Linux-audio-user September 2014

linux-audio-user@lists.linuxaudio.org

99 participants
80 discussions

by Philipp Überbacher

Hi again, what is currently the best (least jitter, reliable) way to bridge alsa and jack midi? The goal is rather simple, I want to be able to use my e-piano (connected through USB) to play aeolus. Or rather allow a friend of mine who actually knows how to play church organ to play it. The keyboard shows up as alsa midi device while aeolus requires jack midi input. It seems that aeolus can use alsa midi when run with the -A option. I got it to work somewhat using 'a2jmidi -e' but it turned out to be rather unreliable. When I ran jack with a rather low latency setting and got the first xrun a2jmidid crashed. Yes, xruns shouldn't happen and there are some more thing I could do to avoid them, but programs still shouldn't crash once an xrun occurs. I also seem to remember that there's a better way to do this in the meantime, however, the recently posted guide still only mentions a2jmidid: http://lsn.ponderworthy.com/doku.php/audio_with_midi_on_linux On a sidenote: A rather funky thing that I noticed when playing with this is that patchage (1.0.0) reliably segfaults as soon as I shut down aeolus (0.9.0). I'm not sure which program is at fault, maybe one of you knows so that I can file a proper bug report at the right place. Regards, Philipp

10 years, 10 months

A tune to share

by jonetsu＠teksavvy.com

Hello all, I would like to share this that I made. Any comments welcomed ! About the music, the recording, etc... Although on youtube, there's no video, only audio: http://www.youtube.com/watch?v=fqiJT17m1Xs Recorded using Ardour, mixed using Jamin. Linux standard soundfounts for congas, Yamaha grand and warm pad, using Qsynth. 2 Takamine acoustic guitars. Acoustic bass guitar. Soundfount congas played using the rubber pads of an Axiom 25 keyboard. Audio card is 1010LT, mic was M-Audio Pulsar. Freeverb on acoustic guitars, Echo Delay on solo guitar. Multiband EQ on all acoustic instruments. Cheers.

10 years, 10 months

Re: [LAU] Bridging alsa and jack midi

by Stéphane Letz

Le 26 sept. 2014 à 23:42, linux-audio-user-request(a)lists.linuxaudio.org a écrit : > Message: 12 > Date: Fri, 26 Sep 2014 19:21:13 +0000 > From: Fons Adriaensen <fons(a)linuxaudio.org> > To: Paul Davis <paul(a)linuxaudiosystems.com> > Cc: linux-audio-user <linux-audio-user(a)lists.linuxaudio.org>, Philipp > ?berbacher <murks(a)tuxfamily.org> > Subject: Re: [LAU] Bridging alsa and jack midi > Message-ID: <20140926192113.GA434(a)linuxaudio.org> > Content-Type: text/plain; charset=us-ascii > > On Fri, Sep 26, 2014 at 10:50:06AM -0400, Paul Davis wrote: > >> the developers of jack2 have so far not bothered to integrate the "shared" >> repository for jack tools into their source code. > > And they are still using the completely broken resampling code > from alsa_in/out wherever this function is needed. > > At my new work place (the research center of a very big > corporation) I'm currently trying to push jack2 on Windows > as a solution for some of the problems we're facing. > We've been doing some tests this week, and the showstopper > is the really abysimal performance of all of the jack2 tools > that depend on resampling. > > If the jack2 devs don't fix this and do it very soon, then > we will - by porting zita-ajbridge (where the 'a' will stand > for ASIO) and zita-njbridge to Windows. And probably also by > rewriting the the backend and make it use ASIO directly > instead of going through Portaudio. Why on earth should > a system such as Jack support anything but ASIO ? > > Tschuss, > Hi Fons, The "developers of jack2" (…) don't have time right now to invest for this resampling code rewrite, but will be very interested to zita-ajbridge working. Concerning direct ASIO backend support, attached is some files I started to write some months ago, taking the LinuxSampler code base as a starting point. But the code is absolutely not ready as has even not been compiled…. Would "the research center of a very big, corporation" be ready to put some money to have theses development be accelerated ? (in any case, I can at least compile any new code base on the Windows development machine we have, and publish new Windows binaries, and probably do the same on OSX). Stéphane

10 years, 10 months

tagging sample libraries: tmsu

by renato

Hi, since I've seen this problem mentioned here before, I just wanted to give a heads up regarding this program I've recently discovered, tmsu. It lets you tag files, and you can later use these tags in any program, since it will create a virtual filesystem (using fuse), with directories for tags and queries (like "show me all field recordings of stormy weather done in 2013", provided of course you tagged the files with the relevant information), all on the fly (to create a query you just create a directory). It seems very nice for the task, very KISS, though I have just played shortly with it http://tmsu.org/ have fun, renato

10 years, 10 months

sound fonts/patch files

by LM

I'm trying to find some sound fonts/patch file sets to use with programs like Timidity and to figure out what licenses they're available under. Of course, there's the freepats collection ( http://freepats.zenvoid.org/ ). freepats-20060219.tar.bz2 has GNU GPLv2 license. Am also looking for other collections with Free licenses. I ran across timidity_tiny at http://edge.beemulated.net/utils/index.php which looks really interesting because it's lightweight. However, was unable to find a license with it. Tracked earlier copies of the files down to KDEMultimedia's kmidi which says the license on kmidi is GPLv2 or later. With further checking, I found out many of the files were from timidity_wow_samples.zip, timidity_drums_samples.zip, timidity_base_samples.zip. One sample was from propats 3 collection. Not finding much on licensing for any of those files. Does anyone have suggestions for lightweight (or other) instrument collections/patch files/soundfonts with Free licenses? Thanks.

