Linux-audio-user November 2012

linux-audio-user@lists.linuxaudio.org

104 participants
103 discussions

by Aurélien Leblond

Hi all, Quick question: does the CAPS* plugins suite exist in LV2 format (I'm almost sure the answer is no, as I have looked everywhere, but you never know...). If not, could somebody who knows the code of these plugins let me know how hard it would be to port them to LV2? Are there any pitfalls to look for? Background: a few years back, I created a few synths using AlsaModularSynth - I'm trying to recreate them into Ingen. I already ported the AMS internal modules to lv2 (avw.lv2), and a few other ones that I need are now in fomp.lv2. I use the CAPS amp modelling to make the sound of the synth a bit more natural. Obviously, I know I could plug Ingen output into JackRack for example and use CAPS there for example, but where is the fun in that? :) Incidentally, are there other LV2 plugins that would do at Amp Modelling? Aurélien

13 years

[ANN] Vee One Suite 0.2.0 - The second public release

by Rui Nuno Capela

Greetings, The new gang-of-three's now barely consolidated into one semi-official 'Vee One Suite'. Of course, as time goes by, inexorably, the still self-described 'old-school', 'proto-toys', just become a little older and mature by the day. Eventually, they will rot. But not today. Same old features, still the norm: * a pure stand-alone JACK client with JACK-session and both JACK MIDI and ALSA MIDI input support; * a LV2 instrument plugin. Here follows the news from the change-log, common to all synthv1, samplv1 and drumkv1, unless specifically stated otherwise: - New Reset (all values to preset default) button. - New parameter A / B comparison toggle buttons. - New element exclusive Group sounding setting. (drumkv1) - New Velocity sensitivity configuration control. - Increased baseline polyphony from 24 to 32 voices. - Mouse-wheel support on combo-dial knob widgets. - New command line options: --help and --version information. (stand-alone JACK client forms only) - Voice re-triggering fast-release fix. - LV2 event buffer recycle fix. - Prepared for relative filesystem paths on preset file references. - Audio sample file browser support for old 8.3 file-name formats. (samplv1, drumkv1) - Audio sample waveform widget context menu added. (samplv1) And here are the (old-school) buddies: * 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/synthv1-0.2.0.tar.gz - source package: http://download.sourceforge.net/synthv1/synthv1-0.2.0-6.rncbc.suse122.src.r… - binary packages: http://download.sourceforge.net/synthv1/synthv1-0.2.0-6.rncbc.suse122.i586.… http://download.sourceforge.net/synthv1/synthv1-0.2.0-6.rncbc.suse122.x86_8… * 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/samplv1-0.2.0.tar.gz - source package: http://download.sourceforge.net/samplv1/samplv1-0.2.0-6.rncbc.suse122.src.r… - binary packages: http://download.sourceforge.net/samplv1/samplv1-0.2.0-6.rncbc.suse122.i586.… http://download.sourceforge.net/samplv1/samplv1-0.2.0-6.rncbc.suse122.x86_8… * 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 website: http://drumkv1.sourceforge.net downloads: http://sourceforge.net/projects/drumkv1/files - source tarball: http://download.sourceforge.net/drumkv1/drumkv1-0.2.0.tar.gz - source package: http://download.sourceforge.net/drumkv1/drumkv1-0.2.0-2.rncbc.suse122.src.r… - binary packages: http://download.sourceforge.net/drumkv1/drumkv1-0.2.0-2.rncbc.suse122.i586.… http://download.sourceforge.net/drumkv1/drumkv1-0.2.0-2.rncbc.suse122.x86_8… see also: http:/www.rncbc.org/drupal/node/580 enjoy! -- rncbc aka Rui Nuno Capela rncbc(a)rncbc.org

