Linux-audio-dev

linux-audio-dev@lists.linuxaudio.org

4 participants
7502 discussions

by Harry van Haaren

Hey all! I have a simple enough question, but I don't know the best practice for solving it, so figured I'd ask. There's an LV2 synth running in a LV2 host. The synth exposes its operation trough control ports. Option 1: The plugin can bind incoming MIDI events to these control ports values, allowing "standard" MIDI maps to be made for the synth. Use cases include using the synth on another machine with the same hardware: easy operation, layout identical to before. Downside: these MIDI binding values are hard coded in the plugin, and can't be changed. Also the host may update the control port (which has been effected by the MIDI stream) and causes a parameter jump. Option 2: The host has to implement its own form of binding the MIDI events to the control ports. Downsides: the plugin has no control over what causes what effect, so no standardized maps can be made. Application specific MIDI mapping... which is nasty. I think the "safe option" is number 2, each application sorts this thing out itself, and the user has to map the same synth per host. The MIDI mapping situation on Windows and MacOS is terrible (IMO), with various different "software re-map" features like Novation Automap, and Bores midi translator just getting in the way even more. Can anybody see a solution to using the same MIDI map for the same instrument in different software, without hard-coding it in the plugin? Or another solution? -Harry

12 years, 4 months

Re: [LAD] [LAU] jackdbus eating 100% cpu after a while

by Florian Paul Schmidt

Hi James, On 02/09/2013 01:11 PM, James Stone wrote: > Hi Flo, I am also running Ubuntu 12.10 and using jackdbus. It is > really nice for things like playing along to youtube videos.. On my > computer, I noticed that jack does have a tendency to lockup after a > while when jackdbus is running. I had the feeling that it might be > something to do with latency, as I found it is impossible to start > jack at very low latencies with jackdbus running. I was using 128 > samples which seemed to be OK, but at that latency, the lockups > occurred after some time. I tried increasing latency to 256 > samples/44.1k. Following this, it seems to operate fine (at least I > have had no more dropouts), but it is all a bit fiddly to get it to > work properly, and I would probably disable pulse if I wanted to do > serious recording etc without the mixing capabilities that jackdbus > adds.. James I use very large period sizes, 1024 or even 2048. The problem of jackd starting to eat 100% cpu occurs usually when I'm done with my current work (recording something or fiddling around) and just leave it running idly. Then when I return to my computer after a few hours jackd sits there happily eating cpu. It has the side effect of heating my room, but heating with electricity is expensive and thus I'd rather avoid it ;D Have fun, Flo -- Florian Paul Schmidt http://fps.io

12 years, 4 months

jackdbus eating 100% cpu after a while

by Florian Paul Schmidt

Hi, I was a long term jackd1 user and my first action on a new linux installation (mostly using Ubuntu) was normally to remove pulseaudio as it was badly configured and/or buggy. Things have changed and I really started to like PA for everyday stuff. And then jackdbus came along which together with the device reservation API and the jackd sinks promised to make using these two things together more easy. This mostly works fine, except for the device reservation bug in PA which is easy to work around though: - Make sure no audio process is actively using the soundcard you want jackd to use - Run pulseaudio -k - Run jack_control start I have noticed some issues with jackdbus though: a] jack_control start sometimes doesn't work at all after the first time it failed to aquire the device. A killall -9 jackdbus is in order to restore it b] after some hours of operation jackdbus starts to eat 100% cpu on two of my four cores. Are these known issues? I use Ubuntu 12.10 and jackd: fps@mango 12:08:21 .../Games/Xonotic/ $ jackd -v jackdmp 1.9.9 [...] How to diagnose the 100% cpu thing more closely? The ~.log/jack/jackdbus.log shows nothing suspicious. Thanks and regards, Flo -- Florian Paul Schmidt http://fps.io