10 years, 10 months

New EP made in Linux: A Passionate Tribute

by Carlo Ascani

"A Passionate Tribute" is a 3 song EP made in Linux. You can hear that on bandcamp: https://lotfi.bandcamp.com/album/a-passionate-tribute-ep or download the tracks from: http://carlorat.me/carpenter.flac http://carlorat.me/fulci.flac http://carlorat.me/bava.flac This is totally hobbystic, I made it just for fun, in my home. My setup looks like this: http://i.imgur.com/9cpuZLe.jpg And yes, the amiga is playing as a soft synth in some part. The acoustic drums were recorded in another house, and they are these: http://linux-audio.4202.n7.nabble.com/A-short-story-from-zero-to-recording-… Here is a couple of words about song meanings: http://carlorat.me/quote/apassionatetribute/ Cheers -- Carlo Ascani | carlorat.me skype: carloratm irc: carloratm@freenode

10 years, 10 months

Slow but pitch-correct video playback

by Philipp Überbacher

Hi there, I encountered a nice piano learning video including hands and animated keys, but since it is playing at original speed it is way to fast for me to learn that song. In case anyone is interested, it's this video and I think it's rather nicely done (don't hate me for the music :P): https://www.youtube.com/watch?v=Ej6MF5KjuOc I found one way which sort of works (after settings LADSPA_PATH) but it sounds quite horrible. Is there a better way to do this? http://markplusplus.wordpress.com/2006/10/01/pitch-correct-play-speed-with-… Is there a stretchplayer for video? Regards, Philipp

10 years, 10 months

Problems with real time kernel, thermal throttling and cpu freq governors.

by Rafael Vega

Hi all, I'm re-posting this issue here since there are more real-time kernel users here than in other lists/forums and I'm hoping to get attention into this issue. In short, when running the RT kernel from Debian Jessie repos (3.14-2-rt-amd64), the scaling governor cannot be changed and the system hangs if the cpu temperature reaches the thermal throttling threshold. More info here: http://forums.debian.net/viewtopic.php?f=5&t=117613&p=554270#p554270 Has anyone experienced this issue? Anyone else running that kernel version from the Debian repos? Any other RT kernels for Debian out there that I could test? Thanks! -- Rafael Vega email.rafa(a)gmail.com

10 years, 10 months

express card on new laptops

by Len Ovens

Is expresscard the slot that can have a firewire interface? It seems that some of the "rugged", "milspec", (expensive) laptops like this one still have it: http://www.dell.com/us/business/p/latitude-7404-laptop/pd?p=latitude-7404-l… I was actually looking to see if there were laptops that came with plugs with a high insertion cycle rating.... but there is no mention of that. -- Len Ovens www.ovenwerks.net

10 years, 10 months

Re: [LAU] [LAA] Announcing LibreMusicProduction.com

by Bent Bisballe Nyeng

(Sorry for bluntly moving this thread to LAU list for my reply) Thank you very much for the amazing site. I think this more or less exactly what this community needs (and maybe the result of you questionaire from a while back Gabriel?). One thing I would very much like on the site is a subscription for email notification on new articles. Would this be possible? I know you explicitly asked for feedback to go through the forms on the website, but I figured this might be of interest to others in the LAU community as well. Kind regards Bent Bisballe Nyeng On 08/17/14 12:18, Gabriel Nordeborn wrote: > Hey everyone! > > It's our great pleasure to announce Libre Music Production > (http://www.libremusicproduction.com). Libre Music Production (LMP) is a > web portal and resource aimed at helping you make music using free and > open source software. While the portal was initially developed by a > small group of people, the aim and ambition is that LMP becomes a > community project where we all help out in building a great resource for > making music using FLOSS software. At launch we have over 10k words > worth of articles and guides, as well as a little over 2 hours of > recorded video material. > > We've prepared a press release that details more about this project at: > http://libremusicproduction.com/pressrelease > > We'd greatly appreciate any help in spreading the word about this > resource, as well as any help with contributing content and so on. > Please feel free to copy+paste the press release as you'd like, and > thank you very much for any help! > > Any other feedback is also greatly appreciated. Please use the contact > forms on the website :) > > Have a nice day! > > > _______________________________________________ > Linux-audio-announce mailing list > Linux-audio-announce(a)lists.linuxaudio.org > http://lists.linuxaudio.org/listinfo/linux-audio-announce >

10 years, 10 months

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Linux-audio-user September 2014