Linux-audio-user February 2007

linux-audio-user@lists.linuxaudio.org

163 participants
149 discussions

[linux-audio-user] soundblaster soundfont

by pascal lawrynowicz

Hi, I'm running a 64studio and have a trouble using it with Creative Sound Blaster Platinum Live DriveII sound device (pretty old but really cheap for what I need). I'm sure there's soundfonts in the device, allright? But trying using the sound with Rosegarden is impossible? I tried some configuration in the Manage MIDI Devices window but without any success. I know these cards are old, maybe someone from this list used it or still using it and can help. Thanks, PL www.percunivers.com

19 years

[linux-audio-user] Sound splitter

by Chris McCormick

Hey All, Sorry for X-posting, I thought this might be useful for some people. Attached is a Puredata patch for automatically splitting up a wave file into little bits whenever an attack is detected (using [bonk~]). This is useful for remixing music which you don't have the source tracks for. It turns a song into hundreds of little snippets of individual sounds that make up the song. Have fun! Best, Chris. ------------------- chris(a)mccormick.cx http://mccormick.cx

19 years

Re: [linux-audio-user] supported midi drum pads

by esa.linna＠kolumbus.fi

Joshua Boyd <jdboyd(a)jdboyd.net> kirjoitti: > On Thu, Feb 08, 2007 at 02:24:26PM +0200, esa.linna(a)kolumbus.fi wrote: > > Mathieu Sauve-Frankel <msf(a)kisoku.net> kirjoitti: > > >I'm looking for some drum triggers that will work well with linux. > > > > > >So far I am interested in purchasing either an Akai MPD16 or MPD24 > > >or a Korg padKontrol. Does anyone on this list have experience running > > >any of this hardware ? I would be interested in hearing about your > > >experience. > > > > I am happy with cheapo Millennium MD70 Digital Drumset. > > http://www.emvg.net/esa/garage/img017.jpeg > > Does that thing let you attach kick and hihat pedels? > Yep, they are included. Only bad thing is the that the pedals doesn't have velocity control in them. It has also built-in speakers and it works also with batteries! The included sounds are horrible, but hey, my kids love it too.

19 years

[linux-audio-user] terrible soundwith jackd/pro audio apps

by Matt Price

Hi folks, all this is on a laptop running ubuntu feisty with latest updates and a few packages from offsite (e.g. ardour2, traverso). I want to use my laptop to edit and produce rough cuts of audio documentaries. This whole project takes place in the digital domain -- clips are recorded to high-bitrate mp3 and dumped to my hd over usb, and the final product is always either an mp3 or a wav file. I only use my sound card to listen to the piece as I'm working on it, so I'd hoped that the fact that it's a cheap intel_hda sound card wouldn't matter that much. Up to now I've been using audacity 1.3b, and it works ok but I find the interface somewhat clumsy and inflexible. ardour2 and traverso both have much more powerful interfaces, in my opinion. Unfortunately neither of these apps seems to work right for me. In particular, both of them produce very choppy and static-ridden audio, especially ardour2. traverso is also somewhat unstable -- too bad, since it's very fast and I love the interface. traverso works somewhat better with the alsa driver than it does with the jack driver, so naturally my suspicions turn to jackd, with which I have little experience. Here's my setup: -normally run with a lightly-modified ubuntu 2.6.19 kernel, which uses the 'voluntary preemption' switch and hz_250; I've also installed and been trying out the stock 'lowlatency' kernel which enables full preemption and hz_1000. fyi, here's what grep says about the configs: matt@gont:~$ grep -i hz /boot/config-2.6.19-7-ref-generic # CONFIG_HZ_100 is not set CONFIG_HZ_250=y # CONFIG_HZ_1000 is not set CONFIG_HZ=250 CONFIG_MACHZ_WDT=m matt@gont:~$ grep -i hz /boot/config-2.6.20 config-2.6.20-5-generic config-2.6.20-6-lowlatency config-2.6.20-6-generic matt@gont:~$ grep -i hz /boot/config-2.6.20-6-lowlatency # CONFIG_HZ_100 is not set # CONFIG_HZ_250 is not set # CONFIG_HZ_300 is not set CONFIG_HZ_1000=y CONFIG_HZ=1000 CONFIG_MACHZ_WDT=m CONFIG_NO_IDLE_HZ=y matt@gont:~$ grep -i preem /boot/config-2.6.20-6-lowlatency # CONFIG_PREEMPT_NONE is not set # CONFIG_PREEMPT_VOLUNTARY is not set CONFIG_PREEMPT=y CONFIG_PREEMPT_BKL=y CONFIG_DEBUG_PREEMPT=y I usually run jackd from the commandline thus: /usr/bin/jackd -R -dalsa -dhw:0 this is with the realtime-lsm module installed and loaded, running as gid 29, so the user has access to the lowlatency stuff. I have definitely noticed some improvements usintg the lowlatency kernel, but it's all still not very good. This really does surprise, me, so I'm wondering what adjustments I might try to make to my setup to improve jack's performance, and with it, the performance of either traverso or ardour2. I've been messing around with jack options, esp. the --period option (made it as high as I could, 4096) and the -s option (without it I get lots and lots and LOTS of xruns). I think that both of these help a little, but in the end I still have audio which is at the very least clipped and unclear. the same clips sound way way better in audacity running aoss -- so my hardware is clearly capable of handling the audio itself, evne while processing multiple other signals from e.g. amarok or aplay. but with jack it's a no-go, and unfortunately iwth traverso as well. nor do I think my cpu is the issue here -- I have a dell latitude d820, with a core-duo running at 1.83gHz. I really don't need very low latency since I'm not working with music, but with fairly rough vocal tracks and ambient sounds. But I do want a well-funcitoning editor/mixer. I hope this is the right place to ask for help! thanks, matt -- Matt Price History Dept University of Toronto matt.price(a)utoronto.ca

