Linux-audio-user February 2011

linux-audio-user@lists.linuxaudio.org

157 participants
129 discussions

[LAU] Steinway_IMIS2.2 soundfont (no loops fix)

by Roberto Gordo Saez

This is Steinway_IMIS soundfont, version 2.2. ftp://musix.ourproject.org/pub/musix/sf2/Steinway_IMIS2.2 This version fixes the issue with loops. I hope this is the good one and there are no more remaining major bugs. Marcos is a little busy right now, so he asked me to make this fix. He is thinking to make other improvements, so expect more updates soon.

2 years, 10 months

[linux-audio-user] Sub-harmonic generator? (LADSPA or VST)

by Tim Howard

Hello, Does anyone know of a good plugin that will generate subharmonics? I would like to put a little more low frequency "oomph" into my bass track. Preferrable LADSPA, but VST would work, too. Thanks for any help! -TimH

9 years, 4 months

[LAU] [ANN] KMidimon 0.7.4 released

by Pedro Lopez-Cabanillas

KMidimon is a MIDI monitor for Linux using ALSA sequencer and KDE4 user interface. Changes in 0.7.4 * requires Drumstick >= 0.5 * load and play OVE files (Overture), contributed by Rui Fan * option to request real-time priority on MIDI input thread * option to (not) resize columns while recording * better reporting of file loading errors * revised universal sysex messages translation Copyright (C) 2005-2010, Pedro Lopez-Cabanillas License: GPL v2 More info http://kmidimon.sourceforge.net Sources http://sourceforge.net/projects/kmidimon/files/ Regards, Pedro

12 years, 6 months

Re: [LAU] Simple, easy multithreaded circular buffer library for Linux?

by Kjetil S. Matheussen

Olivier Guilyardi: > > Ken Restivo wrote: >> It has been over 7 years since I last messed around with writing Pthreads applications. >> >> I recall it as a painful, ugly, brain-numbing task. I located an exercise I did back then to address the consumer/producer problem in Pthreads, and just the sight of it is giving me a headache. >> >> I'm being lazy, so instead of researching everything that's out there, I'll ask here: can anyone recommend a relatively simple and painless abstraction library (GPL or LGPL of course) that will give me functions to create a thread in which I can stuff things into a ring buffer, and another thread in which I can pull stuff out of it? >> >> By the way, I know that JACK has a very nice event buffer which is insanely easy to use (and I have), and makes multithreading almost transparent, but this isn't a JACK app. > > I don't know of any abstraction library, but creating/terminating a normal > thread with pthread is really an easy task IMO. It's about 10 lines in C. > > For inter-thread communication there's Portaudio's ring buffer: > http://portaudio.com/trac/browser/portaudio/trunk/src/common/pa_ringbuffer.h > > It can easily be used out of Portaudio (I'm currently doing that), and it > features memory barriers [1] which AFAIK Jack's ringbuffer doesn't. > > One problem with everything Portaudio is this heavy naming scheme. For a simpler > API, you might like my little wrapper: > http://jackbeat.samalyse.org/browser/jackbeat/trunk/src/core/ringbuffer.h > Nice. It's probably quicker to copy the jack_ringbuffer.c file out of jack though. > Portaudio actually also offers a callback mechanism (with hidden thread > creation), so if you're coding an non-JACK audio app, you might want to check it > out. > > For thread synchronization, semaphores (man semaphore.h) are really easy to use. > However, if you need a lock-free equivalent (for realtime, ...) phtread mutex > and especially pthread_mutex_trylock are your friends. > Those friends can be really cranky sometimes though. By using atomic operations instead, it's possible to avoid a lot of headache by not having to synchronize at all. Performance might be better too. Midishare has lockfree atomic functions for lifo and fifi queues: http://midishare.cvs.sourceforge.net/viewvc/midishare/midishare/src/common/…

