Linux-audio-user

linux-audio-user@lists.linuxaudio.org

2 participants
20641 discussions

JACK2 hardware buffer size for browser-based video conferencing

by Andrew A. Grathwohl

Hi folks, I have a question about my microphone audio quality when participating in a browser-based video conference, i.e., Google Meet and Jitsi on chromium browser. Starting last week, I have received numerous reports from coworkers that my audio is considerably higher quality than normal. Although my audio input has always been a high end vocal mic, the reports have indicated that I sound even better than I usually do in these conferences. My daily driver machine is a self-built Xeon workstation running Arch Linux with (I think) a well-configured RT kernel and JACK2, whose configuration if optimized for USB audio interfaces via this guide <https://wiki.linuxaudio.org/wiki/list_of_jack_frame_period_settings_ideal_f…> [0]. I use a Peluso mic connected directly to my RME Babyface Pro interface, which is running via one of my system's USB2 ports. In pursuit of understanding why this is occurring, I looked at my JACK2 settings to see if I'd changed anything lately. Sure enough, I noticed that I have been working at a larger JACK2 hardware buffer size than normal. I typically set my size to 64 since I do a lot of real-time audio work, but have had it set to 256 or 512 lately to do some different kinds of stuff on the system. So, my question boils down to: is it reasonable to suspect the hardware buffer size has something to do with these sudden quality improvement reports from my friends & co-workers? If so, any insights into why this is the case would be greatly appreciated. Cheers, Andrew [0] https://wiki.linuxaudio.org/wiki/list_of_jack_frame_period_settings_ideal_f…

4 years, 7 months

Force usb-audio device into 44100

by Atte Jensen

Hi I recently got a uTrack24 that I'm gonna use as an audio interface. It works fine, but seems to have a will of it's own, most of the time it starts in 48000, most of the time it eventually switches (seemingly by it's own) to 44100. Frankly I'm not really sure when it does what. Problem is that if I start qjackctl in 44100 it might still hang in 48000 and the audio files will be 48000 with a header indicating 44100. I can fix this with sox, but obviously it should rather work correctly. In any case, is it possible to force it into always using 44100hz, by matching the usb ids with some ALSA(?) config file? If so, a few hints to get me started would be highly appreciated :-) Cheers -- Atte http://latestyoutube.a773.dk

4 years, 7 months

[LAA] [LAD] Mamba - Virtual Midi keyboard for Jack Audio Connection Kit release 2.0

by Hermann Meyer

Hi Mamba release v2.0 is out Mamba is a Virtual MIDI keyboard with some extended, unique features. Key features: Supports jack-interconnect-ALSA MIDI I/O. 16 Channel Live MIDI Looper Every channel use it's own Color to display the played Notes per channel. MIDI File player/recorder Integrated Fluidsynth support. Release v2.0: Add recent file manager to have fast access to last used Sound-fonts and MIDI files Allow to append/remove MIDI files to/from the master loop while playing (Recent file menu) Implement 'View' menu to allow show/hide the MDID CC controllers and/or the Channel/Program/Instrument view. Allow to select the key-size for the MIDI keyboard (Big/Normal/Small) to better match the screen settings. Mamba is released under the BSD Zero Clause License license The GUI is build on libxputty - A damn tiny abstraction Layer to create X11 window/widgets with cairo surfaces https://github.com/brummer10/libxputty To build Mamba from source, the following dependencies must be meat. * libfluidsynth-dev * libc6-dev * libsmf-dev * libcairo2-dev * libx11-dev * liblo-dev * libsigc++-2.0-dev * libjack-(jackd2)-dev * libasound2-dev So, here is the project page: https://github.com/brummer10/Mamba and here you'll find the last release: https://github.com/brummer10/Mamba/releases/tag/v2.0 regards hermann

4 years, 7 months

Yoshimi 1.7.4

by Will Godfrey

There are no new features in this release. It is really another maintenance one, with a few more bugfixes and code refinements. However, there is a check for when you save an instrument but haven't set a type. This asks you to do so, and also recommends including copyright information. You can ignore this and save without these, but then it will be very difficult to identify your patch on a search, and impossible to acknowledge you on any songs that use it. Yoshimi source code is available from either: https://sourceforge.net/projects/yoshimi Or: https://github.com/Yoshimi/yoshimi Full build instructions are in 'INSTALL'. Our list archive is at: https://www.freelists.org/archive/yoshimi To post, email to: yoshimi(a)freelists.org -- Will J Godfrey http://www.musically.me.uk 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.

4 years, 7 months

Making OSC Messages from the Terminal/Shell

by Brandon Hale

Hello all, Does anyone on here know about any programs that can create OSC messages from the terminal? My ultimate goal is to take stdout and convert it to OSC messages, but I first want to be able to create OSC messages from the shell first. Thank you all for any help you may have, Brandon Hale

4 years, 7 months

[LAD] [LAA] Mamba - Virtual Midi keyboard for Jack Audio Connection Kit release 1.8

by Hermann Meyer

Hi Mamba release v1.9 is out Mamba is a Virtual MIDI keyboard with some extended, unique features. This is a quick fix release as I've forgotten to implement jack MIDI input forwarding to ALSA MIDI output. Also it implement proper French translation thanks to Olivier Humbert. Mamba is released under the BSD Zero Clause License license The GUI is build on libxputty - A damn tiny abstraction Layer to create X11 window/widgets with cairo surfaces https://github.com/brummer10/libxputty To build Mamba from source, the following dependencies must be meat. * libfluidsynth-dev * libc6-dev * libsmf-dev * libcairo2-dev * libx11-dev * liblo-dev * libsigc++-2.0-dev * libjack-(jackd2)-dev * libasound2-dev So, here is the project page: https://github.com/brummer10/Mamba and here you'll find the last release: https://github.com/brummer10/Mamba/releases/tag/v1.9 regards hermann