19 years

Re: [linux-audio-user] supported midi drum pads

by esa.linna＠kolumbus.fi

Mathieu Sauve-Frankel <msf(a)kisoku.net> kirjoitti: > I'm looking for some drum triggers that will work well with linux. > > So far I am interested in purchasing either an Akai MPD16 or MPD24 > or a Korg padKontrol. Does anyone on this list have experience running > any of this hardware ? I would be interested in hearing about your > experience. I am happy with cheapo Millennium MD70 Digital Drumset. http://www.emvg.net/esa/garage/img017.jpeg But I guess any standard midi compliant drum trigger will do?

19 years

[linux-audio-user] Musix is being used at Joe Wilson Intermediate School in Cedar Hill, Texas, USA

by Marcos Guglielmetti

Article: http://www.musix.org.ar/wordpress/?p=53 Musix is being used at Joe Wilson Intermediate School in Cedar Hill, Texas, USA The school teacher Marilyn Hagle (marilyn.hagle [ … ] chisd.com) is using Musix in her lessons of music at Joe Wilson Intermediate School in Cedar Hill, Texas, USA. “I am a 5th/6th grade general music teacher and use bootable Musix CDs in our computer lab with students once a week. It rocks! First the students work on the easy rhythm practice exercises in Solfege. Then we go to the Hydrogen Drum Machine program and the students write their own rhythm patterns. I have each class for only twelve weeks a year. This twelve weeks term we are going to try compose a melody and add percussion to it. Note Edit would be the easiest to use with this age group, but in the .5 version it doesn’t load the synthesizer consistantly (could be user error of course :) ). I am downloading your latest release right now, so maybe that will have a fix.” We are working to debug this problem, maybe related to Timidity. “It might interest you to know that the students are now working on composing percussion accompaniments in Hydrogen for the program. We will be singing our school song, “The Lion Sleeps Tonight,” and playing a melody from Beethoven’s 9th Symphony on our recorders . . . all with Hydrogen accompaniments. :)” She have taught also in Minnesota and Chicago, her BA is in music and her MA in media communications, also she is certified to teach music and technology applications in Texas. Well, boys, another woman using GNU/Linux! But, “sadly”, she is married ;) Marilyn started using computers in the classroom in 1982, she moved to Free Software in 1998, and she thinks educators are crazy or lazy for not using GNU+Linux. Just a last note… Marilyn is exited about the new apps that were included into the last Musix’s version, 0.79 (we included them thinking about the needs of artistic schools and rock bands): “I was so excited to download your latest version and see it included Cinelerra and Blender!! Before I took this job, I taught high school computer animation using Blender (fabulous!). One of my educational goals has been to teach kids how to write their own songs and make them into music videos!!” Thanks Marilyn Hagle for using, teaching and spread Free Software! -- Marcos Guglielmetti * Director del desarrollo de Musix GNU+Linux, 100% Software Libre * CD Donwload: (http://www.musix.org.ar/en/) * Videos, programas y otras cosas en: ftp://musix.ourproject.org/pub/musix/ * Reporte de errores a: https://www.musix.org.ar/wiki/index.php?title=Problemas-Bugs *IRC: #musix channel on freenode * http://autosus.wordpress.com/

19 years

[linux-audio-user] supported midi drum pads

by msf＠kisoku.net

I'm looking for some drum triggers that will work well with linux. So far I am interested in purchasing either an Akai MPD16 or MPD24 or a Korg padKontrol. Does anyone on this list have experience running any of this hardware ? I would be interested in hearing about your experience. -- Mathieu Sauve-Frankel

