Linux-audio-user September 2010

linux-audio-user@lists.linuxaudio.org

150 participants
121 discussions

by Julien Claassen

Hello! What would be the best clocksource for a jackserver using the net or netone interface? Especially, if I want to use alsa_in and als_out for hardware access on my side. At the moment I have it running without any clocksource specified. There are three sources available, at least theroetically (cycle, hpet and system). Kndest regards Julien -------- Music was my first love and it will be my last (John Miles) ======== FIND MY WEB-PROJECT AT: ======== http://ltsb.sourceforge.net the Linux TextBased Studio guide ======= AND MY PERSONAL PAGES AT: ======= http://www.juliencoder.de

14 years

[ANN] Jacker 2010.9.21 - A MIDI tracker for JACK

by Leonard Ritter

A new version of Jacker is out: http://bitbucket.org/paniq/jacker Changes: * Command-Line support. If a song name is passed to Jacker at startup, it will load it. * "install" command. You can now install Jacker globally. * New logo. Less glossy, more elegant. * Fixed a terrible timing error that introduced a jitter as big as the current latency. * Default number of tracks raised from 8 to 16. * Tracks can be renamed. Double-click track to pick a new name. * Mute buttons for each track. Not that reliable at the moment. Last played sound may hang. In this case, stop, then continue playing. * MIDI input to connect your keyboard, to test sounds before you track them. Click on a track label to route your keyboard to the particular output. * Initial JACK transport support. It's useful for synchronizing a recording to a DAW like Ardour. Can be switched on with the "Sync" button in the toolbar. Not too stable on start-up and loop borders. When in trouble, stop, seek, then start.

14 years

Re: [LAU] OT music conducive to programming?

by Nathanael Anderson

I'll often listen to vocal trance on di.fm, my favorite artist from there has been Elucidate, they used to have all their mixes up for download at elucidatemusic.com, but it seems that account was suspended. Nathanael

14 years

Some props for Linux Audio

by Ken Restivo

We played the Connecticut Yankee on Saturday (http://theyankee.com), a venerable and well-known room here for jam bands. The sound guy there has been around for many years and run sound for many, many bands in this genre. He was skeptical when I rolled up with an EEE and a M-Audio FastTrack Pro. By the end of the night, he gave the Linux Audio devs a big praise for the "killer sounds" I was feeding him. He compared them-- favorably-- with the Nord Electro which seems to be the standard board nowadays. My tools of the trade these days are: fluidsynth, beatrix, C*VTS amp, CAPS analog delay, CAPS Monowynth, and Fons' autowah, all glued together with a small C daemon I wrote and a bunch of homegrown Python daemons and tools, and BASH scripts. I'll pass along the thanks to the devs. It's great having "killer sounds" and Free Software at the same time. -ken

14 years

Mulitple sound caards with Jackd

by Jonathan E. Brickman

I was reading here: http://bpmdj.yellowcouch.org/jack.html and became intrigued. A few questions. I would love to be able to run with (say) three ordinary USB2 audio-in ports plus my AudioTrak Prodigy HD2. 1. Can different jackd instances, connect and talk to each other? If I run four instances of Jackd and qjackctl under four different names, can I connect them all? 2. In the example at the web page linked above, an "ALSA multi" device is shown, combining multiple devices into one ALSA virtual device. If memory and CPU is not an issue, will doing this with one Jackd instance work better than four interconnected Jackd instances? It seems to me that this would require a "lowest common denominator" approach to latency-related settings, and combining PCI and USB strikes me as possibly troublesome because of the very different needs involved. J.E.B.

