Linux-audio-dev

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7502 discussions

lac2014 video gallery

by Rui Nuno Capela

howdy again, inthe same vein as my previous post re. lac2014 photo gallery, here goes all the unedited videos as taken by me during the lac2014@zkm-karlsruhe: - LAC2014@ZKM-Karlsruhe - Linux Sound Night (1) http://www.youtube.com/watch?v=-qJETwQi2XQ - LAC2014@ZKM-Karlsruhe - Linux Sound Night (2) http://www.youtube.com/watch?v=eHPIZhDLQ_s - LAC2014@ZKM-Karlsruhe - Linux Sound Night (3) http://www.youtube.com/watch?v=NU0giL8KRhE - LAC2014@ZKM-Karlsruhe - Linux Sound Night (4) http://www.youtube.com/watch?v=8m5pNyq5O-k - LAC2014@ZKM-Karlsruhe - Linux Sound Night (5) http://www.youtube.com/watch?v=6f4gOqYj3Zk - LAC2014@ZKM-Karlsruhe - Linux Sound Night (6) http://www.youtube.com/watch?v=sWqFmmbrXz4 - LAC2014@ZKM-Karlsruhe - Linux Sound Night (7) http://www.youtube.com/watch?v=LBp_wJNGCVo - LAC2014@ZKM-Karlsruhe - Linux Sound Night (8) http://www.youtube.com/watch?v=qxsLO1FIjE4 i suck at cinematography and it shows :) im specially begging for all the depicted performing artists (mainly Jeremy and superdirt²) to help me on their own proper tag lines and descriptions, please. nb. the videos are currently unlisted. you need the direct explicit urls to watch them. cheers -- rncbc aka. Rui Nuno Capela

11 years, 2 months

SWH shaper

by Lucas Takejame

Hi guys, I was trying to use Swh lv2 plugin shaper and found something strange, was it suppose to explode the sound when the waveshape parameter hits -1 or below? Also when I looked into the code I found this piece: float shape = 0.0f; if (shapep < 1.0f && shapep > -1.0f) { shape = 1.0f; } else if (shape < 0) { shape = -1.0f / shape; } else { shape = shapep; } I think the first *else if* should be about shapep, but I don't know exactly how this plugin should work, I changed that part to else if (shapep < 0) but the explosion in sound remains... Do you guys have any Idea?

11 years, 2 months

OpenAV Productions : Sorcer

by Harry van Haaren

Hey Everybody, I'm happy to announce OpenAV productions: http://openavproductions.com OpenAV productions is a label under which I intend to release my linux-audio software projects. The focus of the software is on the workflow of creating live-electronic music and video. The release system for OpenAV productions is one based on donations and time, details are available on http://openavproductions.com/support Sorcer is a wavetable synth, and is ready for release. Check out the interface and demo reel on http://openavproductions.com/sorcer Greetings from the LAC, -Harry

11 years, 2 months

Parallella @ LAC

by Jacob

Hi, I do have a Parallella (www.parallella.org) board with me and can show it and tell about my experiences with it. So if anybody is interested please respond or tell me. Cheers Jacob

11 years, 2 months

Linux Audio Conference on Twitter

by Nils

I try to make some photos and twitter here and there about the linux audio conference 2014. Hashtag is #lac2014 Follow me or write your own! https://twitter.com/NilsGey Have Fun live or with the stream! Nils

11 years, 2 months

[ANN] Qtractor 0.6.1 & Vee One Suite 0.4.2 - A pre-LAC beta release frenzy!

