planet.linuxaudio.org

May 20, 2026

Home on Libre Arts

ALSA Scarlett GUI 1.0beta9

Geoffrey D. Bennett has just released a major update of ALSA Scarlett GUI, a control program for Focusrite’s Scarlett, Clarett, and Vocaster audio interfaces.

DSP control

For Vocaster One and Two, Geoffrey added controls for the built-in DSP that includes a pre-compressor filter, a compressor, and a parametric EQ.

DSP controls

The controls on the pre-compressor filter and parametric EQ graphs are interactive: you can pick handles and move them around (Q can only be edited numerically though, it seems).

You can also choose between 12 filter types:

Filter types in DSP controls of ALSA Scarlett GUI

Configuration

This is another new window where you can toggle the visibility of unused channels, set stereo linking, and give custom names to inputs and outputs.

Configuration window for Vocaster Two in ALSA Scarlett GUI

In addition, you can set the target level for the Autogain feature.

For models with larger number of IOs (think Gen4 18i20), this is also where you control monitor groups:

Monitor groups in ALSA Scarlett GUI

Routing window updates

There have been some improvements here:

  • Routing lines now display a real-time glow effect that reflects the audio signal level passing through the connection.
  • When a routing connection has a hidden port, there’s an arrow indicator at the visible end now.
  • Adjacent stereo-linked channels are now displayed as a single stereo port.
  • On 4th Gen 16i16/18i16/18i20 interfaces with monitor groups configured, the routing window now shows the effective audio routing.

Mixer window updates

Just like Routing, the Mixer window got its share of UX/UI updates:

  • Mixer input and output labels now display a real-time horizontal glow bar that reflects the signal level at that port.
  • Gain knobs now include a signal level meter inside the dial (except for Gen1 devices that don’t support it).
  • When channels are stereo-linked, the mixer displays them as a single stereo fader.

Presets

You can now save and restore presets from the main window.

Firmware update changes

For the 4gen devices with larger number of IOs, the program now support multi-step firmware upgrade: leapfrog, then ESP, then application.

Device support

The changes mainly affect the “big 4gen” devices and Vocaster units:

  • Scarlett Big 4th Gen (16i16, 18i16, 18i20) support now includes hardware identification, monitor groups, input mute, and output volume/mute/dim controls.
  • Vocaster interfaces now have dedicated mute controls for speaker and headphone outputs in the main window.

For more detailed info, please see release notes.

May 20, 2026 12:00 AM

May 19, 2026

Ardour 9.5 released

We are pleased to announce the release of Ardour 9.5. The new version comes with new features, quality-of-life improvements, and bugfixes. For this release, we focused on MIDI editing and implemented chord editing and reference (ghost) notes display in pianoroll interfaces.

For the curious, yes, we did “release” both 9.3 and 9.4 but the binary packages were missing the chord definitions file that is central to one of the major features of this release cycle. Having realized the mistake, we took the opportunity to do a bit more polishing and bug fixing before finally packaging 9.5. Steps have been taken so that anyone who paid for either the 9.3 or 9.4 packages has been marked as paying for 9.5 instead, and their download count reset to zero. If you are such a person and have issues downloading 9.5, contact help@ardour.org

The full release notes are, as usual over here and you can download this release from the usual place.

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by Paul Davis at May 19, 2026 05:30 PM

May 11, 2026

GStreamer News

GStreamer 1.28.3 stable bug fix release

The GStreamer team is pleased to announce another bug fix release in the new stable 1.28 release series of your favourite cross-platform multimedia framework!

This release only contains bug fixes as well as a number of security fixes. It should be safe to update from 1.28.x, and we recommend you do so at your earliest convenience.

Highlighted bugfixes:

  • Various security fixes and playback fixes
  • applemedia: vtdec stability, MoltenVK integration and planar video format handling fixes
  • audioresample: Fix regression on armv7hf
  • bpmdetect: Fixes for stereo and multi-channel modes
  • devicemonitor: wait for start thread to finish when listing devices so all the info is there for e.g. v4l2 provider
  • fallbacksrc: Add fallback-source and enable-dummy properties
  • nvidia: fix cudaconvert performance regression and nvdec device creation regression
  • opengl: add GBRA swizzle support, and fix glcolorconvert vertical flip issue on crop
  • rtspsrc: include user-agent property in HTTP tunnel requests and fix mikey regression
  • threadshare: add leaky mode to dataqueue-based elements
  • v4l2: fix negotiation error when trying to force stateful decoders to output dmabufs
  • webrtcsink: Add support imx8mp vpuenc_hevc hardware H.265 encoder
  • cerbero: Extend gst-plugins-rs melding to Darwin platforms for smaller binary sizes and static linking improvements
  • inno Windows installer fixes, including silent install mode via the command line
  • macOS: provide script to allow uninstalling the package; relocate absolute paths to Python.framework in wheels
  • Various bug fixes, build fixes, memory leak fixes, and other stability and reliability improvements

See the GStreamer 1.28.3 release notes for more details.

Binaries for Android, iOS, Mac OS X and Windows will be available shortly and will be published on the Downloads page.

