Linux-audio-user March 2017

linux-audio-user@lists.linuxaudio.org

55 participants
52 discussions

digital input to stereo receiver, maybe through ethernet

by Dan Hitt

Hi All, I have a pretty ancient stereo receiver that i'm thinking of replacing or supplementing with something newer. It looks like some of the new receivers have an ethernet jack, as well as usb. For example, see these Denons: https://usa.denon.com/us/news/news/177 What i would like to do is get a receiver like that, and put it on my network, and then use it to play audio. Ideally, it could show up on the hosts on the network as some kind of device (like /dev/receiver) to which audio files could be catted. Maybe that's not realistic, but i sure would like to be able to use the receiver from multiple hosts (probably running debian or a derivative) and not have to go through any 3.5 mm or other analog stuff anywhere (not on the computer, and not on the receiver). I wouldn't have to have simultaneous access from the hosts, but would like to plugging and unplugging cables (although i would not want wireless). (Right now about the closest i am to this is with some usb logitech speakers that my system detects and can direct audio to, but i'd like to go through a receiver so that i could use better speakers. However i want to stay all digital and not take any steps through the analog world, and would like to be able to do it from more than one computer.) Does anybody do this? I feel like the answer must be yes, because why would even consumer electronics have so many connectors if not (???). Anyhow, thanks in advance for any advice on whether this can be done, and how to do it (or how close you can get to doing something like this). dan

7 years, 9 months

LinuxSampler/telnet issue

by Jeanette C.

Hey hey, I've recently discovered a challenge with my LinuxSampler. I use LSCP scripts and usually load them like this: cat script.lscp | telnet localhost 8888 It always worked. But now, the connection is opened and closed and nothing else happens. This is very likely connected to my move to Arch Linux. Copying and pasting the script into a telnet terminal works. Any idea why the cat | telnet couldn't work? It would be very much appreciated. Thanks and best wishes, Jeanette -------- When you need someone, you just turn around and I will be there <3

7 years, 9 months

Using multiple sound cards with jack

by Bill Purvis

I currently use qjackctl to control Jack, but would like to be able to use more than one sound card at a time, or at least be able to switch from one to another without having to restart jack. Currently, the QjackCtl Connect window shows a single stereo audio output referred to as 'system'. Is it possible to have more than on audio output here? Bill -- +----------------------------------------+ | Bill Purvis | | email: bill(a)billp.org | +----------------------------------------+

7 years, 9 months

Introduction to Praxis LIVE (Athens) - March 31st

by Neil C Smith

Hi All, There's still some spaces available on a Praxis LIVE workshop I'm leading in Athens this Friday (March 31st) as part of Electric Nights - http://www.medeaelectronique.com/electricnights/portfolio/an-introduction-t… Please spread the word if you know anyone who might be interested. An Introduction to using Praxis LIVE Friday, 31st of March, 17:00 Tutor: Neil C Smith This workshop will introduce you to Praxis LIVE, an open-source, hybrid-visual tool for creative coding. Easily build projections, interactive spaces, audio-visual performances, and much more. The first half of the workshop will cover basic project setup, the intuitive graphical patcher interface, and the range of available components for manipulating audio, video and data. After this, you can continue to explore the graphical aspects of the software, or learn how to “drop down” into code to create your own components and live-code audio/video with Processing, Java and GLSL. http://www.praxislive.org/ Participants must bring their own laptop Workshop duration: ~3 hrs Participation fee: 30 euros Send an email to workshops[at]medeaelectronique.com specifying the workshop you want to participate in Many thanks and best wishes, Neil -- Neil C Smith Artist & Technologist www.neilcsmith.net Praxis LIVE - hybrid visual IDE for creative coding - www.praxislive.org

7 years, 9 months

DIN Is Noise 27a available as live distro and/or to build from source code.

by Jagannathan Sampath

Hi all, DIN Is Noise is a program to make sound, music and noise on a computer running the GNU/Linux operating system :) I'm pleased to announce that version 27a is now available to build from full source code. Or you can try the live distribution [basd on Puppy Linux] that has the DIN Is Noise binary to play with and the development tools to [re]build the source code. The gory details are here: http://dinisnoise.org/download/ Release notes are here: https://workflowy.com/s/JbPNTNeifj If you'd like to fund my independent research & development of DIN Is Noise please visit: http://dinisnoise.org/fundin Your help really helps! If you have suggestions for DIN, please use the Trac to raise a ticket: http://jagernot.xyz:7777/trac/report If you are not averse to joining a Facebook group, I post Work In Progress material of DIN Is Noise on the DINner Circle: https://www.facebook.com/groups/552908494905348/ Regards, Jagannathan Sampath author, DIN Is Noise.