by Rui Nuno Capela

Howdy! As a pre-LAC release frenzy, Qtractor 0.6.1 (bitsy sweet beta) is out! the change-log for this release are mainly fixes: - New user preference option added as View/Options.../Display/Transport/Hold auto-scrolling (follow play-head) on edits (after requests by Holger Marzen and Louigi Verona, thanks). - All color chooser dialogs were missing proper titles. - Audio peak file re-generation and clean-up has been hopefully fixed and cache optimized (re. drawing audio clip waveforms). - Fixed initial session snap-per-beat setting on main toolbar. - Clip/Export...'ed files are now made persistent, no questions asked (after a ticket by Oliver Kester, thanks). - Portuguese (pt) translation added (by Esteban Viveros, thanks). The Vee One Suite of old-school also gets an interesting update. changes for the third proto-beta release are: - Badly named 'Noise' wave-shape oscillators get their band-limited treat option and re-labeled as 'Rand' (synthv1 only); also a brand new wave-shape 'Noise' is then introduced (now for real :)). - New user preference option, cf. Help/Use native dialogs. - An anti-denormal regression applied to the Phaser fx stage (affecting early proto-beta >= 0.4.0). all still available in dual form, as usual: - a pure stand-alone JACK client with JACK-session, NSM (Non Session management) and both JACK MIDI and ALSA MIDI input support; - a LV2 instrument plugin. Remember that both Qtractor and the Vee One Suite are free and open-source Linux Audio software, distributed under the terms of the GNU General Public License (GPL) version 2 or later. See you all on LAC2014@ZKM-Karlsruhe! http://lac.linuxaudio.org/2014/ See also: http://www.rncbc.org/drupal/node/778 And here goes the dirty details: * Qtractor - an audio/MIDI multi-track sequencer * Qtractor 0.6.1 (bitsy sweet beta) is out! Qtractor is an audio/MIDI multi-track sequencer application written in C++ with the Qt4 framework [1]. Target platform is Linux, where the Jack Audio Connection Kit (JACK) for audio and the Advanced Linux Sound Architecture (ALSA) for MIDI are the main infrastructures to evolve as a fairly-featured Linux desktop audio workstation GUI, specially dedicated to the personal home-studio. website: http://qtractor.sourceforge.net downloads: http://sourceforge.net/projects/qtractor/files - source tarball: http://download.sourceforge.net/qtractor/qtractor-0.6.1.tar.gz - source package: http://download.sourceforge.net/qtractor/qtractor-0.6.1-11.rncbc.suse131.sr… - binary packages: http://download.sourceforge.net/qtractor/qtractor-0.6.1-11.rncbc.suse131.i5… http://download.sourceforge.net/qtractor/qtractor-0.6.1-11.rncbc.suse131.x8… - quick start guide & user manual (outdated): http://download.sourceforge.net/qtractor/qtractor-0.5.x-user-manual.pdf help wanted! Qtractor Wiki ;) http://sourceforge.net/p/qtractor/wiki/ * synthv1 - an old-school polyphonic synthesizer * synthv1 0.4.2 is out! synthv1 is an old-school all-digital 4-oscillator subtractive polyphonic synthesizer with stereo fx. LV2 URI: http://synthv1.sourceforge.net/lv2 website: http://synthv1.sourceforge.net downloads: http://sourceforge.net/projects/synthv1/files - source tarball: http://download.sourceforge.net/synthv1/synthv1-0.4.2.tar.gz - source package: http://download.sourceforge.net/synthv1synthv1-0.4.2-16.rncbc.suse131.src.r… - binary packages: http://download.sourceforge.net/synthv1synthv1-0.4.2-16.rncbc.suse131.i586.… http://download.sourceforge.net/synthv1synthv1-0.4.2-16.rncbc.suse131.x86_8… * samplv1 - an old-school polyphonic sampler * samplv1 0.4.2 is out! samplv1 is an old-school polyphonic sampler synthesizer with stereo fx. LV2 URI: http://samplv1.sourceforge.net/lv2 website: http://samplv1.sourceforge.net downloads: http://sourceforge.net/projects/samplv1/files - source tarball: http://download.sourceforge.net/samplv1/samplv1-0.4.2.tar.gz - source package: http://download.sourceforge.net/samplv1/samplv1-0.4.2-16.rncbc.suse131.src.… - binary packages: http://download.sourceforge.net/samplv1/samplv1-0.4.2-16.rncbc.suse131.i586… http://download.sourceforge.net/samplv1/samplv1-0.4.2-16.rncbc.suse131.x86_… * drumkv1 - an old-school drum-kit sampler * drumkv1 0.4.2 is out! drumkv1 an old-school drum-kit sampler synthesizer with stereo fx. LV2 URI: http://drumkv1.sourceforge.net/lv2 website: http://drumkv1.sourceforge.net downloads: http://sourceforge.net/projects/drumkv1/files - source tarball: http://download.sourceforge.net/drumkv1/drumkv1-0.4.2.tar.gz - source package: http://download.sourceforge.net/drumkv1/drumkv1-0.4.2-12.rncbc.suse131.src.… - binary packages: http://download.sourceforge.net/drumkv1/drumkv1-0.4.2-12.rncbc.suse131.i586… http://download.sourceforge.net/drumkv1/drumkv1-0.4.1-12.rncbc.suse131.x86_… Enjoy && yet again, have fun. -- rncbc aka Rui Nuno Capela rncbc(a)rncbc.org