May 11, 2026 11:00 PM

digital audio hacks – Hackaday

Binaural Microphone on a Budget

For as many speakers as someone can cram into a surround sound system, humans still (generally) only have two ears to listen to those sounds with. This means that, for recording purposes, it’s possible to create incredibly vivid three-dimensional sounds with just two microphones, provided that there’s an actual physical replica of a human ear attached to each microphone. This helps ensure that all the qualities of the sounds are preserved in a way a real human would experience them, and as [David Green] demonstrates, these systems don’t need to be very expensive.

This build doesn’t just use models of human ears for recording sounds through. The silicone ears are mounted on a styrofoam mannequin head as well, which provides some sound isolation between the two microphones, much like a real human head. The ears are mounted in appropriate locations with the microphones installed inside, and the entire microphone apparatus is positioned on a PVC rig with a camera so that binaural audio will be recorded for anything [David] points it at.

Although he had some issues interfacing two microphones using 19th-century technology instead of soldering everything together, the build still eventually came together, and only for around $70 USD. However, this build is a bit dated now, so prices may have changed by now. It’s still a great way to produce realistic stereo sound without breaking the bank, but it’s not the only way of getting this job done.

by Bryan Cockfield at May 11, 2026 02:00 AM

May 10, 2026

digital audio hacks – Hackaday

Speech Jammer Gets Jammed Up

This project is perhaps the single most passive-aggressive thing we’ve ever seen on this site: rather than tell someone directly to ‘shut up’, [Blytical]’s speech jammer lets you hack their brain from across the room to stop them from speaking. It’s also a bit of an object lesson in why you shouldn’t just copy reference implementations without careful study — by his own implementation, [Blytical] was forced to learn a lot more than he intended going into this project.

The brain hack behind it is called ‘delayed auditory feedback’: by feeding their speech back to the target with a short delay — only 50 to 200 ms — it creates a confounding effect that is apparently very difficult to speak through. The array of ultrasound transducers is used to accurately aim the audio by serving as an inaudible, low-spread carrier wave, as we saw in another project this year. A shotgun mike picks up the audio from the speaker you wish to harass, and an array of audio processing circuitry takes care of the rest.

That’s where problems happen, as [Blytical] admits he just tossed some reference implementations onto a PCB without bothering to think too hard about what he was doing. It’s the datasheet version of vibe coding, and it usually goes about as well — sometimes perfectly, but rarely without a lot of troubleshooting. That troubleshooting is really, really hard when you don’t quite understand why things were laid out the way they were on the datasheet. We don’t blame [Blytical], you can learn a lot when you bite off more than you can chew. The fact that he risked this failure mode rather than do the whole thing in software with a Pi says good things about how he’s conducting his education.

It’s a shame, though, because we’ve been waiting to see another one of these speech jammers in action for quite some time. Perhaps someone will try again; the ultrasonic array portion seems solved, so if the delay circuit was the problem, perhaps a tiny tape loop would suffice.

by Tyler August at May 10, 2026 11:00 AM

News – Ubuntu Studio

Ubuntu Studio’s New Home: What’s Changing and Why

Homepage of Ubuntu Studio showcasing a content creation studio with various creative tools including musical instruments, a camera, and editing software elements.

Ubuntu Studio’s web presence has been spread across several Canonical-hosted systems for a long time: the main website on an old Canonical web server, the Ubuntu Community Help Wiki at help.ubuntu.com/community/UbuntuStudio, and the Ubuntu Developer Wiki at wiki.ubuntu.com/UbuntuStudio. Those platforms served their purpose, but each had become a poor fit for how the project actually works today.

What’s Moving

The main Ubuntu Studio website has already moved away from Canonical hosting and onto its current home. That move was driven by necessity: Canonical shut down the old web server that had hosted the site, so Ubuntu Studio needed a new home for its primary web presence. This has been a mostly transparent process and most users would never have noticed a difference.

Screenshot of the Ubuntu Studio Community Help page, featuring sections for user and developer wikis, support information, and links to contributions and resources.

The Community Help Wiki — the place where users have always gone to find answers about audio configuration, hardware support, the Audio Handbook, and getting started with Ubuntu Studio — is being mirrored and maintained directly on ubuntustudio.org at /help/. Every page you’re used to is coming with us: the Pro Audio Intro, the Ubuntu Studio Audio Handbook and all its chapters, the FAQ, hardware support information, terminal basics, troubleshooting guides, and community information. Most of this is outdated now, and we need help to bring it up to modernization.

Screenshot of the Ubuntu Studio developer wiki homepage featuring navigation links, a welcome message, and information about the Ubuntu Studio project and community.

The Developer Wiki — home to the team’s internal processes, release planning, testing documentation, artwork resources, and packaging and development notes — is moving to ubuntustudio.org at /wiki/. The full section structure is preserved: Testing, PR & Support, Artwork, Packaging/Development, Documentation, and Organization are all there. This information is also outdated.

Why Now

The website move and the wiki move do not have exactly the same origin.

For the main website, the trigger was straightforward: Canonical shut down the old web server that hosted it. Ubuntu Studio had to move the site in order to keep a public home on the web.

For the help and developer wikis, the issue was the editing experience and maintenance burden. The old MoinMoin-based wiki workflow is cumbersome, slow, and awkward to work with. Its markup is not standard Markdown, which makes editing, reviewing, and migrating content more difficult than it should be. Over time, that friction made it harder to keep pages current, fix outdated instructions, and encourage casual contributors to improve documentation.

