Linux-audio-user November 2010

linux-audio-user@lists.linuxaudio.org

123 participants
93 discussions

by Ken Restivo

I downloaded and installed the latest Denemo 0.8.2, and I'm very confused as to how to get it to work with ALSA MIDI. There's a menu command under "Input", that says "MIDI Input". I select it, and it gives an extraordinarily unhelpful error message: "Could not start MIDI input". Okk, great, I look around for a preference or settings menu item somewhere which would allow me to configure MIDI input, but, alas, nothing. Same with MIDI output: I want to send it to my ALSA MIDI synths. Any ideas? Sorry for being so lazy, but I'm not in the mood to go surfing through the source code at the moment. -ken

13 years, 5 months

Introductory seq24 tutorial

by Leigh Dyer

Hi all, I've just posted a video tutorial for seq24 -- it discusses what seq24 is, and what it isn't, and then proceeds to demonstrate the basics of building and playing patterns. If you've tried it in the past and been confused by its somewhat unique interface, hopefully this will get you past that initial confusion. The direct Youtube link is here: http://www.youtube.com/watch?v=J2WDHS1wYeM and the post about it on my blog, which includes a downloadable copy of the video in WebM format (playable in VLC 1.1, or Firefox 4 beta, among other players), is here: http://wootangent.net/2010/10/linux-music-tutorial-seq24-part-1/ Thanks Leigh

13 years, 5 months

[ANN] seq24 0.9.1 released

by Guido Scholz

Dear seq24 users, a new seq24 release is out, second time published by the Seq24team, assisted (or driven?) by a group of engaged contributors. https://edge.launchpad.net/seq24/ This release fixes several bugs and provides some new features which are already prominent due to excellent tutorial videos (thanks to Leigh Dyer). All users should upgrade to 0.9.1. Please find source tarballs on the release page: https://edge.launchpad.net/seq24/trunk/0.9.1 NEWS ==== seq24-0.9.1 (2010-11-08) Fixed Bugs * Fixed error if path for last used directory is not properly set * Fixed adding notes on the beginning when MIDI record is on and not playing sequence * Fixed buffer overflow caused by string handling (tool menu) * Fixed file save as crash * Fixed MIDI sysex event reading * Fixed error if path for last used directory is not properly set * "Cancel" option added to "Save file?" question New Features * Support for MIDI clock synchronization * Support for mute groups * Key binding editor * Optionally show shortcut key label on sequence icon * Fruity loop mouse interaction mode added * Monophonic step editing on sequence * Polyphonic step editing General Changes * A lot of code cleanups * Support for (lost) Win32 platform added * Optimized redraw for sequencer roll background (from Win32 version, Rob Buse) * Adaptations for jack2 applied Enjoy Guido -- http://www.bayernline.de/~gscholz/ http://www.lug-burghausen.org/

13 years, 5 months

Looking for hosting

by shanerich＠email.com

Hi all, As we are about to start pushing a commercial release that was produced with about 80% free software and loads of advice from this list, I was thinking that it would be nice to have a quiet place where _members_of_the_LAU_list_only_ could download either the released tracks or perhaps some stripped-down Ardour sessions. Along with maybe a blog-like page where I could jot down some technical notes about each track (software used, how I got a particular effect, work-flow etc). Would be on a "pay you when/if we start making money" kind of deal. Ongoing if things work out. I know nothing about servers or web-design. Prefer private replies. - Shane Richards

