Linux-audio-user November 2018

linux-audio-user@lists.linuxaudio.org

28 participants
27 discussions

LAC 2019 : Call for Papers / Posters / Workshops/ Demos / Music / Multimedia Installations

by LAC

Dear all, It is our pleasure to announce the 17th Linux Audio Conference (LAC-19). We look forward to see you at Stanford this Spring (see details below)! Cheers, [Apologies for cross posting, please circulate widely.] *17th Linux Audio Conference - CCRMA, Stanford University (USA), March 23-26, 2019* After seven years outside of the United States, Linux Audio Conference (LAC) <https://lac.linuxaudio.org> is coming back to Stanford University <http://stanford.edu> on March 23-26, 2019 for its 17th edition! LAC is the international conference about Free/Open-Source Software for music, sound, and other media with GNU/Linux as the main platform. More information about this event can be found on the conference website: https://lac.linuxaudio.org/2019/ *Call for Papers / Posters / Workshops* LAC 2019 invites submissions of papers, posters, and workshops addressing all areas of audio processing based on Linux and open source software. All submissions and presentations are in English. Submitted papers are expected to respect academic standards and must be complete (*a simple abstract is not enough*). Submissions can focus on technical, artistic, and/or scientific issues and can target developers and/or users. This includes (but is not limited to) the following categories: - Audio and Music Languages - Audio Hardware Support - Audio Plugins - Drivers, System and Sound Architecture - Education and E-Learning - Games - Interactive Art - Interface Design - Live Coding - Live Performance - Media Art - MIDI, OSC... - Mobile Audio - Music Composition - Music Production - Networked Audio - Physical Computing - Projects Realized using Linux Audio - Realtime Kernel and Linux Distributions - Signal Processing and Sound Synthesis - Sound Spatialization - Standards and Protocols - Video - Etc. *Full Papers* Full papers must be written and presented in English. The length of papers is 4 to 8 pages, with up to 5 keywords, including an abstract of up to 200 words. The abstract will be published on the conference website once the paper has been accepted. The full paper will be available on the website during and after the conference. All papers are peer reviewed by a committee of experts from different disciplines. Reviewers may suggest improvements to the author(s), or require changes in order to accept the submission. The duration of the presentation is 25 minute followed by a 5 minute discussion. *Poster Papers* Poster papers must be written in English, should be 2-4 pages, with up to 5 keywords, including an abstract of up to 150 words. The abstract will be published on the conference website once the poster has been accepted. All posters are peer reviewed by a committee of experts in different disciplines. Reviewers may suggest improvements to the author(s), or require changes in order for the poster to be accepted. *Demos* Demos are informal project (e.g., plug-in, software, interface, idea, etc.) presentations that will be carried out in parallel with poster presentations. Demos can be submitted through this online form <https://lac.linuxaudio.org/2019/submissions.html> to be added to the conference program. *Workshops* Workshop presentations (max duration of 2h) should be 1-4 pages, with up to 5 keywords, including an abstract of up to 150 words to be published on the conference website. Make sure that your proposal indicates if participants are expected to have a specific level, if there are prerequisites, if you'd like to limit the number of participants, etc. Workshops will take place in the CCRMA classroom (which can host approximately 30 people). A projector and a 4 channels sound system will be available in this space. Submit a brief description of the workshop including a URL (if available). *How to Submit Papers / Posters / Workshops?* - Use the online submission tool <http://submissions.html> - Choose the relevant submission type (paper, poster, or workshop) in addition to your 5 categories - The required file format is PDF. Authors must use the provided templates <https://lac.linuxaudio.org/2019/doc/LAC-19-templates.zip> for paper formatting. - Please let us know if you need a special technical setup for your presentation. *Call for Music / Multimedia Installations* LAC 2019 also invites submissions of musical works involving the use of technology/open source software and multimedia installations. A jury will select the compositions and installations to be included in the conference program according to artistic merit and technical feasibility. Please be prepared to perform your work yourself and make sure that you have all resources needed to perform your piece (e.g., instruments, props, other performers, etc.). LAC 2019 cannot pay for any expenses related to a performance (e.g., performers, travel, accommodation, special equipment, etc.). SCLOrk <https://www.scu.edu/cas/music/ensembles/sclork/> will be available to perform new (or old) laptop orchestra compositions, so this type of submission is encouraged this year! SCLOrk <https://www.scu.edu/cas/music/ensembles/sclork/> is the Santa Clara Laptop Orchestra and uses exclusively Linux computers. Musical works and installations can address all areas of digital audio and audiovisual art. This includes (but is not limited to) the following categories: - Electronic Music - Electroacoustic Music - Mixed Music - Acoustic Music - Sound Installation - Interactive Art - Audiovisual Installation - Game in art - Web and Connected Art *Available Setups* For concerts, LAC will provide the following equipment: - CCRMA Stage: 56.8 full 3d sound system (up to 6th order Ambisonics) - CCRMA Listening Room: 22.4 sound system (up to 3d order Ambisonics) - SCLOrk <https://www.scu.edu/cas/music/ensembles/sclork/> (the Santa Clara Laptop Orchestra). Pieces accepted for a performance with SCLOrk will be added to the rehearsal schedule of the corresponding SCU <https://www.scu.edu> class. - Additional requests can be made but are not be guaranteed. *How to Submit Music / Multimedia Installations?* - Use the online submission tool <https://lac.linuxaudio.org/2019/submissions.html> - Select the submission type (performance) - The required file format is PDF, formatted for Letter paper size. Submissions should include: - Description of the project program notes - Link to video or audio demonstration of the project - Technical rider of the work *Important Dates* - *Submission Deadline:* December 7, 2018 (11:59pm PST) - *Notification of Acceptance:* January 18, 2019 - *Camera-ready Version Due:* February 15, 2019 - *Conference Dates:* March 23-26, 2019 *Contact* - lac(a)linuxaudio.org Additional information about LAC-19 can be found on the conference website: https://lac.linuxaudio.org/2019/