14 years

[LAU] Le Puzzle du Batteur - The Drummer's 'G'igsaw: GNU Bash + GNU sed replace gvim

by Phil Hézaine

Le Puzzle du Batteur - The Drummer's 'G'igsaw ***** Polymetric editor for Drums and Percussions based on Lilypond + GUI for randomization. (midi timing and/or volume) ****** PACKAGES You have to install: GNU Lilypond >= 2.12.0 http://lilypond.org/web/install/ midicomp 0.0.4 http://midicomp.opensrc.org/midicomp-0.0.4.tar.gz (compile in /usr/local/midicomp... and move midicomp.bin in /usr/local/bin Python 2.6.x with Tk option activated. Already in your Linux distribution. GNU Bash and GNU sed 4.2 by default in your Linux distribution. As default midi config I use Timidity++ 2.13.2 with eawpatches. ****** INSTALLATION Untar the archive. (tar jxvf ....) In your terminal go to your Drummer-s-Gigsaw's repertory. cd /home/....../Drummer-s-Gigsaw and run the bash script: sh INSTALL.sh You are done. ****** * In this new version you no longer need to gvim. Thus you can use your preferred text editor or even a dedicated editor like Frescobaldi or Lilypondtool... * Now you can write all notes values, from whole note (1) up to * one-hundred-and-twenty-eighth note (128) and even dotted values. * The manual is updated. (translated in my terrible English) * Le Puzzle du Batteur/The Drummer's 'G'igsaw is under GPLv3 or + ****** This new version at: http://philippe.hezaine.free.fr/spip.php?article46 Have fun. Phil.

14 years, 6 months

[LAU] [ANN] Taijiguy GigaTron

by Q

Hello everyone It is with great pleasure that I announce the release of the Taijiguy GigaTron, a Mellotron sample set in Giga format. The set is very kindly being hosted by the Linuxsampler team and can be found here: http://www.linuxsampler.org/instruments.html The samples were made by Bernie Kornowicz (aka taijiguy on the KVR Audio forums). The samples were recorded over a number of years and are freely available from taijiguy's site[1]. Some of these samples were packaged in SFZ format with his permission a couple of years ago[2]. Other KVR members have packaged the samples in Kontakt and other formats[3]. With Bernie's kind permission, I packaged the samples into Giga format using Linuxsampler's Gigedit. As the samples are his copyright and I have merely packaged them, the Giga file cannot be released under any sort of free licence, but is (and must remain) free of charge. Each note of each sound is individually sampled, with no looping, in order to preserve the essence of the Tron. A low-pass filter is mapped to the modwheel to emulate the Mellotron's tone control. The Giga file is keyswitched to allow fast selection of the different sounds: "M400 Violins" -- EQ'd Mk II Violins "M400 Violins Yes EQ" -- EQ'd Mk II Violins "M400 Violins Smooth Ryder EQ" -- EQ'd Mk II Violins Cello String Section Mk II Violins M300A (violins) M300B (solo violin) Mk II Brass GC3 Brass Mk II Flute Woodwind2 Combined Choir My thanks go to taijiguy for his wonderful samples, for sharing them and for his kind permission to package them; to the Linuxsampler team for the wonderful software, for fixing a libgig bug that was hindering me, not to mention also for generously hosting the Giga file; to Ryder Duncan for his perseverance in trying to replicate the fantastic sound of the M400 Three Violins[4]; to the developers and maintainers of a number of Linux audio apps which I've made use of in the production of this sample set. Finally, for assistance with road testing, thanks go to my tame keyboard player: some say he gets violent when not surrounded on three sides by synths and that he can transmit midi control changes using telepathy... all I know is, he's called Julien ;-) A technical demo of the sounds is on the LinuxSampler website, but a musical demo of many of the sounds can be found here: http://juliencoder.de/nama/dream_of_the_old_land.ogg http://juliencoder.de/nama/dream_of_the_old_land.mp3 Enjoy. Q [1] www.leisureland.us/audio/MellotronSamples/MellotronSamples.htm [2] http://realmusicmedia.net/Mellotron.html [3] www.kvraudio.com/forum/viewtopic.php?t=304393 [4] http://ryderduncan.com/themusicalbox/?p=33