13 years, 5 months

USB audio interface and a buggy USB controller

by Joan Quintana

It seems that my new laptop has a buggy USB controller (lspci says 'Intel Corporation 5 Series/3400 Series Chipset USB2') and this causes JACK to fail in 'duplex mode' and 'only recording mode' $ /usr/bin/jackd -dalsa -dhw:2 -r44100 -p1024 -n2 ... ALSA: could not start playback (Broken pipe) DRIVER NT: could not start driver ... I have an Edirol UA-25EX. I read about this problem in: *http://ubuntuforums.org/showthread.php?p=9812317 where points to *http://lists.linuxaudio.org/pipermail/linux-audio-user/2010-June/070365.html Any idea to deal with the problem? What to do? 1) Try to have the money back 2) Try to use a USB_2_ExpressCard converter like this one? http://www.delock.com/produkte/gruppen/Express-Card/Delock_Express_Card_to_… -> it says linux compatible If this works, the performance will be similar, better or worst? Thanks in advance, Joan Quintana PD. I checked a lot of things and grasped a lot of information thinking in my new laptop for audio production... but I never would thought in the USB chipset.

13 years, 5 months

building a bash script for jack midi connect-disconnect with toggle keybindings

by alex stone

I'm writing to ask for help on an idea i have for building a bash script to handle jackmidi connect-disconnects for multiple midi ports. The premise is: Start the script, and using keybindings assigned in the script, quickly switch from one jackmidi port to another. (Whatever workspace i'm in at the time) I understand the "captured bindings" won't be able to be used by other apps while the script is running, but i have sufficient obscure combinations of modifier and <something> in mind. Is this possible, and if so, could someone give a basic example of the code required to assign a specific binding as a toggle, for a jack_connect port out port in/jack_disconnect port out port in pair? In this experiment, i'm planning to start with 16 jackmidi ports, with an a2j port for the midi keyboard controller in. This is with the intent of driving LinuxSampler directly to recorded audio out. (No midi sequencer, and non-gui for everything) Regards, Alex. -- www.openoctave.org midi-subscribe(a)openoctave.org development-subscribe(a)openoctave.org

13 years, 5 months

Mumble Jack Support

by Daniel Worth

I would appreciate if people could add positive comments to a bug in Mumbles bug tracker to request Jack support. This would provide a solid free cross platform VOIP solution for podcasters to host shows reliably on while offering a free client on every platform. If you agree with this please goto: http://sourceforge.net/tracker/index.php?func=detail&aid=3008867&group_id=1… and help us in showing the developer that a little bit of work in this area would help a lot of podcaster creating great content. Daniel Worth Host The Open Source Muscian Podcast

13 years, 5 months

jack_load netmanager fails

by Christoph Kuhr

13 years, 5 months

ALSA_OUT hack

by Ken Restivo

Question about the alsa_out tool in the JACK github. How critical is the libresample portion of the code? What would happen if I removed it? i.e. if I were sending, say, one stereo pair to one amp, and another stereo pair to a different amp, and didn't care about the word clocks being in sync, do I really need that libresample stuff sucking up valuable CPU? Or could I whack it? What would be the difficulties created by doing that? Again, this'd be only for output channels and I wouldn't need the word clocks to be in sync. -ken

13 years, 5 months

Music made with linux: Abundance - Ambient-Psy-Trance

by Patrick Shirkey

Hi, I have uploaded a new mix I have done last night and this morning inspired by Halloween weekend 2010 in Sydney, Australia and in particular Stacey Pullen's excellent set. If you listen closely you may hear the influence. It's a long player - 808 MB - 65mins - flac, 48Khz, stereo http://djcj.org/audio/kotau/Abundance-Ambient-Psy-Trance-DJ_Kotau_Session_2… Recorded on a quad core Intel 3Ghz, 8GB RAM, Fedora 12, using ardour3 for multitracking, AMS for the pulsating bassline and Hydrogen for the drum sequencing. Designed to be played loud and immersively, and preferably with a large blast of dopamines to the brain. I think it could be enhanced with a seriously funky bassline. If anyone wants to take a stab at it, that would be cool wid me. It's definitely in there just about bursting to get out. Cheers. -- Patrick Shirkey Boost Hardware Ltd. "ZPE is not about creating something from nothing: It is about using the zero point of a wave as a means to transform other forms of potential energy like magnetic flux, heat, or particle spin into usable energy in such a way that entropy appears to be reversed."

13 years, 5 months

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Linux-audio-user November 2010