Meanwhile, ubuntustudio.org has been running on WordPress for some time, and the team has been using GitHub for development work. By routing our documentation through a GitHub repository — using the Git it Write plugin to publish markdown directly to WordPress — we get something we’ve never really had before: a documentation workflow that fits naturally alongside our other development work. Pull requests, issue tracking, version history, and a low barrier to entry for new contributors all come with it.

What This Means for Contributors

If you’ve ever wanted to fix something on the old wiki and been put off by the process, this is your opening. The content lives in a public GitHub repository. Find the file, fix the text, open a pull request. That’s it.

The content is organized into buckets that map to the old wiki structure:

  • help/content/support/ — support pages (FAQ, hardware, audio configuration, etc.)
  • help/content/handbook/ — the Audio Handbook and Pro Audio Intro
  • help/content/community/ — IRC, mailing lists, joining the team
  • help/content/reference/ — resources, links, wiki guide
  • wiki/content/ubuntu-studio/ — developer wiki pages

If you’re editing a page that has outdated information, and there’s plenty of it, particularly around the old PulseAudio/JACK workflow that predates PipeWire — this is the place to update it.

What Isn’t Changing

The old wiki pages at help.ubuntu.com and wiki.ubuntu.com aren’t going anywhere immediately. Canonical maintains those as part of Ubuntu infrastructure, and they’ll continue to exist. Our goal isn’t to break any existing bookmarks or search results, it’s to have a home where we can keep things current.

We’re also not rewriting the documentation wholesale. The content of the mirrored pages is as faithful to the originals as it can be, with updates where the old guidance referred to software or workflows that no longer apply to current Ubuntu Studio releases.

Where to Find Everything

If you find something wrong, missing, or out of date — open a pull request, or file an issue and let the team know.

by eseickmeyer at May 10, 2026 02:25 AM

May 06, 2026

Linux Archives - CDM Create Digital Music

QuadTrack is a new groovebox for the Amiga (really), plus PC and Mac

It's the biggest Commodore Amiga news of the week: Pink Parrot Studio is launching a new "Dynamic Performance Sequencer" with powerful modulation and Trig Tools option, built for jamming right on the computer keyboard. And there's a music album to match. But don't worry: if you have one of those inferior PC or Macintosh machines, you can still get in on the fun with an emulator, no installation or setup required.

The post QuadTrack is a new groovebox for the Amiga (really), plus PC and Mac appeared first on CDM Create Digital Music.

by Peter Kirn at May 06, 2026 11:23 AM

May 03, 2026

Linux Archives - CDM Create Digital Music

Link Audio, now in Max, Pd, VCV Rack, TouchDesigner, oF, and plug-ins, free

Ableton Live 12.4 is inbound, with Link Audio support coming to Live, Move, Note, and Push. But Live Audio can also be about routing audio over a network to other hosts, too. Julien Bayle (VOID) has an early, open-source implementation. If you're ready to start experimenting even while this API is still in alpha, you've got a wide variety of sound and visual tools to try, all for free.

The post Link Audio, now in Max, Pd, VCV Rack, TouchDesigner, oF, and plug-ins, free appeared first on CDM Create Digital Music.

by Peter Kirn at May 03, 2026 03:16 PM

May 01, 2026

rncbc.org - a.k.a. Rui Nuno Capela

Qtractor 1.6.0 - A Spring'26 Release

Qtractor 1.6.0 - A Spring'26 Release

Hi all,

Qtractor 1.6.0 (spring'26) is released!

Change-log:

  • Probable fix to LV2 plug-in UIs in reflecting state/preset changes visually.
  • OSC (Open Sound Control) support has been finally introduced, similar to keyboard and MIDI controller shortcuts, it allows the discrete mapping of OSC handlers to any main menu command actions (cf. View/Options.../OSC)
  • Fixed move/copy of Audio/MIDI Insert pseudo-plugins to keep their respective send/return connections.
  • Improved main session File/Save As... requester dialogs, now taking into a better account the selected file type filters: Default session files (*.qtr), Regular session files (*.qts), Template session files (*.qtt) and Archive/zip session files (*.qtz); drop useless All files (*.*) filter.

Description:

Qtractor is an audio/MIDI multi-track sequencer application written in C++ with the Qt framework. Target platform is Linux, where the Jack Audio Connection Kit (JACK) for audio and the Advanced Linux Sound Architecture (ALSA) for MIDI are the main infrastructures to evolve as a fairly-featured Linux desktop audio workstation GUI, specially dedicated to the personal home-studio.

Website:

https://qtractor.org

Project page:

https://sourceforge.net/projects/qtractor

Downloads:

https://sourceforge.net/projects/qtractor/files

Git repos:

https://git.code.sf.net/p/qtractor/code
https://github.com/rncbc/qtractor.git
https://gitlab.com/rncbc/qtractor.git
https://codeberg.org/rncbc/qtractor.git

Wiki:

https://sourceforge.net/p/qtractor/wiki/

License:

Qtractor is free, open-source Linux Audio software, distributed under the terms of the GNU General Public License (GPL) version 2 or later.

Enjoy && Keep the fun!

Donate to rncbc.org using PayPal Donate to rncbc.org using Liberapay

rncbc

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by rncbc at May 01, 2026 11:00 AM

Home on Libre Arts

GSoC2026: what to expect

Google has just published the list of students accepted into the Google Summer of Code 2026 program.

