Linux-audio-user November 2014

linux-audio-user@lists.linuxaudio.org

75 participants
59 discussions

[LAU] Carla Plugin Host 2.0-beta3 released!

by Filipe Coelho

Just bringing the news... http://kxstudio.sourceforge.net/News/?action=view&url=carla-20-beta3-is-here This is the 3rd beta of the upcoming Carla 2.0 release. There have been quite a few nice features implemented since beta2. - Internal patchbay mode - Carla as VST plugin (Linux only) - Carla LMMS plugin - New and updated skins - Old non-skin mode To download binaries or source code, jump into the KXStudio downloads section. [1] If you're using the KXStudio repositories, you can simply install "carla-git" instead (plus "carla-lv2" and "carla-vst" if you're so inclined). Bug reports and feature requests are welcome! Jump into the Carla's Github project page for those. [2] See the top link for more details and screenshots. ----------------------------------------------------------- [1] http://kxstudio.sourceforge.net/Downloads [2] https://github.com/falkTX/Carla

11 years

[LAU] Sound Devices USBPre2, UAC2 status

by shal＠free.fr

Hi, Some old posts exist about the UAC2 support for the Sound Devices USBPre2 but some problem remains. The current status is that this sound card is supported as a USB 1.1 card in high-speed mode. But this card is not seen as a Usb Audio Class 2 on Linux. On Mac OS X this card is recognized as UAC2. My principal problem is that the "device descriptor" provided by the card is always a USB1.1 class There is two modes of boot for the card (pressing the "1" button, the card is in full speed mode, without pressing in UAC2 mode) There is only one difference between these two modes in the lsusb -v : the "bInterval" go to 4 from 1. This is already view by Clemens on: http://lists.linuxaudio.org/pipermail/linux-audio-user/2011-October/081275.… In this another post, we can seen: Bernardo Barros wrote: > Ok, I reconnected without pressing "1". > > Bus 002 Device 002: ID 0926:0202 > Device Descriptor: > bNumConfigurations 2 Strange, I have never 2 on bNumConfigurations ! Somebody can test it on its card ? This is perhaps my problem, my card only provides one "Configuration Descriptor". The second one is certainly the UAC2 "Configuration Descriptor". The lsusb without 1 pressed : http://pastebin.com/8yjjASv7 The lsusb with 1 pressed : http://pastebin.com/pGFdjR4K The usbmon trace of the insertion of the usbpre2 (without "1") : http://pastebin.com/pySC4Age This sound card is great, it is very disappointing to not be able to used it with all functionnalities. I search help in order to debug this problem. I am devlopper, I can test kernel patches without problem. Thank for any idea (or patch). Olivier

11 years

[LAU] Linux Sampler/Mint 17 connection refused

by jonetsu＠teksavvy.com

Hello, I's like to try Linux Sampler although right at the start there's a lscp_client_create with connection refused. System is Linux Mint 17 KDE, latest. Qsampler is: 0.2.2-5 installed from package. Thanks.

11 years, 1 month

[LAU] - an on the fly midi re-mapper?

by Athanasios Silis

Hi all, I may not be naming what I want to do correctly so here is the long version. I have a Behringer BRC2000 midi controller, connected to pc through usb. It has 108 rotary knobs and buttons that, by default, send midi signals in midi channel #0. One can alter the channel of each controller by entering EDIT mode and selecting the new midi channel. This is not fast for real time operation though. What I would like to do is read the value of one of the buttons that the surface offers and depending on the value of that button, (on or off) I would like to modify the midi channel of all the controllers of the surface. To give an example, say the button is OFF , then all the controllers send midi data on channel #0 . Then I press the button and then all the controllers send midi data in channel #1. If I use the 4 buttons at the bottom right corner of the BRC2000, I can effectively access all 16 midi channels and thus have a whooping ( 108 cc - 4 addressing buttons ) * 16 midi channels = 1664 different controllers at my disposal. Is there an application out there which I can program to do that? Surely I can develop a C++ application based on jakc API to do that, but I wonder if there is something ready out there. If something like that does not exist, would anyone be interesteed in developing it? Thank you for your help.

11 years, 1 month

[LAU] encryption and performance penalty

by Atte

Hi I'm thinking about protecting my data with encryption. I know it's a complex matter, and very hard (impossible?) to make a system 100% protected. And I must admit I don't fully understand the technical workings of the various available tools, but I found https://wiki.archlinux.org/index.php/disk_encryption. Now I'm wondering: 1) Can anyone share hands-on experience with a particular strategy, why did you choose that particular tool, is it easy to setup and work with in every-day use? 2) Most importantly: How will the various methods affect my systems ability to perform under realtime conditions (jack) including reading/writing files from a DAW? NB: I'm running debian stable, if it matters... Cheers -- Atte http://atte.dk http://a773.dk