5 years, 11 months

[ANN] QjackCtl 0.5.5 - A Black-Friday'18 Release

by Rui Nuno Capela

Wholly greetings! QjackCtl 0.5.5 (black-friday'18) is released! QjackCtl [1] is a(n ageing yet modern, not so 'simple' anymore) Qt [2] application to control the JACK [3] sound server, for the Linux Audio [5] infrastructure. Website: https://qjackctl.sourceforge.io http://qjackctl.sourceforge.net Project page: http://sourceforge.net/projects/qjackctl Downloads: http://sourceforge.net/projects/qjackctl/files - source tarball: http://download.sf.net/qjackctl/qjackctl-0.5.5.tar.gz - source package (openSUSE Tumbleweed): http://download.sf.net/qjackctl/qjackctl-0.5.5-34.rncbc.suse.src.rpm - binary package (openSUSE Tumbleweed): http://download.sf.net/qjackctl/qjackctl-0.5.5-34.rncbc.suse.x86_64.rpm - AppImage [7] package: http://download.sf.net/qjackctl/qjackctl-0.5.5-6.x86_64.AppImage Git repos: https://git.code.sf.net/p/qjackctl/code https://github.com/rncbc/qjackctl.git https://gitlab.com/rncbc/qjackctl.git https://bitbucket.com/rncbc/qjackctl.git Change-log: - Old deprecated Qt4 build support is no more. - Graph port sort options added as View / Sort menu. - System tray options now subject to current desktop environment availability. - Also disable Setup / Misc / Other / Save JACK server configuration to (.jackdrc) when JACK D-Bus interface is enabled. - Whether to use server synchronous mode option added to Setup / Settings / Parameters (only applied when JACK D-BUS interface is enabled). - Disable some Setup / Settings / Advanced parameters when JACK D-Bus interface is enabled and vice-versa. - Attempt to power-cycle JACK D-Bus service on demand; - Marked as probably useless anyway, old "H/W Monitor" option (-H) is now being ditched from Setup / Settings / Advanced tab. - Graph port/connections highlighting. License: QjackCtl [1] is free, open-source Linux Audio [5] software, distributed under the terms of the GNU General Public License (GPL) version 2 or later [6]. See also: http://www.rncbc.org/drupal/node/1953 References: [1] QjackCtl - A JACK Audio Connection Kit Qt GUI Interface https://qjackctl.sourceforge.io http://qjackctl.sourceforge.net [2] Qt framework, C++ class library and tools for cross-platform application and UI development http://qt.io/ [3] JACK Audio Connection Kit http://jackaudio.org [4] ALSA, Advanced Linux Sound Architecture http://www.alsa-project.org/ [5] Linux Audio consortium of libre software for audio-related work http://linuxaudio.org [6] GPL - GNU General Public License http://www.gnu.org/copyleft/gpl.html [7] AppImage, Linux apps that run anywhere http://appimage.org/ Enjoy && keep having fun! -- rncbc aka Rui Nuno Capela