Some of the teams usually participating are off this year: Krita and Inkscape are temporarily out of mentors. Let’s take a look at the rest of them.

GIMP

Akascape will completely revamp the keyboard shortcuts configuration dialog and add support for importing and exporting presets, as well as support for multiple shortcuts per action.

blezecon will work on creating an automated infrastructure for validating, publishing, and distributing GIMP extensions.

v4vansh will update GIMP’s text engine to use HarfBuzz directly to extract font data, so that you have better control over formatting and access to various OpenType features.

Waris Maqbool will create PSD-compatible gegl:inner-glow and gegl:bevel operations to use in the PSD importer. They will also port the legacy Sharpen to make it a GEGL meta-operation.

Graphite

This vector/bitmap editor is still relatively unknown, and yet this isn’t the first time they are GSoC participants.

∅space will add currently missing support for SVG features like gradients, patterns, and a text-on-path. They will also create a fallback system so that currently unsupported (as in editing) features would be rasterized and imported as bitmaps.

Ayush Amawate will refactor the on-canvas gizmo code to remove duplicated code and add reusable gizmos (slider, dial, angle) for shape-drawing tools.

Bunnyy aims to improve the text functionality: add a lorem ipsum generator, formatting spans and typographical parameters, text on path, commands to enforce lower-/upper-/title-casing, hyphenation, font fallbacks, flows between text areas, ligatures and vertical typing toggles, and so on.

Timon Schelling will be adding a GPU-accelerated brush engine. The plan is to introduce non-destructive, resolution-independent stroke rendering with support for stylus pressure and tilt.

Yohei Yamasaki will refactor Graphite to create a more generalized graphic representation of paints (colors, gradients, patterns, etc.) as ordinary layers. The net outcome will be dedicated Gradient and Pattern nodes, as well as updated Fill and Stroke nodes.

Synfig

ahmedfathy0-0 will add a lattice-based free-form deformation layer to enable organic deformations like squash-and-stretch or facial movements.

Yukta will add per-character text animation support so that things like a typewriter effect are easy to achieve.

Digikam

Srirupa Datta will add an new interface to the database search engine and hook up a lightweight LLM to translate natural-language requests into the right combination of structured filters.

Blender

Bipin_ will be adding importing and exporting of OpenTimelineIO (.otio) files to VSE.

il4n will add handles to transitions such as crossfades in the VSE, so that users can move the transitions and change their length.

Criss-Ivana will port the following matrix & math utility nodes into the Compositor: Matrix SVD, Bit Math, Boolean Math, Integer Math, Compare, Float To Int, Hash Value, and Random Value.

Evan Luo will improve mesh smoothing by overcome fundamental limitations, such as volume shrinkage, no frequency selectivity, and selection boundary artifacts.

Henry Jiang will improve loop editing: add clone support for Edge Slide, implement edge loop adjustment via spline interpolation, and add loop cut curvature preservation.

Jerry Wei will improve the brush engine: add brush tip roundness for more brushes, customizable pressure curves for all pressure-sensitive parameters, customizable brush toggling and improved toggle display, etc.

Owen O’Malley will introduce the MaterialX standard node library into Blender’s shader editor as first-class native nodes.

Yogeshgouda_Patil will improve regression test coverage.

FreeCAD

Aymi will be working on bridging the 3rd-party Motion workbench with the FEM workbench to created animated multibody dynamics visualizations. It’s going to be a very challenging project, but she has great mentors on her side: long-time FEM contributor Mario Alexis and multi-body dynamics expert Aik-Siong Koh who is behind the assembly solver of FreeCAD and one of the two developers behind MbdFEM.

Morten Vajhøj will be overhauling the user experience in the TechDraw workbench. His focus will be on changing the way you annotate geometry: instead of selecting an object and then choosing the command you will now select what you want to do and then what to apply it to. This will bring TD in line with the rest of FreeCAD. Of course, applicable objects under the cursor will be highlighted, and inapplicable objects will be unavailable for the selected tool.

Nishendra Singh will attempt to revive and modernize the Robot workbench. This is going to be a colossal effort that, I’ve no doubt, will have to continue past the GSoC22026 deadline. This project’s scope is replacing CSV/DH file imports with URDF imports, exporting the joint & trajectory data, Orocos KDL kinematics library refresh (currently years behind the upstream), and updating the documentation.

Parag Debnath will integrate the buildingSMART Data Dictionary into the BIM workbench, so you can search and apply international classification standards from the cloud to selected IFC entities.

YashSuthar983 will create an initial version of the 3D parametric sketching workbench that could be later merged into the existing Sketcher workbench. For that, the student will extend the existing PlaneGCS solver to 3D by adding new primitives and spatial constraints.

Some of the students have been active in the project recently. Morten Vajhøj has 8 pull requests for the Measure tool merged. For YashSuthar983, 25 pull requests have already been merged (mainly around the core, Sketcher, and the Measure tool), another 5 PRs are open (for Sketcher, the Measure tool, and PartDesign).

BRL-CAD et al.

In the Google Summer of Code program, BRL-CAD is an umbrella organization comprised of OpenSCAD, IfcOpenShell, Bonsai BIM (formerly Blender BIM), and BRL-CAD itself.

AnshulPatil2005 will improve Manifold’s CI and benchmarking by adding missing determinism, sanitizer, and performance regression checks.

