio or MIDI, and shown on all buses and track strips. - Major optimization breakthrough: muted audio tracks aren't streamed any longer, saving precious CPU cycles from decoding, resampling, pitch-shifting, time-stretching, plugin effects, whatever. - Incredible as it might be, audio/MIDI track record monitoring is now mixed (or merged) with rolling playback content, thus not as mutually exclusive between record and playback states anymore; also, track mute/solo states doesn't apply to recording material anymore. - Main form timer slot gets corrected and now independent of current process buffer-size in regard to JACK transport synchronization. - All file references in session state file are now stored as relative paths to main session directory. - DSSI/VSTi plugin presets can now be explicitly recalled from file (ie. Open/load preset) through this new tool button whether visible while in the generic plugin form. - Due to some trouble with newer Qt >= 4.4 applications regarding font size configuration, a new global user option is now available to the rescue: View/Options... /Display/Base font size (default is no-op). - Logarithmic scale is now taken into effect by control parameter sliders, in the generic plugin editor dialog as provided by LADSPA and DSSI plugin types. - MIDI track bank/program does not default to zero (PC#0) anymore. - Second attempt for Qt4.4 build support, regarding the bundled atomic primitives, now corrected and way more seriously :). - Long due DSSI/VSTi plugin host implementation has taken shape for MIDI instruments (eg. soft-synth plugins); DSSI reached its full host implementation and VSTi is already kicking as well (HIGHLY EXPERIMENTAL). - DSSI/VSTi plugin presets may now be stored to external XML files, which should include all parameter values and configuration data chunks, taken as proper state snapshot and subject for recall. - Dedicated audio output bus option is now also accessible for all MIDI instrument plugins, either set globally as a default mode in View/Options.../Plugins/Instruments or in the plugin context menu for MIDI tracks, as an undoable command. - Fixed a potential crash-exception due to freeing a null-pointer, raised on some ever stringent platforms and while adding tracks to empty sessions, which is the same to say this was crashing more than always:). - Loop turn-around is now taken care of, as this has been found missing and causing noticeable gapping when un-muting or changing MIDI track events while in playback. - An off-by-one bug was fixed while inside MIDI cursor backward seek method, which was missing all other events that have the same exact onset timing. - Attempt to load Qt's own translation support and get rid of the ever warning startup message, unless built in debug mode. (transaction by Guido Scholz, while on qsynth-devel, thanks). - Only one application instance is now allowed to be up and running, with immediate but graceful termination upon startup iif an already running instance is detected, which will see its main widget shown up automatically (Qt/X11 platform only). - Clip fades have now a slight transparency. - Avoid loop read-ahead on initial audio clip loading. - Messages file logging makes its first long overdue appearance, with user configurable settings in View/Options.../Logging; options dialog was slightly rearranged and moved the Plugins section into a new tab page. - Audio/MIDI drifting correction was missing its own correct and due (re)initialization whenever playback is (re)started; also, MIDI metering synchronization has been fixed once again. - Fixed session cursor backward seeking, specially applicable when playback passes the end of overlapped clips. - Fixed potential crash when opening bogus audio files. - Time-stretch FIFO buffer implementation is now made generic, as template, fixing a destructor memory leak in the process. - Include legacy headers, stdlib.h and string.h, where necessary to build with stricter gcc/g++ >= 4.3. References: [1] Qt4 (core, gui, xml), C++ class library and tools for crossplatform development and internationalization http://www.trolltech.org/products/qt/ [2] JACK Audio Connection Kit http://jackaudio.org/ [3] ALSA, Advanced Linux Sound Architecture http://www.alsa-project.org/ [4] libsndfile, C library for reading and writing files containing sampled sound http://www.mega-nerd.com/libsndfile/ [5] LADSPA, Linux Audio Developer's Simple Plugin API http://www.ladspa.org/ [6] libvorbis (enc, file), Ogg Vorbis audio compression http://xiph.org/vorbis/ [7] libmad, High-quality MPEG audio decoder http://www.underbit.com/products/mad/ [8] libsamplerate, The secret rabbit code, C library for audio sample rate conversion http://www.mega-nerd.com/SRC/ [9] librubberband, Rubber Band Audio Time Stretcher, an audio time-stretching and pitch-shifting library http://breakfastquay.com/rubberband/ [10] liblo, Lightweight OSC implementation (needed for DSSI GUI support) http://liblo.sourceforge.net/ [11] DSSI, an API for soft synth plugins with custom user interfaces http://dssi.sourceforge.net/ [12] VST SDK, Steinberg's Virtual Studio Technology (see README.VST) http://www.steinberg.net/ [13] QjackCtl - JACK Qt GUI Interface http://qjackctl.sourceforge.net [14] GNU General Public License http://www.gnu.org/copyleft/gpl.html [15] Cakewalk (by Roland), powerful and easy-to-use tools for Windows-based music and sound production http://www.cakewalk.com/ Cheers && Enjoy. -- rncbc aka Rui Nuno Capela

16 years, 9 months

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Linux-audio-announce