13 years

Re: [LAU] Xfce - OT: RTC/HPET timer permissions

by Ralf Mardorf

On Fri, 2012-11-30 at 13:52 +0100, Carlos sanchiavedraz wrote: > We are having a considerable inner reorganization of the project along > with the Musix 3 development itself. In addition I'm also preparing a > Musix 3 for portable/touch devices, so there's a lot going on. > By now the last one was Musix 3 beta 2. > > Anyway, we still be keeping and eye on hosts and devices with not much > horsepower having desktops and environments prepared for them. One of > the goals of Musix is not to forget the old PCs and devices, not to > follow the "2 year PCs are dated -> buy a new one" tendency that is > constantly growing. It's strange that a project that claims to be for humanity, computers for the third world etc. does rebuild Debian packages with i386 architecture and only does support Intel-based computers with a 686-class (or newer) CPU. I don't understand this and I don't like it. OTOH I do understand that e.g. FreeBSD does drop AC'97 support, but instead is interested to support the RME HDSPe AIO. It belongs to the manpower and if we can't pay people to maintain support for old hardware or to support new hardware, there's nobody to blame. I don't have the money to pay somebody to support AC'97 for FreeBSD or to support the RME HDSPe AIO for Linux and I don't have the time to do it myself, learning how to program for the kernel is time intensive and can't be done by reading a howto about audio driver writing. So in some cases I agree, the approach "2 year PCs are dated -> buy a new one" is bad, but I understand that there are limits for maintaining all hardware. FLOSS does include "free as in beer", that's good, but the disadvantage is, that there's not enough money to care about everything. Regards, Ralf

13 years

question about qjackctl explicitly setting the wm class name

by Ivica Ico Bukvic

All, This one is a bit convoluted so please stick with me while I try to explain. The problem manifests itself on Ubuntu using Unity (I know, I know, some will claim they don't care about it and I fully appreciate that, but I am not entirely sure this is about Unity). As I've learned by working on pd-l2ork, it appears that Unity assigns windows under the appropriate icon based on window class name (at least that is how tcl/tk calls it). If no class name is specified, Unity gives window class name based on the name of the shortcut that started the app (.desktop file) and herein lies the problem. While typically .desktop files will have the same name as the app, and starting them as such will not be a problem, I have a a shell script built for L2Ork participants that appears as a desktop shortcut. Double-clicking on the shortcut starts the bash script that detects whether qjackctl is already running and if not starts it, then it starts pd-l2ork and uses optional argument to open the right piece. Since I made pd-l2ork explicitly set its own window class using the following command: toplevel $window -class <name> all pd-l2ork windows appear under the icon that I pinned on the Unity launcher. The important thing is this was not the case until I explicitly set the window class name. Before I did this, it would appear under the name of the .desktop file name since Unity did not find any other explicit information on the program, resulting in a new question mark icon that appears on the launcher and program window(s) being pegged under this new icon. On the other hand, since qjackctl does not explicitly set its window class name, it continues to (mis)behave like pd-l2ork used to prior to explicitly setting its window class names. Namely, when I click on the shortcut in Unity launcher/menu, its newly spawned window is pegged under qjackctl icon (as it should). However, when I run qjackctl through the script, it is pegged under the new question marked icon bearing the name of the .desktop shortcut. So, here's the question that's been bugging me: is there a way to explicitly set the window class name in qt as is the case with tcl/tk (FWIW, I would be seriously surprised if one couldn't since I consider qt far superior to tcl/tk) and if so, would it be possible to add this to the future releases of qjackctl? Another completely unrelated qjackctl wishlist question is would it be possible to disable popping up message window and the pop-up error window in the event the qjackctl does not connect successfully connect to jackd via a preferences option as it can be quite annoying for new users to click through those two windows every time attempted start of jackd fails... Many thanks! -- Ivica Ico Bukvic, D.M.A Composition, Music Technology Director, DISIS Interactive Sound & Intermedia Studio Director, L2Ork Linux Laptop Orchestra Head, ICAT IMPACT Studio Virginia Tech Department of Music Blacksburg, VA 24061-0240 (540) 231-6139 (540) 231-5034 (fax) disis.music.vt.edu l2ork.music.vt.edu ico.bukvic.net

13 years

Re: [LAU] Portable/Touch devices Linux friendly

by Paul DeShaw

Have you seen the ZaTaB (http://zareason.com/shop/zatab.html )? Open bootloader, made for hacking. I haven't seen one in person. ~Paul DeShaw

13 years

New music: Another short experiment

by Julien Claassen

Hello everyone1 This is my evil, little experiment. I was trying to coax some evil, heavy sounds out of my NordLead3. I programmed a surprisingly strong rhythm patch and a nice lead. So I fired up Nama, recorded the riff, put on some lead, a little bass - one of my recent dubstep basses -, a small pad and another sound from the presets. Then a spot of drums and we're good to go. On the synth sounds, it's mainly just delay and a little filtering to unclutter the frequencies a bit. http://juliencoder.de/jb/evil_nl3.ogg I suppose, that it will rest there for a week or two. As you can hear, it's a little rough around the edges. But I may use the idea in a real piece of music later on. I was just so amazed at the sound and the way, that a sound can lead you to ideas and a certain style of playing. Feedback as ever is warmly welcome. Kind regards Julien ---------------------------------------- http://juliencoder.de/nama/music.html