6 years

Creating an impulse response from sine sweep in the terminal

by Jeanette C.

Hey hey, can anyone think of a method to create an impulse response from a sine sweep using the commandline only? I can work with a predefined sine sweep or create a sweep due to a certain formula. I can make sure that it starts as soon as the recording starts. Not sure what else might make the task easier. I know that there is Aliki, but sadly it's graphics only, and IIRC Fons has written has own little widget library, which isn't even accessible with Orca. Any ideas? Best wishes and thanks, Jeanette -- * Website: http://juliencoder.de - for summer is a state of sound * SoundCloud: https://soundcloud.com/jeanette_c * Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g * GitHub: https://github.com/jeanette-c * Twitter: https://twitter.com/jeanette_c_s Make all the clouds disappear Put all your fears to rest <3 (Britney Spears)

6 years

setBfree: not accept ALSA MIDI driver

by Jeanette C.

Hey hey, I've tried to configure setBfree to use the ALSA MIDI sequencer API for MIDI ports, but to no avail. The relevant line in my configuration reads: midi.driver=alsa There is no error message on the console and I specifically included the config file using the -c option. Can anyone help to settle this, please? Best wishes, Jeanette -- * Website: http://juliencoder.de - for summer is a state of sound * SoundCloud: https://soundcloud.com/jeanette_c * Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g * GitHub: https://github.com/jeanette-c * Twitter: https://twitter.com/jeanette_c_s And when you say those words It's the sweetest thing I've ever heard <3 (Britney Spears)

6 years

LAM

by Will Godfrey

Linux Audio Music has been dormant for a very long time, but recently I contacted the the person who hosted and ran it. The reason he closed it was because of a serious vulnerability was discovered in Rails, and he no longer had time to do the necessary upgrades. However, he has told me that he still has the entire database and the code. In his own words: "... would be happy to host and do what I can to facilitate a handoff to someone else who wants to manage it." For anyone who doesn't know, this was a relatively simple and clean site aimed specifically at providing a home for tracks composed with Linux - something rather rare! -- Will J Godfrey http://www.musically.me.uk Say you have a poem and I have a tune. Exchange them and we can both have a poem, a tune, and a song.

6 years

jack-dssi-host: chooose plugin UI

by Jeanette C.

Hey hey, is there a way to choose a plugin's UI using jack-dssi-host from the terminal? I'm thinking of hexter, which has a gtk and a text UI, but I haven't been able to choose the text UI, since it's listed as the second one. Best wishes and thanks, Jeanette -- * Website: http://juliencoder.de - for summer is a state of sound * SoundCloud: https://soundcloud.com/jeanette_c * Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g * GitHub: https://github.com/jeanette-c * Twitter: https://twitter.com/jeanette_c_s She's so lucky, she's a star But she cry, cry, cries in her lonely heart... <3 (Britney Spears)

6 years

OT: SSD disk prices have dropped?