14 years, 7 months

[LAU] Two QjackCtl questions: JACK autostart and shutdown

by Dominic Sacré

Hi, When I run QjackCtl with the --start parameter to automatically start JACK, this also ticks the corresponding checkbox in the setup dialog. The settings are then saved automatically, and the next time I run QjackCtl without --start, JACK will be started either way. I need to manually open the setup dialog and uncheck the autostart option again. Is this the a bug? I basically want only the command line to determine whether JACK is started or not. Another problem is that when I issue a shutdown from the desktop environment (Gnome), QjackCtl prevents the system from actually shutting down. It is minimized to the systray, but it does not close. On some systems, Gnome will also pop up a dialog box saying something along the lines of "the following application is preventing the system from shutting down...". I then need to close Qjackctl manually, or issue another shutdown command while it is minimized so my system will finally shut down. What's going on here? Why is QjackCtl questioning my decision to shut down the system? This only happens if the systray icon is enabled. Thanks, Dominic

14 years, 10 months

[LAU] "Laid to rest is Pro Tools LE"...

by Mark Knecht

Hi, >From an Avid email I received today quoting an January article in ProAudio Review: "Laid to rest is Pro Tools LE [it will "no longer be developed," offers Avid — Ed]. Now there are Pro Tools and Pro Tools HD, and the gap between the two has narrowed; Pro Tools M-Powered "is still a current product, which hasn't been updated to v.9," explains Avid." Seems to me the new Harrison product, and Ardour in general for the more technically adept new folks potentially coming to Linux, is here at a good time to address Avid not supporting the entry market as much as they did (which wasn't much) during a better economy. I wonder how we could evangelize Linux Audio more effectively to the outside world? - Mark

14 years, 10 months

[LAU] Call for submissions: Music made with Linux - Best of 2010

by Patrick Shirkey

Hi, I'm compiling the 2010 mix at the moment. Unfortunately I lost a few months worth of data between Jan - May. If you released a track during that time and you would like it to be considered for the 2010 mix please send me a link so I can download it again. Also if you have unreleased tracks or tracks that are not easily downloaded then I may have missed them. So feel free to shoot me a direct link if you want to get them into the official mix. The past couple of years I ended up with about 40 tracks that made the cut. It would be nice to have even more this year. There is no discrimination on genre/content. The criteria is if it sounds good and/or represents an original or unique idea compared to the rest of the tracks in the final mix. All the tracks are hosted on djcj.org http://djcj.org/audio/lam/ and we even have an icecast stream at linuxaudio.org which Robin Gareus setup last year. http://radio.linuxaudio.org/ Cheers. -- Patrick Shirkey Boost Hardware Ltd.

14 years, 10 months

[LAU] gx_head accessibility question/request

by S. Massy

Hey again, Day before yesterday I decided to give gx_head a whirl to see whether it would be accessible under orca and was pleased to find out that it mostly is. (orca is a screen-reader, btw) I had a lot of fun playing and jamming around. There is only one problem: while the buttons and sliders are recognised as such, most of them are not labelled, requiring one to "prod and find out" which by and large isn't too difficult. Pre/post-gain and bass/mid/trebble aren't too hard to guess, and I guess I found the selector that changes cab simulation, but I'd still like it if anyone could walk me through the various selectors/sliders, especially for the effects, and tell me what they are. Also, I was wondering whether it might be considered for future releases to associate a text label with each GUI slider/button/etc. BTW, has anybody found a good clean setting with gx_head? I could get plenty of lovely crunch and grit, but didn't have much success in the clean department. Cheers, S.M. --

14 years, 10 months

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Linux-audio-user February 2011