Linux-audio-user December 2012

linux-audio-user@lists.linuxaudio.org

116 participants
113 discussions

by Gene Heskett

It is with a sad heart and wet eyes that I post this link; <http://www.google.com/hostednews/ap/article/ALeqM5iECF1biOKj1z5QP05DXSGYy1a…> He left some truly large footprints in the sands of musical time. Cheers, Gene -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) My web page: <http://coyoteden.dyndns-free.com:85/gene> is up! You cannot see the wood for the trees. -- John Heywood I … [View More]

12 years, 4 months

macbook pro core 2 duo ubuntustudio configuration

by 5tefan

hello, i've recently installed ubuntustudio in parallel with osx on my macbook pro. ubuntu is basically running fine but i'm having troubles getting it to perform equally well as in osx. i'm mainly using supercollider and i have an edirol fa-101 firewire interface. ubuntu resp. the preinstalled ffado-drivers detected the interface immediately and i could use it with supercollider (via jackd(mp)) easily. however, the performance is by far not as good as under osx. a simple test-patch in … [View More]supercollider that was consuming about 30% cpu max. in osx (tested withcoreaudio as well as jack, started via jackrouter) was quickly using up to 100% in linux, producing lots and lots of xruns. after asking on the supercollider-mailinglist someone pointed me to this address: http://wiki.linuxmusicians.com/doku.php?id=system_configuration where i found this test: https://github.com/raboof/realtimeconfigquickscan after executing the test i followed the recommended steps to tune my system. this is the current state: == GUI-enabled checks == Checking if you are root... no - good Checking filesystem 'noatime' parameter... found - warning /media/exchange does not have the 'noatime' parameter set /media/satellite does not have the 'noatime' parameter set /media/scratch does not have the 'noatime' parameter set /media/burn does not have the 'noatime' parameter set /media/G4 does not have the 'noatime' parameter set /media/emergency does not have the 'noatime' parameter set For more information, see http://wiki.linuxmusicians.com/doku.php?id=system_configuration#filesystems Checking CPU Governors... CPU 0: 'ondemand' CPU 1: 'ondemand' - not good Set CPU Governors to 'performance' with 'cpufreq-set -c <cpunr> -g performance' See also: http://linuxmusicians.com/viewtopic.php?f=27&t=844 Checking swappiness... 10 - good Checking for resource-intensive background processes... none found - good Checking checking sysctl inotify max_user_watches... >= 524288 - good Checking access to the high precision event timer... readable - good Checking access to the real-time clock... readable - good Checking whether you're in the 'audio' group... yes - good Checking for multiple 'audio' groups... no - good yes - good. Checking the ability to prioritize processes with chrt... yes - good Checking kernel support for high resolution timers... found - good Kernel with Real-Time Preemption... not found - not good Kernel without real-time capabilities found For more information, see http://wiki.linuxmusicians.com/doku.php?id=system_configuration#installing_… Checking if kernel system timer is set to 1000 hz... found - good Checking kernel support for tickless timer... found - good == Other checks == Checking filesystem types... ok. not found. ** Warning: no tmpfs partition mounted on /tmp For more information, see: - http://wiki.linuxmusicians.com/doku.php?id=system_configuration#tmpfs - http://lowlatency.linuxaudio.org ** Set $SOUND_CARD_IRQ to the IRQ of your soundcard to enable more checks. Find your sound card's IRQ by looking at '/proc/interrupts' and lspci. ... i've even built a new kernel from the latest sources of the stable 3.2 branch (for some reason i wasn't successful building it "preemptive" though the config says it is). however, with this configuration the performance is just as bad as before or even worse. my startup-configuration for jackd(mp) is the following: /usr/bin/jackd -P89 -p128 -t1000 -dfirewire -r96000 -p512 -n3 -i8 -o8 admittedly this may be tight but using a 128 sample buffer at 96 khz is no problem on osx and i am interested in keeping latency as small as possible. but even with a 1024 sample buffer i'm getting xruns and cpu-usage is really high compared to osx. has anyone on this list experience with my particular setup (ubuntustudio, firewire soundcard, macbook pro core 2 duo)? any help highly appreciated, stefan -- View this message in context: http://linux-audio.4202.n7.nabble.com/macbook-pro-core-2-duo-ubuntustudio-c… Sent from the linux-audio-user mailing list archive at Nabble.com. [View Less]

12 years, 4 months

New music: Last Song

by Julien Claassen

Hello everyone! It's not yet the last song, there's still a mile long backlog catalogue. :-) It's just piano and a few vocals. The whole piece is very short, very depressed. Think of Icelandic winter depression and suicide at the piano and you get6 the picture. :-) http://juliencoder.de/nama/last_song.ogg and the mp3: http://juliencoder.de/nama/last_song.mp3 And of course directly from the website: http://juliencoder.de/nama/music.html there's not much in this: My black grand … [View More]

12 years, 4 months

Dance choreography s/w (was csound and inscore examples)

by Rustom Mody

On Mon, Nov 26, 2012 at 12:45 AM, joachim heintz <jh(a)joachimheintz.de>wrote: > 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 … [View More]

12 years, 4 months

Re: [LAU] Music made with linux: Modlys - Julen har bragt

by Atte

On 12/03/2012 03:48 PM, Burkhard Woelfel wrote: > Atte, this is as great as usual, I have to say. Made me drop D, play > along and press repeat over and over again. Thanks for the kind words! Glædelig jul to you also :-) -- Atte http://atte.dk http://modlys.dk

12 years, 4 months

CAPS* as LV2

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 … [View More]

12 years, 4 months

[OT]: Book spam - example 'Qtractor book'

by Lorenzo Sutton

When I stumbled upon this: http://www.amazon.co.uk/Qtractor-Jesse-Russell/dp/5512560239/ref=sr_1_1?s=b… I read that it's not a new scam, and that they probably have around 40,000 'books' of that kind and can do it more-or-less legally (although I'm not totally convinced that the share-alike is totally complied with, that is they should probably release the sources to the books, which as far as I can tell are compilations of wikipedia articles) And this is an additional reason for which I … [View More]

12 years, 4 months

[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, … [View More]

12 years, 4 months

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 … [View More]

12 years, 4 months

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 … [View More]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 [View Less]

12 years, 4 months

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

2003

2002

Linux-audio-user December 2012