4 years, 7 months

Reminder: Quarterly Release Pact (next release day 2021-01-15)

by software＠linuxaudio.org

The release pact is an informal agreement to aim for shared, scheduled release dates. We agree to release at least four times a year: January, April, July and October the 15th. To participate you just need to do a release. There is no need to register in advance or ask for permission to participate. A release is an important step in the development and life of software. Users look forward to updates and improvements, but they mean additional work for developers. It is often very hard to decide if and when to release, so developers tend to wait and postpone. There do not seem to be any objective, measurable reasons that could lead to a decision. Therefore we have decided to use time as a basis. Why should you schedule (at least) four releases per year? Developer side: * Incentive to release something. Releases are better than git progress. They get packaged, they indicate a (relatively) good state of the program. * Momentum/Peer Pressure: Other people are going to release, so will I. * Healthy, Active Community: Being in a developer group that you see working (by their releases) is a good motivation to do something yourself. User side: * Announcements: Keep the software in the public eye * Trust. People see that the software is in development and is cared for. * The "last updated" date should never be more than 4 months away and always the current year. * Swarm Marketing: A small release does not have much impact and won't get featured often by news sites. A whole group of software releases demands more attention. At the moment we simply release on the same date, but in the future this could grow closer together. As in: joined press statements etc. Minimum Viable Release: * "Fixed typo in documentation" should be enough. Especially for software that has huge release intervals, like a year or longer, there is public uncertainty if a project is just "working as intended" or dead. A minor release with minimal changes is still a signal to the public that the software is not forgotten. * There is always something to do: Non-Code accomplishments like writing documentation and user manuals are also a (very good) reason to release Where can you announce a release? * Send a mail to linux-audio-announce(a)lists.linuxaudio.org .No registration needed for posting, the list is moderated. * Also send a mail to linux-audio-user(a)lists.linuxaudio.org and linux-audio-dev(a)lists.linuxaudio.org . Cross-Posting releases is accepted. These two lists need registration though. * Submit your release, or the whole software to https://libreav.org * Post to https://linuxmusicians.com/viewforum.php?f=24 * Submit a new link or text post to https://old.reddit.com/r/linuxaudio/ * Add or update your entry at https://gitlab.com/nodiscc/awesome-linuxaudio (see https://gitlab.com/nodiscc/awesome-linuxaudio/-/blob/master/CONTRIBUTING.md ) * Add or update your software to Wikipedia * Add or update your software on this wikipedia list https://en.wikipedia.org/wiki/List_of_Linux_audio_software * Chat with your developer-peers on freenodes IRC channel #lad ( Libre/Linux Audio Developers ) Miscellaneous * How to give version numbers: Semantic Versioning https://semver.org/ * Provide release notes and a CHANGELOG https://keepachangelog.com/en/1.0.0/ ("Don’t let your friends dump git logs into changelogs.") * Provide a real release as tarball and/or Github Gitlab release (resulting in a tarball). Distributions want a stable set of files for packaging. A git tag alone is not stable. * Check your software and information (like README, .desktop file, your own website etc.) if it is up to date. Take inspiration from one of the many release guides, such as https://radek.io/2015/11/23/release-checklist/ * The Documentation Compendium: "Why must you document your project? - Various templates & tips on writing high-quality documentation that people want to read." https://github.com/kylelobo/The-Documentation-Compendium#why_document * Does your software still create (dot-)files directly in the homedir? Start supporting the XDG Base Directory Specification https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html

4 years, 7 months

mioctl: open-source iConnectivity mioXL/mioXM control software

by Panu Matilainen

Hi there, This is the initial announcement of mioctl project, bringing iConnectivity X-series (mioXL, mioXM) configuration to Linux and other platforms: https://codeberg.org/pmatilai/mioctl Whereas the the previous generation interfaces from iConnectivity was well-documented and for which an open-source GUI application already exists [1], the X-series control protocol is completely different and undocumented as of this writing, so this project is reverse-engineered by analyzing RTP traffic between Auracle and a mioXL. It is early days in the project but what it can do right now is - List, load and save (including rename) presets - List, add and remove routes - List device ports by their names - List active remaps and filters - List connected usb hosted devices - View device information (model, serial, firmware version) - View network configuration For many missing functionalities it's merely a matter of finding the time to to implement, USB host reservation looks more complicated but should get there eventually. [1] https://github.com/dehnhardt/iconnconfig - Panu -

4 years, 7 months

update of libzita-resampler

by Fons Adriaensen

Hello all, Release 1.8.0 of the zita-resampler library is now available at <http://kokkinizita.linuxaudio.org/linuxaudio/downloads> * Both the Resampler and VResampler classes can now be compiled to use SSE2 intrinsics. This at least doubles the speed, and is enabled in the supplied Makefile. * Some new documented test programs, also showing how to use the two classes. * Some (minor) bugfixes. This should be a drop-in replacement for 1.6.2, which will remain available for some time in case there are any problems. Enjoy, and best wishes for the next solar orbit ! -- FA

4 years, 7 months

[music] Soledad for Guitar and VCV Rack

by Dave Phillips

Greetings ! https://www.youtube.com/watch?v=blAUTXw9tiY An excerpt from a long moody guitar improvisation with a drone sequence in VCV Rack. Very simple throughout but maybe a peaceful listen, maybe a little reflective. I hope all LAU folk are enjoying a safe and mellow holiday season ! All blessings upon you all. :) Best regards, dp

4 years, 7 months

Jump to page:

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