11 years, 2 months

Hydrogen - hihat foot pedal control

by Aurélien Leblond

Hello Sebastian, A few weeks ago when discussed on the LAD a few enhancements for Hydrogen, one of them was to be able to switch between open, half-open and closed hihat samples when playing with the hihat foot control on an E-Drum. In this fork https://github.com/blablack/hydrogen I worked out the basic backend solution: - instruments can be set to be part of a hihat - if they are, they have a range associated that say to what level of foot control pressure they react - in the midi_input class, when a 'note on' is received, the method will check if the instrument is a hihat, check the foot pressure and change the note played to the one of the right hihat instrument if needed I still need to modify the GUI (at the moment I need to change the xml of the drumkit to be able to set that up), but if you could have a look at this to give me some feedback that would be great. Thanks in advance, Aurélien

11 years, 2 months

DAW extra feature proposal: reversed clips, clip status info display

by Zlobin Nikita

There is one usage case, i can call - reversing recorded piano and some other instruments. One case, when sequencer and even instrument settings are not last step before mastering. I'm not expert and at all badly aware of existing music to mention examples, but i know at least one - in Black Mesa game - some soundtracks, marked as "mesa remix". I don't see it bad to mention such stuff there, since it is done completely by fans, no matter with what resources and software. Additionally, in gui clips may display inline status, with indicators for direction and all other clip-individual info, such as speed (probably, that's all - don't know, what other indicators are good to have there).

11 years, 2 months

ALSA frustration

by Fons Adriaensen

For the N-th time I've set aside a day to try and read some of the ALSA documentation. For the N-th time I've completely lost my way in a web consisting of * The complete lack of any documentation that explains the concepts, the big picture, and the terminology. * Completely useless docs, of the form: function xxx_set_yyy (parm_zzz) sets the yyy of xxx to zzz. or similar, in other words something generated automagically and completely uninformative and redundant. In particalur if it's impossible to find out what yyy is supposed to be or do in the first place. * Uncomprehensible English. * When trying to learn something from actual source code or examples, layer upon layer of syntactic sugar making it virtually impossible to understand what's going on. All this more than ten years after ALSA was announced. I *do* understand those hardware manufactureres who just refuse to try and write an ALSA driver. In this case my very humble endeavour was just to find out if or not it would be possible to create something similar to the alsa_jack plugin that would actually present itself as a sound card, so that (badly written) apps would be prepared to use it. If someone knows the answer to that question and can also explain it I'll commend him/her in my prayers. -- FA A world of exhaustive, reliable metadata would be an utopia. It's also a pipe-dream, founded on self-delusion, nerd hubris and hysterically inflated market opportunities. (Cory Doctorow)

11 years, 2 months

itop

by elboulangero

Hello everyone, lately I had to fight big XRUN troubles, and thanks to this forum I finally solved that. This excellent thread saved me: http://linuxaudio.org/mailarchive/lau/2012/9/5/192706 On my long quest, I tried to see a little bit more what happened with the IRQs on my system. I searched for a kind of 'top' utility to monitor the interrupts, but the only apps I found were either deprecated, or missed some cool features. So, I ended up writing my own tool to monitor the file /proc/interrupts. It's available a this address: https://gitorious.org/elboulangero/itop As its name indicates, it behaves pretty much like top, but for interrupts. It's quite a simple thing, that I tried to enhance a bit with some cool features: + refresh period can be specified. + two display modes: display interrupts for every CPU, or only a sum of all CPU. + display every interrupt (sorted like /proc/interrupts), or only active interrupts (sorted by activity). + in case the number of interrupts changes during the execution of itop (due to a rmmod/modprobe), it's handled without any fuss. + command-line options are also available as hotkeys for convenience. + at last, the program display a summary on exit. The idea is that this summary could be copied/pasted in emails to help debugging. If anyone is interested, feel free to try and comment ! Cheers

11 years, 2 months

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Linux-audio-dev