Linux-audio-user February 2024

linux-audio-user@lists.linuxaudio.org

21 participants
19 discussions

by Will Godfrey

Does anyone know of software that can generate MIDI messages from a touchpad? The idea would be to send CCs to a sequencer or soft synth, but being able to send it to an external hardware device would also be very useful. -- Will J Godfrey https://willgodfrey.bandcamp.com/ http://yoshimi.github.io Say you have a poem and I have a tune. Exchange them and we can both have a poem, a tune, and a song.

2 months, 2 weeks

Guitarix.vst v0.2 released

by Hermann Meyer

Guitarix.vst is the full blown guitarix stack as VST3 plugin for Linux, using Juce to wrap the guitarix engine into a VST3 plugin. It allow to load/save your presets, download presets from online and load external LV2 plugs and IR Files, like the guitarix stand-alone version. But all that as a VST3 plugin in your DAW. All parameters been exposed to the DAW, so accessible for automation. Other than the stand-alone, the VST3 version allows to switch the input to a real stereo input, so it may match better your channel strip in the DAW. For Hdpi users, the GUI is full scalable. ![guitarix.vst](https://i.imgur.com/UlezG8n.png) This release fix a issue with startup sequence in Ardour. Also fixed been the issues with the binary like `GLIBCXX_3.4.30' not found. The binary use now pretty standard libstdc++ symbols. It also introduce support for the [Neural Amp Modeler](https://github.com/sdatkinson/NeuralAmpModelerCore) so it's now possible to load *.nam files into a modeler module. Attached binary package [Guitarix.vst3.zip](https://github.com/brummer10/guitarix.vst/releases/downl… is a x86-64 Linux binary. To build from source please use the Guitarix.vst3_0.2.tar.gz package, as only that one contain the needed submodules. If you like to support the guitarix.vst development consider a donation: [Donate](https://paypal.me/brummer1010)

9 months, 3 weeks

Pipewire (Jack) Frames / Buffer / sample rate and audio device selection, device and port names?

by Lorenzo Sutton

Hi list, I have now installed Pipewiere following the Arch Linux wiki. One thing I don't understand is how to set Frames / Buffer for a device and if / how names can be (permanently) changed. I typically would have a bunch of Presets in QJackCtl and select those based on: a) the soundcard b) the use case (higher/lower latency mostly) With Pipwiere while qjackctl still seems to for connections etc. it seems to 'ignore the preset settings. My understanding is that with Pipewire (pipewire-jack?) installed it's as if jack were always running and when jack applications start they will be available via pipewire. So the question is, is there equivalent (preferably GUI) functionality to: a) select only one audio device to use with Jack (on my laptop I typically don't care to have the on-board audio card if I plug in a USB one) b) select a 'profile' with saved frame / buffer values (and possibly sample rate) for that device Regarding a) I can actually switch off a card manually from the KDE audio settings (I'm using KDE). But it would be nice if for certain cases for example the on-board card were switched off when a USB one is plugged, and re-switched on when unplugged. Also, it seems pipewire wants to use the full very long name of a device making it very non-ergonomic in any application where this is exposed is there a way to have shorter names (QJackCtl allows renaming, but that seems local to just itself). For example my UMC204HD is called "UMC204HD 192k Direct UMC204HD 192k" in some instances. About names, pipewire seems to like names like capture_FL or aux0 instead of familiar system:playback_1 which some applications (e.g. like jack_capture) rel(ied) on.. Is there a way to change that? The name makes even less sense for an on-board card which has just a stereo-in and stereo-out. Any hints or suggestions appreciated. Lorenzo.

10 months

guitarix2-0.45.0 released

by Hermann Meyer

This is the long overdone release for guitarix2 version 0.45.0 Guitarix is a modular, virtual amplifier for Linux. With Guitarix you can choose different preamp and amp models and /or could load *.nam files with the Neural Amp Modeler module, to simulate a specific hardware unit. Combine them with various effects and speaker cabinet emulations and/or load your own Impulse Response files to come up with your very own tones. ![guitarix](https://a.fsdn.com/con/app/proj/guitarix/screenshots/Guitarix_Dark.png/max/max/1) This release fix various bugs since the last release from May 2, 2022 It also introduce support for the outstanding [Neural Amp Moduler](https://github.com/sdatkinson/NeuralAmpModelerCore) project page: https://github.com/brummer10/guitarix release page: https://github.com/brummer10/guitarix/releases/tag/V0.45.0

10 months

KVR Music Cafe February Contest

by Will Godfrey

If anyone is interested, this month it's a free-for-all, but limited to 90 seconds max. There's about a week left, so enough time. There aren't any prizes, just the fun of trying to get top spot. So far I'm the only one using Linux. I could do with some company :/ -- Will J Godfrey {apparently now an 'elderly'} https://willgodfrey.bandcamp.com/ http://yoshimi.github.io Say you have a poem and I have a tune. Exchange them and we can both have a poem, a tune, and a song.