7 years, 9 months

Music: L'Art du théorbiste

by Giso Grimm

Hi all, an Early Music CD completely produced with Ardour was finally released at Brilliant classics: http://www.brilliantclassics.com/articles/l/lart-du-th%C3%A9orbiste-music-f… You may find a short video of one of the pieces on youtube: https://youtu.be/NG9ttY74P1o The musician is explaining his concepts here: https://youtu.be/zs5fVM4m-Pc Actually, the audio recording was back in 2010. The video was recorded a couple of weeks ago, in the same church where we recorded the music - thanks to Robin Gareus for all his LTC stuff! Without that it would not have been possible to synchronize audio and video. And of course thanks to Paul and all other ardour-contributors! A picture of the recording setup can be found on this forum, somewhere down on the page: https://community.ardour.org/node/3248 Have fun! Giso (I have no commercial interest in the sales of this CD.)

7 years, 10 months

[ANN] Vee One Suite 0.8.1 - A Spring'17 release

by Rui Nuno Capela

Great news! The 'Vee One Suite' of old-school software instruments, respectively synthv1 [1], as a polyphonic subtractive synthesizer, samplv1 [2], a polyphonic sampler synthesizer and drumkv1 [3] as yet another drum-kit sampler, are once again out in the wild! Still available in dual form: - a pure stand-alone JACK [4] client with JACK-session, NSM [5] (Non Session management) and both JACK MIDI and ALSA [6] MIDI input support; - a LV2 [7] instrument plug-in. The common change-log for this dot release follows: - Fixed a probable old miss about changing spin-box and drop-down list not reflecting changes immediately into the respective parameter dial knobs. - Fixed middle-button clicking on the dial-knobs to reset to the current default parameter value. - Help/Configure.../Options/Use desktop environment native dialogs option is now set initially off by default. - Added French man page (by Olivier Humbert, thanks). - Make builds reproducible byte for byte, by getting rid of the configure build date and time stamps. And here they go again! **synthv1 - an old-school polyphonic synthesizer [1]** synthv1 0.8.1 (spring'17) released! 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.sf.net/synthv1/synthv1-0.8.1.tar.gz - source package: http://download.sf.net/synthv1/synthv1-0.8.1-31.rncbc.suse.src.rpm - binary packages (openSUSE Tumbleweed): http://download.sf.net/synthv1/synthv1-0.8.1-31.rncbc.suse.i586.rpm http://download.sf.net/synthv1/synthv1-0.8.1-31.rncbc.suse.x86_84.rpm git repos: http://git.code.sf.net/p/synthv1/code https://github.com/rncbc/synthv1.git https://gitlab.com/rncbc/synthv1.git https://bitbucket.org/rncbc/synthv1.git **samplv1 - an old-school polyphonic sampler [2]** samplv1 0.8.1 (spring'17) released! 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.sf.net/samplv1/samplv1-0.8.1.tar.gz - source package: http://download.sf.net/samplv1/samplv1-0.8.1-31.rncbc.suse.src.rpm - binary packages (openSUSE Tumbleweed): http://download.sf.net/samplv1/samplv1-0.8.1-31.rncbc.suse.i586.rpm http://download.sf.net/samplv1/samplv1-0.8.1-31.rncbc.suse.x86_84.rpm git repos: http://git.code.sf.net/p/samplv1/code https://github.com/rncbc/samplv1.git https://gitlab.com/rncbc/samplv1.git https://bitbucket.org/rncbc/samplv1.git **drumkv1 - an old-school drum-kit sampler [3]** drumkv1 0.8.1 (spring'17) released! drumkv1 is 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.sf.net/drumkv1/drumkv1-0.8.1.tar.gz - source package: http://download.sf.net/drumkv1/drumkv1-0.8.1-27.rncbc.suse.src.rpm - binary packages (openSUSE Tumbleweed): http://download.sf.net/drumkv1/drumkv1-0.8.1-27.rncbc.suse.i586.rpm http://download.sf.net/drumkv1/drumkv1-0.8.1-27.rncbc.suse.x86_84.rpm git repos: http://git.code.sf.net/p/drumkv1/code https://github.com/rncbc/drumkv1.git https://gitlab.com/rncbc/drumkv1.git https://bitbucket.org/rncbc/drumkv1.git Licence: The Vee One Suite are free, open-source Linux Audio [9] software, distributed under the terms of the GNU General Public License (GPL) [8] version 2 or later. References: [1] synthv1 - an old-school polyphonic synthesizer http://synthv1.sourceforge.net/ [2] samplv1 - an old-school polyphonic sampler http://samplv1.sourceforge.net/ [3] drumkv1 - an old-school drum-kit sampler http://drumkv1.sourceforge.net/ [4] JACK Audio Connection Kit http://jackaudio.org/ [5] NSM, Non Session Management http://non.tuxfamily.org/nsm/ [6] ALSA, Advanced Linux Sound Architecture http://www.alsa-project.org/ [7] LV2, Audio Plugin Standard, the extensible successor of LADSPA http://lv2plug.in/ [8] GNU General Public License http://www.gnu.org/copyleft/gpl.html [9] Linux Audio consortium of libre software for audio-related work http://linuxaudio.org See also: http://www.rncbc.org/drupal/node/1816 Enjoy && have fun ;) -- rncbc aka. Rui Nuno Capela