11 years, 1 month

[LAU] Amazing improvement recompiling a kernel

by Jonathan E. Brickman

I just saw some amazing improvement on this laptop (2GHz, 2G RAM, dual-core, >5 years old) by recompiling kernel and glibc in Debian Testing (Jessie) with optimizations for this CPU. Overall responsiveness is wonderfully better, 48 KHz began working well, and stability arrived at 5.33 ms latency in Jack (previously 15-20ms...). The current Debian Testing made the glibc recompile much more straightforward than I've ever seen it, and I have written it up here: http://notes.ponderworthy.com/rebuild-glibc-optimized-for-your-cpu-in-debia… I don't usually go quite that deep into sysarcana, if any of you out there have improvements I'll love to have them and will make sure readers know where they came from if desired :-) Cheers to all!!!!! -- Jonathan E. Brickman Ponderworthy Music | jeb(a)ponderworthy.com | (785)233-9977 | http://ponderworthy.com

11 years, 1 month

[LAU] ANN: Upcoming Fall DISIS Event

by Ivica Ico Bukvic

Apologies for x-posting... The School of Performing Arts and the Institute for Creativity, Arts, and Technology at Virginia Tech are pleased to announce DISIS^3 (Digital Interactive Sound & Intermedia Studio) Event Monday, December 1, 2014 7:30 pm Cube, Moss Arts Center free and open to the public Featuring computer music by Virginia Tech faculty and students, guest violinist Sarah Plum, guest composer Elizabeth Hoffman, soprano Lee Heuermann and trombonist Jay Crone, the Linux Laptop Orchestra (L2Ork), animator Tamar Petersen, and a telematic performance with faculty and students at the University of Virginia, presented with the 128 speaker 3D surround sound system in the Cube of the Moss Arts Center. Event poster: http://disis.icat.vt.edu/images/main/events/141201_poster.jpg ----- The Cascades (2014), for multichannel computer music Eric Lyon Between (2013, revised 2014), for laptop orchestra and saxophone Ivica Ico Bukvic Brock Allen, saxophone Linux Laptop Orchestra (L2Ork): Brock Allen Frehiwot Almente Cody Cahoon Rachel Gertler Deborah Goldeen Brandon Hale Christian Kurmel Paige Lopynski Peter Nelson Jocelyn Roman Jacob Stenzel Omavi Walker Ivica Ico Bukvic, director Half-Life (2009), for laptop orchestra and narrator Ivica Ico Bukvic Colleen Beard, narrator L2Ork Song Without Words #1 (2014), for improvising singer, computer processing, and laptop orchestra Eric Lyon Lee Heuermann, soprano Eric Lyon, computer processing L2Ork Intermission Il Prete Rosso, for amplified violin, motion sensor, interactive computer effects, and multichannel audio Charles Nichols Sarah Plum, violin Charles Nichols, computer Handshake Improvisation, for telematic improvisation University of Virginia: Lisa Cella, flute Matthew Burtner, sax Rachel Trapp, horn Jeremy Muller, percussion Virginia Tech: Sarah Plum, violin Charles Nichols, electric violin Brock Allen, Ivica Ico Bukvic, and Christian Kurmel, L2Ork Tamar Petersen, video Troglodyte (2014) for computer, Leap Motion, and processed voice Tanner Upthegrove Tanner Upthegrove, Leap Motion and computer Thirteen Ways to Leave Your Hexachord, for trombone and multi-channel electroacoustic sound, and accompanying video Elizabeth Hoffman Jay Crone, trombone Best, -- Ivica Ico Bukvic, D.M.A. Associate Professor Computer Music ICAT Senior Fellow DISIS, L2Ork Virginia Tech School of Performing Arts – 0141 Blacksburg, VA 24061 (540) 231-6139 ico(a)vt.edu www.performingarts.vt.edu disis.music.vt.edu l2ork.music.vt.edu

11 years, 1 month

[LAU] Ideas - live gig streaming

by Russell Hanaghan

Hey list! So a local haunt I work at frequently doing any number of things, including sound, playing or sitting in for someone, maintenance, repairs, installs, etc. great little place in Placerville, CA. I'm looking for input for these items directly (please go offline or start another thread if you want to talk about unrelated stuff); Audio / video live streaming - post mix audio to web interface with synced video. -coverage of all in minimum of apps but some control over general mix (pgm) (master comp/EQ only if needed) and video basic adjust (contrast, luminance, phase, etc. - network side bandwidth / bs quality ...min bandwidth / network management issues - MTU, adjust for max glitch less thruput. Hoping to reach maybe 200 ppl via interwebs... Interactive chat - video return with possible audio availability. As an aside, I'm starting a sound school at the premises in the new year. Guess what I'm gonna promote in the recording / PC sound management segment?! The ears prick up immediately in the circles I run in when I speak of totally NON reliance on proprietary ( spell - expensive ) OS and awesome audio apps!! All ideas toward Active examples would be awesome. Pls peeple... I don't want to be a jerk about (on topic stuff - I'm prolly the last one who should speak ... Some of the stuff that comes up is just distracting for me personally. I come here for audio upon Linux info. Not lectures on how to behave or what my opinion should be! Hopefully, with as much tact intended as possible here, I speak not just for myself?) I eagerly await technical Ideas on this. Ty in advance. I'm really excited about this project and it's potential. Cheers! ~ Russell