Bidyendu will add an optional AI assistant for OpenSCAD using either locally running models via Ollama or any OpenAI-compatible server, at user’s preference. The intention is to give users the ability to use the benefits of AI without compromising privacy.

RaghavSharma0125 will add an MCP server to BRL-CAD, so you can interact with the program through any external MCP client.

Kanchan Borole will improve the Geometry Verification and Validation (V&V) user interface in Arbalest, the Qt-based UI for BRL-CAD.

MYoder will enhance Bonsai BIM (formerly Blender BIM) with tools for BIM-type modeling of roadways using the IFC 4.3 schema. TThe scope of the project is vertical alignments (horizontal already implemented), cross-section profiles, and corridor generation.

Pitivi

The video editor has been participating at GSoC for years through the GNOME Foundation org. This year, Michael Calabrese will be rewriting the timeline ruler in GTK4/Rust to make it more robust.

Kdenlive

Yash Bavadiya will improve the UI for three parts of the program: create a tabbed per-channel widget for the Curves effect, implement a gradient editor with arbitrary draggable color stops, and add Bezier handle support on RemapView connector lines with easing presets for the Time Remapping panel.

Mixxx

Ayush Sah will rebuild the LateNight skin as a 100% native QML interface. This is supposed to reduce the CPU overhead and bring cleaner architecture.

Priyanshuwu will add PipeWire support so that audio can be freely routed. They will also attempt to achieve ALSA-comparable latency with the new audio backend.

GRAME

GRAME is not a very well-known org, but if you are into audio, you may have heard of Faust, a functional programming language for sound synthesis and audio processing. There are two very cool GSoC projects this year.

Blake North will be integrating Faust into Bespoke Synth. Essentially, you will be able to edit and run Faust programs in real-time.

Another student, Mithaniel V., will integrate Faust into the Godot game engine. There will be two deliverables: a Faust Godot extension and a command line tool to compile Faust programs into Godot native language statically.

More projects

I don’t usually cover VLC and FFmpeg, but they do have students this year as well.

If you are interested in astronomy and space exploration, check our OpenAstronomy and LibreCube projects.

May 01, 2026 12:00 AM

April 30, 2026

rncbc.org - a.k.a. Rui Nuno Capela

Vee One Suite 1.4.2 - A Spring'26 Release

Vee One Suite 1.4.2 - A Spring'26 Release

Hi all,

The Vee One Suite, the gang-of-four old-school software instruments,

  • synthv1 as a polyphonic subtractive synthesizer;
  • samplv1 a polyphonic sampler synthesizer;
  • drumkv1 as yet another drum-kit sampler;
  • padthv1 a polyphonic additive synthesizer.

Are here updated to the (northern) Spring'26 season...

Still delivered in dual form:

  • a pure stand-alone JACK client with JACK-session, NSM (Non/New Session Management) and both JACK MIDI and ALSA MIDI input support;
  • a LV2 instrument plug-in.

Change-log:

  • Fixed the opening/loading sample file of an empty element, often requiring a second try to show up correctly on the LV2 Plug-in's GUI (JACK stand-alone was/is fine; applies to drumkv1 only)
  • Bumping into next development cycle (Qt >= 6.11)

 

The Vee One Suite are free, open-source Linux Audio software, distributed under the terms of the GNU General Public License (GPL) version 2 or later.

 

synthv1 - an old-school polyphonic synthesizer

synthv1 1.4.2 (spring'26) is released!

synthv1 is an old-school all-digital 4-oscillator subtractive polyphonic synthesizer with stereo fx.

LV2 URI: http://synthv1.sourceforge.net/lv2

website:

https://synthv1.sourceforge.io
http://synthv1.sourceforge.net

project page:

https://sourceforge.net/projects/synthv1

downloads:

https://sourceforge.net/projects/synthv1/files

git repos:

https://git.code.sf.net/p/synthv1/code
https://github.com/rncbc/synthv1.git
https://gitlab.com/rncbc/synthv1.git
https://codeberg.org/rncbc/synthv1.git

 

samplv1 - an old-school polyphonic sampler

samplv1 1.4.2 (spring'26) is released!

samplv1 is an old-school polyphonic sampler synthesizer with stereo fx.

LV2 URI: http://samplv1.sourceforge.net/lv2

website:

https://samplv1.sourceforge.io
http://samplv1.sourceforge.net

project page:

https://sourceforge.net/projects/samplv1

downloads:

https://sourceforge.net/projects/samplv1/files

git repos:

https://git.code.sf.net/p/samplv1/code
https://github.com/rncbc/samplv1.git
https://gitlab.com/rncbc/samplv1.git
https://codeberg.org/rncbc/samplv1.git

 

drumkv1 - an old-school drum-kit sampler

drumkv1 1.4.2 (spring'26) is released!

drumkv1 is an old-school drum-kit sampler synthesizer with stereo fx.

LV2 URI: http://drumkv1.sourceforge.net/lv2

website:

https://drumkv1.sourceforge.io
http://drumkv1.sourceforge.net

project page:

https://sourceforge.net/projects/drumkv1

downloads:

https://sourceforge.net/projects/drumkv1/files

git repos:

https://git.code.sf.net/p/drumkv1/code
https://github.com/rncbc/drumkv1.git
https://gitlab.com/rncbc/drumkv1.git
https://codeberg.org/rncbc/drumkv1.git

 

padthv1 - an old-school polyphonic additive synthesizer

padthv1 1.4.2 (spring'26) is released!

padthv1 is an old-school polyphonic additive synthesizer with stereo fx

padthv1 is based on the PADsynth algorithm by Paul Nasca, as a special variant of additive synthesis.