10 months

Faust Conference (IFC) 2024 in Turin, Italy, on November 21-22, 2024.

by Stéphane Letz

Soundmit announces that it will host the International Faust Conference (IFC) 2024 in Turin, Italy, on November 21-22, 2024. The IFC is a biennial event that brings together the global community of developers and users of the FAUST audio programming language. The conference offers a unique opportunity to: Learn more about the FAUST language and its various applications Meet other professionals in the audio and music industry Attend talks, workshops, and panels on a variety of topics related to FAUST Contribute to the future development of the language The IFC 2024 will be held two days before the 14th edition of Soundmit, the international fair on synthesizers, electronic musical instruments, digital music and sound art, which will take place in Turin on November 23-24, 2024. The two events will be united for the first time, creating a unique opportunity for participants to fully immerse themselves in the world of digital audio. Companies that wish to support the conference can do so with a small sponsorship that offers a great return in terms of visibility. It is also possible to participate in the Soundmit as an exhibitor to present your products and services to an international audience of professionals. Dates: IFC24 - 21/22 Nov 2024 - Turin SOUNDMIT (14th edition) - 23/24 Nov 2024 - Turin https://www.soundmit.com/en https://ifc24.soundmit.com/en

10 months

Re: Teaching tool to visualize waveforms?

by Kevin Zembower

Fons, Dennis, davic and Lorenzo, Thanks very much for your responses to my question. I never thought of GNU Octave and gunplot for this task, mostly because of the extra steps it would require to listen to the resultant audio file. But, there are definite posibilities there. I've never heard of PureDAta or CSound, but will explore these programs. I also wasn't aware of Sonic Visualizer or Glava, but will explore these, too. Thanks, again, for your advice and guidance. I really appreciate your work to assist me. -Kevin On Tue, 2024-02-20 at 12:00 +0100, > > Message: 1 > Date: Mon, 19 Feb 2024 14:41:49 +0100 > From: Fons Adriaensen <fons(a)linuxaudio.org> > Subject: [LAU] Re: Teaching tool to visualize waveforms? > To: linux-audio-user(a)lists.linuxaudio.org > Message-ID: <ZdNanb9LkIQ2IduF(a)mail.linuxaudio.org> > Content-Type: text/plain; charset=us-ascii > > On Mon, Feb 19, 2024 at 09:21:37AM +0100, Lorenzo Sutton wrote: > > > On 18/02/2024 21:11, Kevin Zembower wrote: > > > > > However, we never saw a visual representation of the combined > > > waveforms. As a former teacher, I thought it would enhance the > > > lessons > > > to also visualize the waveform. > > > > I would really recommend (as Dennis already suggested) to use Pure > > Data (aka > > Pd) [1] in the teaching / learning pipeline. While it has a little > > learning > > curve - basic examples like this are quite easy to create and > > students could > > also install it and try out stuff and try 'hacking' the examples. > > Good advice. > > If you just want to show mathematically defined waveforms then > gnuplot can be useful. For example > > gnuplot> set grid > gnuplot> plot [0:12.6] sin(x) + sin(2*x)/2 + sin(3*x)/3 + sin(4*x)/4 > + sin(5*x)/5 > > will show a nice approximation to a sawtooth. > > One thing I usually point out to students is that the shape > of a waveform doesn't tell you much about how it will sound. > For example, try > > gnuplot> plot [0:12.6] sin(x) + cos(2*x)/2 + cos(3*x)/3 + sin(4*x)/4 > + sin(5*x)/5 > > which sounds just the same as the previous one but looks quite > different. > > > Ciao, > > -- > FA > > > ------------------------------

10 months, 1 week

Grame with Faust selected for Google Summer of Code 2024

by Stéphane Letz

Hi everybody, Grame with the Faust project is selected as a Google Summer of Code 2024 mentor organisation for the third year, see: https://summerofcode.withgoogle.com/programs/2024/organizations/grame Stéphane

10 months, 1 week

Adjusting Pipewire Jack Buffer Size

by Brandon Hale

Hello all, Do any pipewire users here know of a way to adjust the buffer for pipewire for jack applications? Ideally, I'm looking for something that is a gui app or client command that can be adjusted on the fly, or before loading an application. I want to try to reduce latency for a performance and pipewire has been working great otherwise. My system is the latest universalblue fedora sericea and I am using a pro-audio interface. Brandon Hale

10 months, 1 week

MOTU 828 mkII USB

by soffioalcuore＠posteo.net

dear list members, I work in a school for some months now and a former colleague used to have a quite well equipped studio here. When I arrived he himself and most of the stuff he had here was gone. What's left is a MOTU 828 mkII USB. I would like to re-establish the possibilities of recording, podcasting etc at the school. but not on windows, but, of course, linux. now my question, does anybody of you know of a (secret) way of making that MOTU interface working in linux? I would love to use it w/o wiindows. any hint is much appreciated! cheers, christoph

10 months, 1 week

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Linux-audio-user February 2024