14 years

Re: [LAU] New workstation | DAW pc

by Kjetil S. Matheussen

rosea grammostola: > Hi, > > Processor: > So it looks like I go for a intel i3 processor, with integrated gpu. > Probably a good choice. Intel processors are able to handle more heat than the ones from AMD. > Anyway, I'm a fan of Asus MBs, either Intel or AMD processors. I used >> to work for AMD but frankly right now it's pretty hard to beat Intel's >> Core i5 & i7 offerings. I've got an i5-661, i7-920 and an i7-980x. >> They are all quite nice at different price points and the i5 is very >> energy efficient. >> > > MB: > Does it make sense to go for an Intel motherboard when I have also a Intel > processor? Then it should fit right ;) Like the Intel Desktop Board DH55HC > for example? > Asus is also mentioned pretty often indeed, MSI too. Which is the best, > that's all I have to know ;) > Most motherboards usually works, but Intel is generally less tweakable, which could be important if you want a silent computer. > Power: > When it comes to a power supply I was thinking about Enermax PRO82+ 385W. I > heard that brand is good... > Yes, but also check out www.silentpcreview.com. > Cases: > There are pretty some option these days. Towers, mini-itx, htpc. I like the > style of the Antec ones ( antec Solo-EU Quiet Mini Tower Case, NoPSU, for > example). > Smaller is more mobile and looks nicer, but what is better and more silent? > Bigger is more silent. bigger => colder => more silent. Another (extremly important) factor to look out for is that the PSU is placed at the bottom of the case, and not anywhere near the CPU. Antec, fractal design and coolermaster are some manufacturers providing this design. > Memory: > Any recommended brands, type and speed? > Pick the one with the lowest price/performance ratio, and check that it works properly using memcheck after installation. At notam we have also made this guide/recommendation list for building a silent computer: http://www.notam02.no/projects/index.php?title=Noiseless_PC

14 years

L2Ork North Carolina Mini-Tour

by Ivica Ico Bukvic

Please pardon the cross-posting as well as the belated nature of the message. L2Ork Virginia Tech's Linux Laptop Orchestra is back on tour Sept. 19-21st with performances at Duke University, WSSU, and UNCG as part of the New Music Festival (http://uncgnmf2010.org/). For additional info on performances: http://l2ork.music.vt.edu/main/?page_id=21 About L2Ork: http://l2ork.music.vt.edu/main/ http://l2ork.music.vt.edu/main/?page_id=5 L2Ork on Facebook: http://www.facebook.com/group.php?gid=117918141555131 L2Ork PD resources including custom version of Pd extended and supporting externals (under construction): http://l2ork.music.vt.edu/main/?page_id=56 Should you happen to have any questions, suggestions or concerns, please do not hesitate to contact me. Best wishes, Ivica Ico Bukvic, D.M.A. Composition, Music Technology Director, DISIS Interactive Sound & Intermedia Studio Director, L2Ork Linux Laptop Orchestra Assistant Co-Director, CCTAD CHCI, CS, and Art (by courtesy) Virginia Tech Dept. of Music - 0240 Blacksburg, VA 24061 (540) 231-6139 (540) 231-5034 (fax) ico(a)vt.edu http://www.music.vt.edu/faculty/bukvic/