LV2 URI: http://padthv1.sourceforge.net/lv2

website:

https://padthv1.sourceforge.io
http://padthv1.sourceforge.net

project page:

https://sourceforge.net/projects/padthv1

downloads:

https://sourceforge.net/projects/padthv1/files

git repos:

https://git.code.sf.net/p/padthv1/code
https://github.com/rncbc/padthv1.git
https://gitlab.com/rncbc/padthv1.git
https://codeberg.org/rncbc/padthv1.git

 

Enjoy && Have (lot's of) fun.

Donate to rncbc.org using PayPal Donate to rncbc.org using Liberapay

rncbc

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by rncbc at April 30, 2026 07:00 PM

April 23, 2026

News – Ubuntu Studio

Ubuntu Studio 26.04 LTS Released

Ubuntu Studio 26.04 LTS logo featuring a stylized raccoon illustration and the text 'Resolute Raccoon' on a dark background.

The Ubuntu Studio team is pleased to announce Ubuntu Studio 26.04 LTS, code-named “Resolute Raccoon.” This marks Ubuntu Studio’s 38th release.

This Long-Term Support (LTS) release is supported for 3 years, through April 2029.
An Ubuntu Studio LTS arrives once every two years. This is more than a routine update: it is a long-horizon milestone for creators, educators, studios, and production systems that prioritize dependability.

This release reflects months of development, packaging, design, testing, and community feedback, all focused on making Ubuntu Studio production-ready from first boot.
Whether you record music, edit video, design graphics, or publish layouts, the goal is simple: stay out of your way and let your creativity lead. That shows up in practical improvements across this release, from desktop layout choice and modernized setup tools to updated defaults and day-to-day polish.

For full technical details, known issues, and upgrade instructions, please see the Ubuntu Studio 26.04 LTS Release Notes.

You can download Ubuntu Studio 26.04 LTS from the download page.

Why This LTS Is Special

  • You can trace a clear through-line across recent LTS cycles: 20.04 LTS was the last Xfce-based LTS and set up the desktop transition, 22.04 LTS stabilized the Plasma era, and 24.04 LTS introduced the new Subiquity/Flutter installer generation and PipeWire 1.0 maturity.
  • Ubuntu Studio 26.04 LTS builds on that foundation with practical workflow improvements instead of a single marquee feature: three selectable desktop layouts, fully rewritten Installer and Audio Configuration tools (Python with GTK4 and Qt6 frontends), and broader translation coverage.
  • It also brings forward ideas that were future-looking in earlier cycles, especially minimal-install flexibility and easier post-install workflow selection, while adding production-focused updates like FFADO support, easier PipeWire tuning, and new default additions such as Loopino and Plasma PipeWire Settings.
  • As with prior Ubuntu Studio LTS releases, this cycle carries a three-year support window, through April 2029.

Major Highlights

Three desktop layouts, one familiar home

This release includes three selectable desktop layouts:

  • The classic Ubuntu Studio top-panel layout
  • A macOS-like layout with global menu and dock
  • A Windows-like bottom-panel layout

Creators coming from different platforms get a familiar starting point and a faster path to feeling at home.

The default layout for new installs was selected by community vote. For background on the design direction, see Coming to 26.04 LTS: Three Layouts.

Screenshot of Ubuntu Studio desktop environments including Ubuntu Studio, Ubuntu Studio Classic, Ubuntu Studio Classic Dark, Ubuntu Studio Dark, Ubuntu Studio Dark macOS alike, and Ubuntu Studio macOS alike.

Installer and configuration tools modernized

Screenshot of the Ubuntu Studio Installer interface, displaying a list of installation packages with checkmarks indicating selected options for audio, graphics, photography, video, and wallpapers, along with options for publishing and music education.

Ubuntu Studio Installer and Ubuntu Studio Audio Configuration were completely rewritten, with modern interfaces and desktop-aware behavior.

This is more than a visual refresh. Both tools were rebuilt from the ground up in Python with dual GTK4 and Qt6 frontends, and automatically select the interface that best matches your desktop environment.

Internationalization also took a major leap forward: both tools now include translations across 21 languages, helping more creators configure their systems comfortably in their preferred language.

Audio production gets more powerful

Ubuntu Studio Audio Configuration window with options to configure audio settings, change kernel boot parameters, start a dummy audio device, or disable PipeWire-JACK.

Ubuntu Studio Audio Configuration now includes built-in support for FFADO FireWire devices and simpler PipeWire tuning through menus instead of manual entry.

For musicians and engineers using professional FireWire interfaces, FFADO support improves compatibility with legacy-but-still-essential studio hardware without extra manual setup.

PipeWire sample-rate and buffer controls are now easier to access and adjust quickly, making low-latency tuning far more approachable for both new and experienced users.

Better defaults for creators

VLC is now the default media player, offering broad format compatibility and a familiar, dependable playback experience for day-to-day media review.

vmpk now replaces jack-keyboard, giving MIDI-focused users a more modern and flexible virtual keyboard workflow.

