Linux-audio-user November 2015

linux-audio-user@lists.linuxaudio.org

62 participants
68 discussions

by Ede Wolf

Hello. After a fresh install I just thought I'd give the new ardour a try and after some problems starting up I figured, that ardour cannot detect a running jack if that has been started with the "--name SOMENAME" option and is not running as default. Not a big deal at all having an unnamed jack, but I am wondering if there is an option to pass to ardour to inform it about jack running not as "default"? Thanks Ede

10 years

ladspa.org

by Hermann Meyer

Hi LV2 is the successor for LADSPA, that's clear so far. but it make me wonder that www.ladspa.org disappears, as LADSPA is still widely used. Is there somewhere a new home or have we to go to the archive.org

10 years

Linux softsynths

by James Harkins

The reason why I was looking for DST capability: I have to give a lecture at my school next week about synthesis techniques, and I wanted to show some tricks that are not exactly standard (even though they've been around since Stockhausen was cutting up little bits of tape, but never mind that). Such as: run a fixed-frequency band-limited impulse through a high-Q bandpass filter to play melodies on the impulse's harmonic series.[1] I can do this easily in SuperCollider, but I don't want the students to come away with the impression that you have to learn programming to do synthesis. So that's out. I can do this easily in Abysnth under Windows, but could not get it to work well in Linux. I looked at a couple of native Linux softsynths and... I have to say... I was sorely disappointed. It wasn't evident to me how to generate a bandlimited impulse in ZynAddSubFx; the documentation seems to indicate that this synth is built on totally different principles. Wavetable synths like WhySynth are hampered by the inability to import custom wavetables and by impossible-to-control mapping of MIDI note numbers onto filter frequency. I had a quick look at the webpages for Ingen, but there are no packages and I was burned out on build failures at that point, so I didn't go further. For the moment, I need to plug ahead with Windows so it's a question mainly for my own curiosity, but... did I overlook a really good softsynth package, or have I stumbled onto a gaping hole in the Linux audio ecosystem? hjh [1] Underworld, "Rez."

10 years

"Cannot open lsp client" ??

by James Harkins

Can anyone provide some insight into the following JACK error? Cannot open lsp client jack_client_open() failed, status = 0x21 Background: SuperCollider has an extension class, SCJConnection[1], that uses jack_lsp to query a running jack server for ports, properties and connections. This has never failed for me. In fact, at 8 AM today, it was fine. Then I needed to step away, so I closed audio apps, stopped the Jack server (using qjackctl) and suspended my Ubuntu session. A bit later, I resumed the session, restarted the Jack server, launched SC, and it spit out "Cannot open lsp client" for the same action that had worked perfectly two hours before. Quitting and restarting the Jack server did not resolve the problem. Rebooting the computer resolved the problem. If it's impossible to determine the cause at this point, that's fine -- I've seen stranger things from computers. But it's troubling that something that has worked literally thousands of times would suddenly, today, fail for no apparent reason. So I'm hoping maybe somebody might have a guess what would cause lsp to break (and I can keep that in mind if it happens again). hjh [1] https://github.com/supercollider-quarks/LinuxExternal/blob/master/JACK/SCJC…

10 years

KXstudio Repo Packages

by David Baron

For example, flac and jackd2 from kxstudio "trusty" are ostensibly much newer than on Debian Sid (unstable). Are these experimental? Safe to upgrade?

10 years

Extensive Music Production Tutorials

by jonetsu＠teksavvy.com

Hello, Just came across a series of music production videos on youtube that seems to be quite solid. Audio theory is covered at length. There are 7 parts divided in sections. The first part about theory is about 7 hours. The author is Brian Bollman. He uses Bitwig although as he says, much of the foundation can be done on any DAW. The first part, 7 hours, covers: Free Education Resources Audio Fatigue and Relative Loudness Digital Audio, Metering and Distortion Analog Audio, Metering and Distortion Sampling Rates, Bit Depth Sonic Visualizer (http://www.sonicvisualiser.org) Audio Plugins Fundamentals of Sounds - Amplitude, Frequency, Pitch, Nyquist Phase Beating, Haas Effect Timbre, Harmonics Music Production on a Budget Comparing DAWs I will try to follow most of the course. Scroll down a certain number of times to see the first lessons: https://www.youtube.com/channel/UCRBkLO9F7mbtoLT583xLJ0w Cheers.