14 years

meegolem -- adding rpmfusion, fedora and planetccrma repositories to meego

by Niels Mayer

I've created a monster!! (Very well behaved too). I got sick of the total lack of applications on an otherwise decent-seeming http://meego.com Netbook distro, so I took matters into my own hands. For example, I was unable to play MP3's or other "proprietary" encoded media on a meego netbook, which seems like a major fail compared to many other distros (Fedora, Ubuntu) where nonfree codecs are easily made available for download even if they're not included in the original distro. Basically, I wanted all the usual apps I enjoy on fedora plus all the gstreamer plugins needed to decode MP3s, windows-media, etc. I was also missing numerous libs from rpmfusion (e.g. ffmpeg) needed to compile multimedia applications... Since Meego appears to be nearly fedora13 i686, this is relatively easy to do: I added the desired repos to /etc/yum.repos and hand-edited until they were in the shape i wanted them to be in. In order to prevent incompatibilities with a normal meego "yum update" I setup all the repositories as "disabled" and then they can be individially enabled with "--enablerepo" e.g. "yum --enablerepo fedora --enablerepo updates --enablerepo rpmfusion-free --enablerepo rpmfusion-free-updates --enablerepo rpmfusion-nonfree --enablerepo rpmfusion-nonfree-updates --enablerepo planetccrma install qtractor qjackctl jack-audio-connection-kit fluidsynth-dssi" will install the excellent programs http://qtractor.sourceforge.net/ and http://qjackctl.sourceforge.net/ ... After installing, I can plugin a USB keyboard (Akai LPK25), setup routing in qjackctl, and run qtractor (with fluidsynth dssi plugin synthesizer) and hear/record music. Works beautifully, even with the built-in audio on an acer aspireone netbook. Here's my /etc/yum.repos files to set this up (cd / ; tar xvzf ...) http://nielsmayer.com/meego/fedora13+rpmfusion+planetccrma-repos.tgz http://nielsmayer.com/meego/fedora13+rpmfusion+planetccrma-repos.README Programs I've installed and ran/tested with the new repository setup. http://nielsmayer.com/meego/meego-fedora-progs.txt http://nielsmayer.com/meego/meego-ccrma-progs.txt Niels http://nielsmayer.com PS: one of the main hacks needed -- I had to install duplicate libs of the following (with an rpm --force), since the meego readline and openssl were incompatible with that from fedora; both needed to be installed simultaneously to make existing meego progs continue to work, while also allowing new fedora or ccrma progs to run: openssl-1.0.0a-1.fc13.i686 is a duplicate with openssl-0.9.8m-3.1.i586 readline-6.1-2.fc13.i686 is a duplicate with readline-5.2-19.9.i586 Without these libs forced into place, yum tries and fails to nearly reinstall all of fedora over meego However, when these libs are setup, they appear to stop the dependency cascade that happens when the meego starts looking for fedora libs it can't resolve due to version-number differences between distros. PPS: note that my yum.repos setup doesn't interfere with a normal meego update -- you have to explicitly "--enablerepo" in order to get installs from the other repos: [npm@jtm-desktop ~]$ sudo yum update adobe-linux-i386 | 951 B 00:00 meego-core | 4.1 kB 00:00 meego-core-updates | 2.4 kB 00:00 meego-extra | 3.0 kB 00:00 meego-extra-updates | 2.4 kB 00:00 meego-netbook | 3.4 kB 00:00 meego-netbook-updates | 2.4 kB 00:00 meego-non-oss | 3.0 kB 00:00 meego-non-oss-updates | 2.3 kB 00:00 Setting up Update Process No Packages marked for Update

14 years

ambidec: number of speakers and sound card configurations

by Bearcat M. Sandor

I'm still reading up on ambisonics in general, but i'm not sure how a full 3rd order system would be set-up as far as sound card outputs. The screen shots seen here http://www.kokkinizita.net/linuxaudio/adec-pict.html suggest that ambidec can be used with 24 speakers, i'm confused by this idea. I am keeping my system simple and going directly from sound card to amps then i have a max of 8 speaker outputs (it's ambisonics so they are not 'channels' in the conventional sense. There are only 4 channels for b-format). Well my sound card only has 8 speaker outputs. In fact the only 'sound card' i have seen with 24 outputs is something like an RME MADI capable system. So then, would i use 3 sound cards together if i wanted to run ambisonics though 24 speakers? How would i avoid drift? That's what a master-clock is for right? Can you run 3 sound cards with jack and keep them all synced up so that ambidec can send 24 speaker outputs of data to lots of amps or do you need one of these http://www.rme-audio.de/en_products_m32da.php + the companion board. What am i missing here? I'm still a newb. Bearcat M. Sandor

14 years

[ANN] DSSI 1.1.0 release

by Sean Bolton

Announcing the DSSI Soft Synth Interface version 1.1.0 release: http://dssi.sourceforge.net/ DSSI is an audio plugin API for software instruments and effects, based on LADSPA, the ALSA sequencer event types, and OSC (Open Sound Control) communications. DSSI is now supported by six full-featured hosts, several specialized hosts, and at least twenty-four DSSI plugins. (See the above URL for a list.) New in the DSSI 1.1.0 release: * New jack-dssi-host command line option '-c' to set the ALSA and JACK client names. * New 'dssi_list_plugins' and 'dssi_analyse_plugin' command line tools. * Example GUIs have been updated to Qt 4. Bugfixes: * Fixed jack-dssi-host ALSA client ports to be of type 'application'. * Fixed the MIDI CC mapping in trivial_synth. * Fixed an uninitialized variable bug in less_trivial_synth. Enjoy! Sean Bolton

14 years

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Linux-audio-user September 2010