More quality-of-life improvements across the release

Beyond the headline features, this release includes several practical improvements that make daily use smoother:

  • Live sessions now inhibit lock screen/screensaver to prevent interruptions during testing or demos
  • SDDM and splash visuals were refined for a cleaner login and boot experience
  • Desktop menus include translation coverage improvements
  • Theme metadata updates improve Plasma 6 compatibility and consistency
  • Key workflow tools were substantially updated, including QPrompt, RaySession, and Patchance

New in 26.04 LTS

A screenshot of the Pipewire Settings interface displaying options for Quantum (1024) and Sample Rate (48000), along with a latency measurement of 21.33 ms and a refresh button.
  • Three selectable desktop layouts with community-voted default

  • Rewritten Installer and Audio Configuration tools with expanded language support.

  • Improved audio workflow controls, including FFADO support and easier PipeWire tuning

  • New packages:

    • Loopino — A lightweight creative audio sampler with drag-and-drop sample loading, on-the-fly recording, a full ADSR envelope, filters, and effects. Available as a standalone application, CLAP plugin, and VST2 plugin, making it a flexible addition to any audio production workflow.

    • DistroAV — Formerly known as obs-ndi, DistroAV brings NDI (Network Audio/Video) support to OBS Studio, enabling high-quality, low-latency multi-track audio and video streaming over a local network. A natural fit for live streaming and networked A/V production setups. Not installed by default; install it by running sudo apt install distroav in a terminal.

    • snd-hdspe — An updated ALSA kernel driver for RME HDSPe PCIe sound cards (MADI, AES, RayDAT, AIO, and AIO Pro). This maintained fork of the original driver brings compatibility with newer kernels and expands hardware control through standard ALSA interfaces, giving professional RME users a reliable path forward. Not installed by default; if you have supported RME hardware, install it by running sudo apt install alsa-hdspe-dkms in a terminal.

    • Plasma PipeWire Settings — A KDE Plasma 6 panel widget for adjusting PipeWire quantum and sample rate on the fly, without touching configuration files. It is included by default and shown in the system tray by default, pairing with Ubuntu Studio Audio Configuration so the most common adjustments are always within reach.

    • Plasma Window Title Applet — A Plasma 6 panel applet that displays the active window title. Used in the macOS-like desktop layout to complete the global-menu experience.

Screenshot of a document scanning software interface showing options like scan resolution, mode, and source. The main area indicates 'This document contains no pages yet' with a prompt to click the Scan button to add one.
  • Notable package changes:

    • Skanpage replaces Skanlite for scanning, offering multi-page document scanning and straightforward saving to common formats.

    • rubberband-lv2 replaces rubberband-ladspa, providing high-quality time-stretching and pitch-shifting as an LV2 plugin aligned with the broader move away from LADSPA.

    • Minimal installation workflow with modular post-install creative tool selection

  • Quality-of-life polish across live session behavior, translations, and desktop consistency

Minimal Install: Your Studio, Your Way

Installation options for Ubuntu Studio, featuring a laptop illustration with two options: 'Ubuntu Studio Desktop (minimized)' and 'Ubuntu Studio Desktop.'

One topic we often see in community discussions is package “bloat”: some users want everything preinstalled, while others prefer to start lean and add tools only as needed.

Both approaches are fully supported.

If you want a lightweight starting point, choose the minimal install option during installation. This option has been available since 24.10. You will get the Ubuntu Studio desktop experience, theming, and core configuration, then add only the workflows you want using Ubuntu Studio Installer (audio, video, graphics, photography, and publishing).

If you want a complete creative workstation out of the box, the full install remains available.

You can also start from any official Ubuntu flavor and add Ubuntu Studio workflows without reinstalling.

Special Notes

The Ubuntu Studio 26.04 LTS disk image (ISO) exceeds 4 GB and cannot be reliably written to some file systems such as FAT32, and may not be readable when burned to a standard DVD.

We recommend using a compatible file system for downloads and creating a bootable USB stick.

Minimum installation media requirements:

  • Dual-Layer DVD or 8 GB USB drive

Release images are available here.

Featured Creative Apps

Ubuntu Studio 26.04 LTS ships with a strong cross-discipline toolkit for creators working in audio, video, graphics, and publishing.

Highlights include:

  • Blender 5.0.1
  • Kdenlive 25.12.3
  • Krita 6.0.1
  • GIMP 3.2.2
  • Ardour 9.0.0
  • OBS Studio 32.1.0

For the complete software version list and source package references, see the release notes.

Whether your work is audio engineering, filmmaking, digital painting, motion graphics, podcasting, or publishing, the full Ubuntu Studio stack is ready to support it.

Upgrade Notes

Upgrades from Ubuntu Studio 25.10 are expected to be enabled shortly after release. Upgrades from Ubuntu Studio 24.04 LTS are expected to be enabled with the release of 26.04.1 LTS in August 2026.

Detailed upgrade instructions are available in the release notes.

Known Issues

Ubuntu Studio shares KDE Plasma and core Ubuntu components with other Ubuntu flavors. Some known issues overlap with Kubuntu and Ubuntu:

Additionally, on first login for a newly created user, a reboot prompt for applying audio-production group configuration is expected behavior (tracked at Launchpad bug #2063899).