10 years

ANN: Contemplative Practices for the 21st Century University -- call for submissions

by Ivica Ico Bukvic

Apologies for x-posting--please consider sharing this announcement with your colleagues/constituents. I am pleased to announce the call for works (papers, posters, installations, and performance works) for the upcoming Contemplative Practices for the 21st Century University conference that will take place at Virginia Tech, March 10-12, 2016. As part of the conference, Virginia Tech Institute for Creativity, Arts, and Technology (ICAT) invites proposals for art, installations, and technology demonstrations with focus on contemplative practice. While proposed art and installations should also leverage technology, within the context of this submission we define technology in the broadest terms possible. All submissions will be reviewed by an interdisciplinary panel consisting of ICAT faculty and will be assessed on their feasibility within the context of available conference infrastructure and resources. Selected projects will be showcased as part of the reception and a concert at the Moss Arts Center. Where appropriate, some submissions may be also presented in a paper and/or poster format as part of the "Technology" track. Authors of selected submissions will be expected to attend the conference. We are particularly interested in performance works that leverage ICAT's unique infrastructure, including Cube and Perform Studio. To apply, please see the ICAT Submissions Form on the website below. The deadline for submissions is December 18, 2015. http://www.cpe.vt.edu/cptcu/submissions.html 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

10 years

Muse refuses to start

by Menno

Hi, The problem i have was already posted on the Muse Forum. As this seems to be a low-traffic forum and perhaps i am too impatient, i was hoping that i could find some help here. This is my question: we are trying to connect 2 computers, one running Csound and the other running Muse. Syncing will be done with JackTransport.: Csound sends the jacktransport code and Muse on the other machine is the slave. I have written an article on the subject how this can be achieved: https://github.com/kunstmusik/blue/wiki/The-Blue-Connection We have chosen Muse because there is a nice button, called "Jack" in the transport window of Muse, so it is easy to disconnect from the master (Csound) and do things independently. Later you can connect back in with this "Jack" button. Since a few weeks i am not capable to start Muse anymore on the slave machine. On the master machine, with the same system running, Muse works. There is no error shown, it just stops and hangs: Config File </home/menno/.config/MusE/MusE.cfg> no locale <muse_nl_NL>/</usr/share/muse/locale> LOCALE nl_NL open projectfile: No such file or directory Denormal protection enabled. Jack: JackClient::SetupDriverSync driver sem in flush mode Jack: JackPosixSemaphore::Connect name = jack_sem.1000_default_MusE Jack: JackPosixSemaphore::Connect sem_getvalue 0 Jack: Clock source : system clock via clock_gettime Jack: JackLibClient::Open name = MusE refnum = 4 Jack: jack_set_thread_init_callback ext_client 23f7be0 client 23f7be0 Jack: jack_set_graph_order_callback ext_client 23f7be0 client 23f7be0 Trying RTC timer... fatal error: open /dev/rtc failed: Permission denied hint: check if 'rtc' kernel module is loaded, or used by something else Trying ALSA timer... AlsaTimer::initTimer(): best available ALSA timer: system timer got timer = 70 Aquired timer frequency: 1000 I have removed the dll VST and completely remove Muse, reinstall it etc. but this does not help. My system is: AMD, LinuxMint17.2, KXStudio What can i do to trap the error? -- View this message in context: http://linux-audio.4202.n7.nabble.com/Muse-refuses-to-start-tp97894.html Sent from the linux-audio-user mailing list archive at Nabble.com.

10 years

Wanted: Female singer

by F. Silvain

Hey hey everyone, I know there aren't many women on here, but perhaps you can sdpread the word. I'm looking for a feamel singer to perform a pop song of mine. Unfortunately I still have issues with my vocal chords and it will take a few more months. A snippet of the song and more information can be found here: https://freeshell.de/~silvain/innocent.html Feel free to share this info in other social networks. An e-mail will always find me. :) Thanks! <3 Ta-ta ---- Ffanci * Homepage: https://freeshell.de/~silvain * Twitter: http://twitter.com/ffanci_silvain * GitHub: https://github.com/fsilvain

10 years

Music recorded with Linux: The Deschanels

by Riccardo Binetti

My new band released its first EP today, some good old four-chords punk rock :) Everything was recorded, mixed and mastered with Ardour 4.x + various lv2 plugins. Thanks to every developer that made this possible! https://thedeschanels.bandcamp.com/album/feels-love-and-amarone -- rbino

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Linux-audio-user November 2015