11 years, 1 month

[LAU] soundfont question

by Michael Reid

This is the first time posting to the mailing list, I appreciate any help that is given. I have a 2 soundcard configuration: An SB live and Gina from Echo audio. The Gina only provides audio, which is the main card I wish to use for routing my audio signals. The other card is an SB live intended for using the midi interface (MPU 401 or something to that effect), and to load a soundfont into the cards internal synthesizer. My question is, how do I use the SB live's soundfont synthesizer capabilities and route it to the Gina for audio playback. I'm using Jack and do not know how to do this. I'm wondering if it is even possible. I do not want to use the SB live's audio output jack just to hear the soundfont I loaded. I would like the Gina to handle all audio connections. Thank you again and I appreciate any help with this issue. Let me know if more information is needed.

11 years, 1 month

[LAU] [ANN] Qtractor 0.6.4 - The Baryon Throne beta release!

by Rui Nuno Capela

Aw, snap! Wait, there's no big deal (nor chromium's) cosmic (mis)alignment being announced here now. Rest calm. Sorry to delude some of you :) But, there's one (notable) leap on this tiny side and part of the universe... (or is it a multiverse? move along...) What I really want to tell is all about this happening and none else's freaking business: Qtractor 0.6.4 (baryon throne beta) is released! Release highlights: * Punch-in/out over loop-recording/take modes (NEW) * Latch/momentary MIDI Controllers toggle mode (NEW) * JACK client/port pretty-name (metadata) support (NEW) * Custom style and color themes (NEW) * Mixer strip multi-row layout (NEW) * Muted audio tracks monitoring on playback (FIX) * Clip fade-in/out resize on time-stretch (FIX) As for the clueless (as if there's any): Qtractor is an audio/MIDI multi-track sequencer application written in C++ with the Qt4 framework. 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. Well, although this being yet another milestone--if one may call it that way--it also makes it official (yes, deeply engraved in stone) and definitive as a migration to Git can be, as for source-code control and management (it's a dirty job I know, but someone has to do it, right?). Nevermind. It's done. Meanwhile, please, don't ever hesitate to ask whether any of the above does affect you some way or another. Or maybe anything else, yay? Indeed, the puzzled you feel, the better :) Website: http://qtractor.sourceforge.net Project page: http://sourceforge.net/projects/qtractor Downloads: http://sourceforge.net/projects/qtractor/files - source tarball: http://download.sourceforge.net/qtractor/qtractor-0.6.4.tar.gz - source package (openSUSE 13.2): http://download.sourceforge.net/qtractor/qtractor-0.6.4-14.rncbc.suse132.sr… - binary packages (openSUSE 13.2): http://download.sourceforge.net/qtractor/qtractor-0.6.4-14.rncbc.suse132.i5… http://download.sourceforge.net/qtractor/qtractor-0.6.4-14.rncbc.suse132.x8… - quick start guide & user manual (see also: the wiki): http://download.sourceforge.net/qtractor/qtractor-0.5.x-user-manual.pdf - wiki (help wanted!): http://sourceforge.net/p/qtractor/wiki/ Weblog (upstream support): http://www.rncbc.org License: Qtractor is free, open-source software, distributed under the terms of the GNU General Public License (GPL) version 2 or later. Change-log: - Fixed some old loop-recording clip drawing glitches. - Current assigned track/channel instrument definition names for MIDI controllers, note keys, RPN and NRPN, are now in effect on the MIDI clip editor drop-down lists, whether available. - Clip/Take/Range... input dialog values are now properly sanitized as long to prevent invalid take/folding ranges. - Audio capture/export file type default now set to "wav". - Extending punch-in/out over loop-recording/takes modes. - Make audio tracks monitoring always flow while playback is rolling, independently of their mute/solo state. - Fixed undo/redo conversion of audio clip offsets under (automatic) time-stretching eg. due on tempo changes. (ticket by Holger Marzen, thanks). - Latch/momentary MIDI Controllers toggle mode introduced (a request by AutoStatic aka. Jeremy Jongepier, thanks). - JACK client/port pretty-name (metadata) support is being seamlessly introduced. (EXPERIMENTAL) - Audio frame/MIDI time drift correction is now an option on View/Options.../MIDI/Playback/Enable MIDI queue time drift correction. - Transport auto-backward feature now honoring last position playback was started. - Introducing brand new application user preferences on View/Options.../Display/Options/Custom style and color themes (eg. "KXStudio", by Filipe Coelho aka. falkTX). - Mixer widget gets automatic multi-row strip layout. - Clip fade-in/out now follows time-stretch resizing, via shift/ctrl+click and drag one of its edges. - Fixed a typo causing FTBFS when VST plug-in support is explicitly disabled (./configure --disable-vst). See also: http://www.rncbc.org/drupal/node/834 Enjoy && have plenty of fun. -- rncbc aka. Rui Nuno Capela

11 years, 1 month

2026

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

2003

2002

Linux-audio-user November 2014