12 years, 4 months

[ANN] Vee One Suite 0.3.1 - One second bug-fix release

by Rui Nuno Capela

hello there, a new batch of the Vee One Suite of old-school software instruments, primarily slated for Linux, featuring synthv1 [1], a polyphonic synthesizer, samplv1 [2], a polyphonic sampler and drumkv1 [3], a drum-kit sampler, are on the loose now. as previously, they come in a couple of expressions, such as: - a pure stand-alone JACK client with JACK-session and both JACK MIDI and ALSA MIDI input support; - a LV2 instrument plugin. interesting changes for this bug-fix release are: - improved filters parameter sensitivity (cutoff, reso). - envelope generators stage curves now gone a little more old-schooler and analog-like, hopefully improving on the punchy and click-less sound front. - experimental LV2 Time designated port support (Delay BPM). - preparations for Qt5 migration. - sample loop points were missing the LV2 UI state restoration. (samplv1) all are free, open-source Linux Audio software, distributed under the terms of the GNU General Public License (GPL) version 2 or later. enjoy the Carnival! [1] synthv1 - an old-school polyphonic synthesizer synthv1 is an old-school all-digital 4-oscillator subtractive polyphonic synthesizer with stereo fx. LV2 URI: http://synthv1.sourceforge.net/lv2 website: http://synthv1.sourceforge.net downloads: http://sourceforge.net/projects/synthv1/files - source tarball: http://download.sourceforge.net/synthv1/synthv1-0.3.1.tar.gz - source package: http://download.sourceforge.net/synthv1/synthv1-0.3.1-8.rncbc.suse122.src.r… - binary packages: http://download.sourceforge.net/synthv1/synthv1-0.3.1-8.rncbc.suse122.i586.… http://download.sourceforge.net/synthv1/synthv1-0.3.1-8.rncbc.suse122.x86_8… [2] samplv1 - an old-school polyphonic sampler samplv1 is an(other) old-school all-digital polyphonic sampler synthesizer with stereo fx. LV2 URI: http://samplv1.sourceforge.net/lv2 website: http://samplv1.sourceforge.net downloads: http://sourceforge.net/projects/samplv1/files - source tarball: http://download.sourceforge.net/samplv1/samplv1-0.3.1.tar.gz - source package: http://download.sourceforge.net/samplv1/samplv1-0.3.1-8.rncbc.suse122.src.r… - binary packages: http://download.sourceforge.net/samplv1/samplv1-0.3.1-8.rncbc.suse122.i586.… http://download.sourceforge.net/samplv1/samplv1-0.2.1-8.rncbc.suse122.x86_8… [3] drumkv1 - an old-school drum-kit sampler. drumkv1 is (yet) an(other) s an old-school all-digital drum-kit sampler synthesizer with stereo fx. LV2 URI: http://drumkv1.sourceforge.net/lv2 website: http://drumkv1.sourceforge.net downloads: http://sourceforge.net/projects/drumkv1/files - source tarball: http://download.sourceforge.net/drumkv1/drumkv1-0.3.1.tar.gz - source package: http://download.sourceforge.net/drumkv1/drumkv1-0.3.1-4.rncbc.suse122.src.r… - binary packages: http://download.sourceforge.net/drumkv1/drumkv1-0.3.1-4.rncbc.suse122.i586.… http://download.sourceforge.net/drumkv1/drumkv1-0.3.1-4.rncbc.suse122.x86_8… see also: http://www.rncbc.org/drupal/node/615 cheers! -- rncbc aka Rui Nuno Capela rncbc(a)rncbc.org

12 years, 4 months

[ANN] Sqorlatti 0.1.3-b (music notation editor)

by M Donalies

Currently, it's just for display and editing. There's no playback yet. And it's still pre-alpha, so you can expect it to crash without expending too much effort. Just a few bug fixes. I've included the changelog to 0.1.3 as well, since the announce didn't make the list. If all goes well, the next release should be sometime in March. Website: http://sourceforge.net/projects/sqorlatti Download (bzipped source tarball): http://downloads.sourceforge.net/sqorlatti/Sqorlatti-0.1.3-b.tar.bz2 Changes in Sqorlatti 0.1.3-b: * Fixed bug when trying to edit data in Score Dialog. * Set initial background color of Staff Editor to white. Changes in Sqorlatti 0.1.3: * Converted configure/build system to cmake. See the INSTALL file for more information. * Added default tab tunings for std guitar and bass to Score. * Added combo to select tab tuning to track dialog. * Cleaned up some C-style casts and fixed some sloppy code involving const. * Added edit modes (select, insert, and delete) to StaffEditor. * ToolBar in StaffEditor with common note durations. For use in insert mode. * Allow add/remove notes to chords and tuplets. * Cleaned up Staff Editor drag & drop a little. There's still not much consistency checking, though. * Added some user preferences, in particular, Staff Editor font size and background color. These preferences get stored in $HOME/.config/Sqorlatti (the usual place for Qt to put QSettings data). On the initial run, you probably want to change the Staff Editor background color. You can do this through the main window menu Tools->Preferences->Staff Editor. Known problems: * cmake cleanup not very good when doing in-source builds. * Undo for inserting events and containers through MasterView not combined into a macro, so separate commands are issued for insert and edit. It's not really wrong, just inconvenient and confusing. * Editing tab tunings not yet implemented. -- 7:8

12 years, 4 months

Re: [LAD] [LAU] So what do you think sucks about Linux audio ?

by Pedro Lopez-Cabanillas

On Tuesday 05 February 2013 18:26:24 David Baron wrote: > My main complaint is not really about Linux, per se, but the whole DAW, > etc., scene: Lack of interoperability! > > I have a lot of Cakewalk files from the Windows days. Cannot do anything > with them besides play two tracks in Cakewalk-Express using WINE. That is because you have been ignoring that KMidimon reads and plays Cakewalk WRK files. And my library drumstick-file is available under a free license, offering this functionality to any interested developer. For me, this says everything about the worse problem in the Linux audio development community. Regards