19 years

[linux-audio-user] LAU music site

by Chris McCormick

Hi, I remember following a link from this list to a site that I think had something to do with Dave Philips, which just had a list (RSS feed?) of links to different tunes published by LAU readers. Where is that site? Chris. ------------------- chris(a)mccormick.cx http://mccormick.cx

19 years

[linux-audio-user] Spring reverb?

by Ken Restivo

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I am working on a tune that needs surf guitar. The CAPS AMP IV does a great Fender Twin, and the #4 cabinet in CAPS Cabinet II seems to do pretty well as a 2x12 open-back Fender cab. But the classic surf guitar sound of course includes the high-pitched plinking of a Fender Twin reverb spring slapping against its metal case. If you haven't heard it, it's kind of like entering the V'Ger central core, but really high-pitched and fast, and in 16th notes while double-picking. Picking out a muted barre chord into a spring reverb turned up way too high, you can definitely *hear* the springs. This post hints tantalizingly about someone having created a Csound orc that emulates a spring reverb: http://lalists.stanford.edu/lad/2002/07/0252.html Anyone know if this is true, and where I could find it? I'd love a LADSPA plugin, but a csound orc would do fine if it's RT safe. I don't do VST's, so if that's the only option then I'll probably head down to a guitar repair shop and talk someone into selling me a spring reverb unit out of an old amp, that I can use as a send. That'd be the simple solution. The long, complicated solution would be to take an advanced maths course and learn DSP. Come to think of it, are there any books that could be recommended as a gentle introduction to the math grounding needed for doing DSP. Best would be something geared towards people who know programming but were sleeping during Calculus 101 because they were up all night playing music... - -ken -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (GNU/Linux) iD8DBQFFyi5Ge8HF+6xeOIcRAku9AJoDiasGx/ZeXSCIbCh4HrlT4JcDUgCg9pCQ l6WGk1iKBWyDsRF0nygSa8w= =Y6hr -----END PGP SIGNATURE-----

19 years

[linux-audio-user] [ANN] JackMix 0.2 fresh on the shelfs

by Arnold Krille

taken from http://www.arnoldarts.de/drupal/?q=node/532 : "One step back, two ahead!" After almost two years of silence I managed to put together a new release of JackMix. The name explained: Comparing to jackmix:0.1.0 some experimental features are dropped. On the other hand this release is the first to use scons for the buildsystem and qt4 for the toolkit. Download and installation Download the source here: http://www.arnoldarts.de/drupal/files/downloads/jackmix/jackmix-0.2.tar.gz After unpacking (tar xzf jackmix-0.2.tar.gz && cd jackmix-0.2) call QTDIR=<path to your qt4-dir> scons configure to configure and afterwards call scons to compile the app. Calling scons install will install the binary in the chosen bin-directory but you will probably test JackMix before doing that... If your qt4 is installed in /usr/include/qt4 and /usr/lib/qt4 (as it is on gentoo) you need to add qtlibs=/usr/lib/qt4 to the configuration-command above. I will probably change/extend the qt-check in the future but for now this has to be used. Usage Be sure to have a jackd running, preferable via qjackctl which also has a nice window to connect inputs and outputs like the back of your rack. Next start jackmix. If all is well it will present you with a top-row of controls, a big matrix in the middle and some controls on the right. The top controls are the input gain, the right controls are output gain. The matrix in the middle controls the levels sent from the various inputs to the outputs. If you are tired of the simple potis for each channel and want easier mixing into stereo busses there is help available. Just select the potis you want replaced by using "Select" from the context menu of each control and then use "Replace" in the top-left control you want replaced. If all is working JackMix will choose the biggest possible replacing control (current available controls are mono-to-mono, mono-to-stereo and stereo-to-stereo). You can fill the empty places from the "Edit"-menu. Adding and removing of input- and output-channels is also done from the "Edit"-menu. Please note that if no jackd is running, JackMix will start but not show any controls. You can tell JackMix to create new channels, but nothing will happen. Restart JackMix after starting jackd and go on with your work. Changelog Changes since 0.1: -Using scons instead of autotools/make. -Using qt4 instead of qt3. -Dropped the potis borrowed from the kde-project. They where hard to port to qt4 and the ones from qjackctl are much nicer and where easier to port. - The ability to connect faders is dropped. For future releases this will be replaced by VCA-groups similar to bigger mixing-consoles. Have a nice week, Arnold -- visit http://www.arnoldarts.de/ --- Wenn man mit Raubkopien Bands wie Brosis oder Britney Spears wirklich verhindern könnte, würde ich mir noch heute einen Stapel Brenner und einen Sack Rohlinge kaufen.

19 years

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Linux-audio-user February 2007