by Ivan K

I need to replace a hard drive that recently went bad, and the new drive needs to be at least 1TB. I was looking on Amazon and debating whether to buy a 5400rpm versus 7200rpm disk, when, just for fun, I thought I would price 1TB SSD disks. I started finding things such as this: https://www.amazon.com/Inland-Professional-Internal-Solid-State/dp/B07FM9SS… Inland Professional 1TB SSD 3D NAND SATA III 6Gb/s 2.5" 7mm Internal Solid State Drive (1T) $140 (USD) https://www.amazon.com/Samsung-Inch-Internal-MZ-76E1T0B-AM/dp/B078DPCY3T/re… Samsung 860 EVO 1TB 2.5 Inch SATA III Internal SSD (MZ-76E1T0B/AM) $148 (USD) Can I just plug one of these drivex into a SATA plug on my motherboard and it will function just like a regular spinning hard disk drive? If 1TB SSD drives have become so cheap, I don't understand why anyone would buy a hard drive that spins anymore, but maybe I am missing something. Am I missing anything?

6 years

samplerate conversion targetting number of samples

by Brent Busby

Anyone know some Linux CLI tools that would be good to batch convert a folder of 24/96 samples, mostly small waveform clips about two to four wavecycles long each, down to 8-bit...<drumroll>...and the nearest number of samples that's a multiple of 256 by stretching/squeezing, not by truncation (so as not to ruin looping)? You can see why I don't want to do this to a large number of files with a mouse in Audacity... :) Though if you did do it in Audicity, you can achieve what I'm trying to do by selecting the whole clip, selecting Effect -> Change Speed from pulldowns, plugging in a new length that's a multiple of 256 under New Length (with unit set to samples), and exporting the new file. Except, I really don't want to do that hundreds of times myself, so a scriptable CLI method would be better. Basically, I have some Multimoog waveforms that I've sampled with a good interface, but I'd like to bring them into an Ensoniq Mirage (8-bit), which likes everything to be on 256-sample page boundaries. I'm hoping to do some interesting hybrid/wavetable synthesis if I can get the waves into the machine. The target samplerate is unimportant, because the Mirage is going to adjust it up and down itself anyway because of the way its playback works. Only the length of the clips is important, which should be a multiple of 256 samples, and it can be downconverted by any amount that will achieve the length. Most samplerate conversion seems to target a desired frequency, but I'm targetting the number of samples, and I'm flexible on whatever frequency/resolution conversion is needed. -- - Brent Busby + =============================================== + "The introduction of a new kind of music must -- Studio -- + be shunned as imperiling the whole state, for -- Amadeus/ -- + styles of music are never disturbed without -- Keycorner -- + without affecting the most important political -- Recording -- + institutions." --Plato, "Republic" ----------------+ ===============================================

6 years

Berlin Linux Audio meeting @ c-base 2018-11-06

by Daniel Swärd

Hi all. Next meeting at c-base is on Tuesday 2018-11-06. I'll be in the mainhall from 20:00. I have reserved the soundlab again so we can go there if we want. Cheers /Daniel

6 years

MOTU Ultralite AVB - possible to configure two connected devices without 430 EUR switch?

by Hanns Holger Rutz

hi there, i found a number of related threads, seems mainly @Anders Hellquist who is using connected Ultralite AVB, but with the additional switch. i'm trying to determine whether this interface or the slightly cheaper mk4 (which has 2 more analog outs as far as i can see) makes sense for my setup. i have a performance project where connecting with another AVB device makes sense, so i'm tempted into the ultralite AVB. only... - manual seems to indicate that you can maximally route 8 channels either way, which is a bit silly given that I can already do that directly with the two laptops connected and Zita running... - also manual suggests that probably i won't be getting the web interface served just with USB connection, but only ethernet, so catch-22 if i want the two interfaces connected and not spend 430 EUR on a bloody specialised switch. isn't it possible to set up the interface when it's not connected to the second interface and then simply replug the ethernet cable? i guess the problem will be that i can tell it to send output channels to the other interface which is not yet visible? or other idea - simply use an off-the-shelf ethernet plug, then disconnect the laptop once the web interface is configured? ideas? better options for a 9.5" usb CC interface with at least 8i8o analog? i'm a happy user of scarlett 18i20, but it's often too big and heavy for travel. best, ..h.h..

6 years

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Linux-audio-user November 2018