12 years, 4 months

[ANN] Sqorlatti 0.1.3 (music notation program)

by M Donalies

Currently, it's just for display and editing. There's no playback yet. And it's still pre-alpha, so you can expect it to crash without expending too much effort. Website: http://sourceforge.net/projects/sqorlatti Download (bzipped source tarball): http://downloads.sourceforge.net/sqorlatti/Sqorlatti-0.1.3.tar.bz2 Changes in Sqorlatti 0.1.3: * Converted configure/build system to cmake. See the INSTALL file for more information. * Added default tab tunings for std guitar and bass to Score. * Added combo to select tab tuning to track dialog. * Cleaned up some C-style casts and fixed some sloppy code involving const. * Added edit modes (select, insert, and delete) to StaffEditor. * ToolBar in StaffEditor with common note durations. For use in insert mode. * Allow add/remove notes to chords and tuplets. * Cleaned up Staff Editor drag & drop a little. There's still not much consistency checking, though. * Added some user preferences, in particular, Staff Editor font size and background color. These preferences get stored in $HOME/.config/Sqorlatti (the usual place for Qt to put QSettings data). On the initial run, you probably want to change the Staff Editor background color. You can do this through the main window menu Tools->Preferences->Staff Editor. Known problems: * There's still a Sqorlatti.pro file in the tarball. It's out of date and missing some files. The new build system uses cmake instead. * cmake cleanup not very good when doing in-source builds. * Staff Editor background initially set to yellow. It will default to white next release. * Clip Dialog context menu for editing events is in wrong location. * Undo for inserting events and containers through MasterView not combined into a macro, so separate commands are issued for insert and edit. It's not really wrong, just inconvenient and confusing. * Editing tab tunings not yet implemented. -- 7:8

12 years, 5 months

Mudita24 release 1.1.0

by Tim E. Real

Hello. I finally rolled an archive. This is for the benefit of ye kind packagers out there, and everyone, as I notice the version in Ubuntu for example is still the old version which has broken alsactrl profile support - can't save/load profiles. There has been no changes to code for a while, except that I just now removed the SVN version from the About page. However, the most recent major changes from a while ago are important, such as profile fixes, and are not in the last release, so it is important to get this release out there. Mudita24 is a modification of the Linux alsa-tools' envy24control(1): an application controlling the digital mixer, channel gains and other hardware settings for sound cards based on the VIA Ice1712 chipset aka Envy24. Project home page: http://code.google.com/p/mudita24/ Download source code: http://mudita24.googlecode.com/files/mudita24-1.1.0.tar.gz Let us know if any problems. Thanks. Tim. The Mudita24 project. The MusE project.

12 years, 5 months

LAC 2013: the Linux Audio Conference - Deadline Extension

by IOhannes m zmoelnig - LAC 2013 Organizing Team

sorry for >< please >> << Hi all, [sorry for the previous empty mail; let me try again...] The Linux Audio Conference submissions deadline has been extended! It is now February 17th, 2013 (23:59 HAST) So, if you were considering to submit a paper but couldn't make up your mind yet, here is your chance to become active! Never forget that this conference lives through the people participating in it. FEBRUARY 17th is the new deadline for all submission types: papers, music, installations, workshop proposals. Check out the link below more info: http://lac.linuxaudio.org/2013/participation Please spread this information to anyone who might be interested. If you have any questions, drop us a line at lac(a)linuxaudio.org We are looking forward to seeing you in Graz in May! Thanks and happy last-minute music-and-paper-submissions, on behalf of the LAC2013 organization team, IOhannes m zmoelnig --- LAC 2013: the Linux Audio Conference May 9-12, 2013 @ IEM, Graz/Austria lac(a)linuxaudio.org http://lac.iem.at

12 years, 5 months

LAC 2013: the Linux Audio Conference - Deadline Extension

by IOhannes m zm??lnig - LAC 2013 Organizing Team

sorry for >< please >> << Hi all, The Linux Audio Conference submissions deadline has been extended! It is now February 17th, 2013 (23:59 HAST) So, if you were considering submitting a paper but couldn't make up your mind yet, here is your chance to become active! Never forget that this conference lives through the people participating in it. FEBRUARY 17th is the new deadline for all submission types: papers, music, installations, workshop proposals. Check out the link below more info: http://lac.linuxaudio.org/2013/participation Please spread this information to anyone who might be interested. If you have any questions, drop us a line at lac(a)linuxaudio.org We are looking forward to seeing you in Graz in May! Thanks and happy last-minute music-and-paper-submissions, on behalf of the LAC2013 organization team, IOhannes m zmölnig --- LAC 2013: the Linux Audio Conference May 9-12, 2013 @ IEM, Graz/Austria lac(a)linuxaudio.org http://lac.iem.at

12 years, 5 months

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Linux-audio-dev