7 years, 10 months

Starting qjackctl with pulse

by Bob van der Poel

I'm trying to get pulse and jack to be nice to each other. Running ubuntu 16.10 with cinnamon desktop. I have a pretty simple system. The result of "aplay -l" shows that my main card being used is: card 1: PCH [HDA Intel PCH], device 1: ALC892 Digital [ALC892 Digital] Subdevices: 1/1 Subdevice #0: subdevice #0 Of course, since I'm running pulse, aplay -L changes this to: pulse PulseAudio Sound Server So, now I *think* I know my default routing. It's just pulse sending stuff to hw:1,0. Now, of course, pulse doesn't tell me this. It says I'm using "Analog Stereo Output (unplugged)" from the PulseAudio Volume Control configuration menu. Starting up qjackctl I go to settings. There is no pulse driver, so I select (I think incorrectly!) the alsa driver and HW:PCH,1 and start jack. It appears that it's started and running. Back to the terminal and try to play a file using aplay. Hmmm ... no output! Back to pulse volume ctl. Input Devices shows a jack port. But, no output. I really don't understand this at all. Help. Please. -- **** Listen to my FREE CD at http://www.mellowood.ca/music/cedars **** Bob van der Poel ** Wynndel, British Columbia, CANADA ** EMAIL: bob(a)mellowood.ca WWW: http://www.mellowood.ca

7 years, 10 months

Ground loop noise problem using MSI H-97 Gaming 3 motherboard, SeaSonic SSR‑360GP 360W power supply.

by john gibby

Hi, I have always had this problem with a little ground loop hiss, which I think I've traced down to the small current from the Power supply, used to keep the motherboard turned on. If I plug my amplifiers in without their ground plug (not a good idea, I know), I can get rid of almost all of it. I may go to a 6 d/a channel USB audio interface to get rid of it, but I wonder if anybody knows other things I can do; I wonder if it's just the design of this motherboard, or perhaps of this power supply. If I knew for sure that some other motherboard would not have this problem at all, I might upgrade to it. After a lot of testing, I am sure that there's a spurious signal included on the analog signals coming out of my computer's built-in sound card or PCIE card, that is trying to get to ground and causing the problem. Using a higher quality (2-channel) PCIE sound card reduced it a good bit, but not entirely. I need 6 channels currently (doing DSP in Linux), so I went back to using the on-board analog outputs, and the noise is there, louder, again. Any ideas or education for me? Thanks, John

7 years, 10 months

[ANN] OpenMusic 6.12 - 64-bit for Linux

by anders.vinjar＠bek.no

Hi all. New release of OpenMusic 6.12 for Linux available, this time a 64-bit version. Main new features: - 64 bit support for all platforms (no need for any 32-bit dependendencies) - JUCE based audio i/o and device selection Piles of enhancements and bug-fixes. For more info about OpenMusic: http://repmus.ircam.fr/openmusic/home RPM, DEB and tar-ball available here: https://forge.ircam.fr/p/OM/downloads/ The RPM is packaged on Fedora 24. The DEB is packaged on Ubuntu 16.04.2 (running in a VM, minimally tested). The tar-ball doesn’t care. After extracting, OM can be run without installation from inside the extracted folder. The only caveat is the fonts (omfonts) need to be installed at the usual place. They may be copied from the resources/ folder to wherever your system may look (e.g. /usr/share/fonts on Fedora). Have a look at README.LINUX. All sources are GPL and comes with the application. For access to the current development versions look here: git://git.forge.ircam.fr/OM.git If you want to compile your own versions of the lisp sources there's a guide at http://repmus.ircam.fr/openmusic/sources. If you for some reason (old computer, weird architecture) need to build a local version of OMAudioLib.so (JUCE based audio i/o) you'll find the sources for this lib here: git://git.forge.ircam.fr/omaudiolib.git OM includes a full REPL and basic debugging aids, so if you just want to load lisp-files or edit code there's no need to reach outside the running application. Thanks for all bug-reports! -anders

7 years, 10 months

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Linux-audio-user March 2017