13 years

Xfce - OT: RTC/HPET timer permissions

by Ralf Mardorf

On Tue, 2012-11-27 at 09:30 -1000, david wrote: > XFCE works fine here on multiple machines. Version 4.10? What distro and architecture? Regards, Ralf

13 years

Portable/Touch devices Linux-friendly

by Carlos sanchiavedraz

Hello dear all. I'm thinking about purchasing some device that is portable, better if it has a touch screen. I would love your opinion and maybe know about some devices I'm not aware yet that are Linux-friendly or have standard components. The possibilities are: Netbook / Barebone / UMPC / Headless-Board devices: * pros: portable, powerful, versatile, multipurpose, you can use almost any repository and distro (x86/x86_64 arq.), multiple connections, compatible HW out-of-the-box, UMPCs (Ultra Mobile PCs) have touch screens * cons: some don't have (touch)screen, some don't have HD, you need peripherals (mouse, keyboard), poor HW compatibility (touch screen one of the cases), ARM sometimes is not enough for audio Tablet, Mobile: * pros: GUI really touch-driven, don't need peripherals, multi-core chips, some companies have Android tablets but they also publish Debian/Linux images for the device you could tweak (Archos), HW is/could be Linux compatible if it runs on Android, USB compliant HW should run * cons: limited power (ARM sometimes is not enough for audio), don't have typical Linux-audio SW and repositories, scarce quality audio-apps, proprietary connectors, you have to develop a mobile version of your apps, latency is an important issue on Android I guess our friends at Indamixx surely had to deal with something like this at the time, and now there's even more choices with a flood of portable touch devices everywhere. Thanks all in advance. P.D: Here are some examples to illustrate: * Netbooks: http://eeepc.asus.com/ * UMPC: - http://www.umpcportal.com/products/Viliv/X70%20EX/ * Headless-Board devices: http://www.raspberrypi.org/ http://pandaboard.org/ http://beagleboard.org/ * Tablet: - http://www.amazon.com/gp/product/B00422XOEG/ref=as_li_tf_tl?ie=UTF8&tag=fib… - Debian in Archos: http://www.youtube.com/watch?v=yGnkzAiuhUk&list=PL281A181403192C58&feature=… -- Carlos sanchiavedraz * Musix GNU+Linux http://www.musix.es

13 years

csound and inscore examples

by joachim heintz

hi all - this is mainly for csound users, and for people who might want to use inscore from another host, for instance PD or SC. inscore is a cross-plattform and open source application for displaying musical scores in a very general sense: not just a usual score, but also any kind of graphic, text, image, signal etc. inscore is maintained by dominique fober in grame, france. i find it very useful for adding some graphical elements and abilities to csound. the communication between inscore and another application is done via OSC. my examples for csound and inscore can be downloaded at https://github.com/joachimheintz/cs_inscore. the examples show: - the general way of sending data from csound to inscore and back - the adaption of some general inscore examples (demo and sine) - ways of transforming a displayed text, image or score - ways of displaying a signal - ways of displaying csound tables in inscore i have also made some screencast to give an easy introduction to the examples: http://vimeo.com/54160283 (installation) http://vimeo.com/54160405 (examples) german versions: http://vimeo.com/54159567 (installation) http://vimeo.com/54159964 (beispiele) hope you enjoy it! let me know any problems. all best - joachim

13 years

Re: [LAU] [LAD] CAPS* as LV2

by Aurélien Leblond

> I don't know about the caps plugins, however, i had a question on > avw.lv2. I installed those plugin's to work through a tutorial on > synth building in ingen (you may have done the tutorial). That works > fine in ingen. However, if i have that lv2 plugin set installed, > qtractor will not start for me.. if i uninstall the set, qtractor > starts fine. have you seen this behavior? Qtractor doesnt segment > fault or anything.. it just hangs. I tried with both 0.5.6 and current > svn head. > > Have you seen this? No I haven't seen this behaviour, but I haven't been using QTractor that much. What repository did you use for the plugins, LV2 and QTractor?

13 years

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Linux-audio-user November 2012