Thank You

Ubuntu Studio is built by a volunteer community of developers, testers, artists, translators, documenters, and users. Thank you to everyone who tested pre-releases, reported bugs, submitted improvements, and helped shape this LTS.

In Memory of Steve Langasek

We want to give special recognition to Steve Langasek, who passed away in January 2025.

Known to many as vorlon, Steve’s impact on Ubuntu, Debian, Ubuntu Studio, and the wider Linux community is difficult to overstate. His work, guidance, and support helped countless contributors and projects over many years.

In Ubuntu community tributes, he has been remembered as “a great mind, mentor and conscience.” If you have not read it yet, Remembering and thanking Steve Langasek is a powerful reflection on his legacy.

For this cycle in particular, Steve was responsible for the codename “Resolute Raccoon,” as noted during the community codename activity at Guess the release 26.04 – R. We are honored to carry that name in this release and dedicate this moment of thanks to his memory.

Contributors

Special thanks this cycle go to many familiar contributors from prior releases, including:

  • Eylul Dogruel: artwork and visual design
  • Ross Gammon: upstream Debian development and testing
  • Sebastien Ramacher: upstream Debian development
  • Dennis Braun: upstream Debian development
  • Rik Mills: Plasma and Kubuntu collaboration
  • Scarlett Moore: Plasma and Kubuntu collaboration
  • Aaron Rainbolt: Plasma and Kubuntu collaboration
  • Michael Mikowski: Plasma and Kubuntu collaboration
  • Len Ovens: testing and workflow insight, support and help
  • Mauro Gaspari: tutorials, promotion, and documentation
  • Utkarsh Gupta: Ubuntu Release Team support and collaboration
  • Florent “Skia” Jacquet: Ubuntu Release Team support and collaboration
  • Michael Hudson-Doyle: Ubuntu Release Team support and collaboration
  • Erich Eickmeyer: project leadership, packaging, and direction

And to everyone in the Ubuntu Studio community: thank you for your trust, your feedback, your patience, and your passion.

Support Ubuntu Studio

Ubuntu Studio is built by volunteers, but volunteer work still comes with real costs.

As outlined in Ubuntu Studio Needs Donations, the project is now covering additional monthly expenses due to a web hosting provider change. This release cycle also included a large amount of development work, including fixing long-standing bugs and rewriting both Ubuntu Studio Installer and Ubuntu Studio Audio Configuration from the ground up.

If Ubuntu Studio helps your creative work, your teaching, your studio, or your community, please consider supporting the project financially. Donations help keep the infrastructure running and make it easier to keep improving the tools, packaging, and user experience that go into each release.

You can support Ubuntu Studio here:

https://ubuntustudio.org/contribute/

Get Involved

Ubuntu Studio is a community project driven by volunteers. If you would like to contribute your time through packaging, documentation, testing, user support, or promotion, we would love your help:

https://ubuntustudio.org/contribute/

by eseickmeyer at April 23, 2026 05:23 PM

April 22, 2026

blog4

Notstandskomitee remixes AU2PILOT

Notstandskomitee made a remix for Aalborgs electronic act AU2PILOT, released on the album Fatamorgana - Remixed on the label NOIZ, available as download or CD-R.
https://autofilter.bandcamp.com/album/au2pilot-fatamorgana-remixed

by herrsteiner (noreply@blogger.com) at April 22, 2026 06:49 PM

April 20, 2026

Audio – Stefan Westerfeld's blog

New in liquidsfz-0.4.1

I didn’t have time yet to blog about liquidsfz-0.4.1, which was released two weeks ago, so here is a quick overview of the bigger changes.

The .sfz parser was made more robust, which means that broken .sfz files (there are some files out there which load fine in sforzando but have questionable syntax) can be loaded with a best-effort strategy. These files now produce warnings instead of an error.

Three different problems were fixed that could in some situations cause audible clicks, so updating from a previous version is recommended. A few smaller fixes (and two new opcodes) improve compatibility with more .sfz files. Finally, some improvements were made to the LV2 plugin.

by Stefan Westerfeld at April 20, 2026 10:30 AM

April 08, 2026

blog4

TMS concert 19.April Esbjerg (DK) Lydknust festival

The experimental electronic project TMS (Tina Mariane Krogh Madsen, Malte Steiner) will perform their piece Occurrences at Lydknust 26 festival in Esbjerg (DK) 19. April.
Occurrences debut was 2024 in Helsinki and for it TMS developed a cybernetic system which registers and processes their sonic inputs coming from metal percussion and tactile resonance via piezo-microphones. The computer responds to their playing and calculates control data, not only for internal sound synthesis but also for an external DIY modular synthesizer and real-time generated visuals.


by herrsteiner (noreply@blogger.com) at April 08, 2026 12:32 PM

April 07, 2026

GStreamer News

GStreamer 1.28.2 stable bug fix release

The GStreamer team is pleased to announce another bug fix release in the new stable 1.28 release series of your favourite cross-platform multimedia framework!

This release only contains bug fixes as well as a number of security fixes. It should be safe to update from 1.28.x, and we recommend you do so at your earliest convenience.

Highlighted bugfixes:

  • Various security fixes and playback fixes
  • audioencoder: allow change of channel configuration with avenc_aac
  • audioinvert: fix float format handling
  • h264parse, h265parse, baseparse: Preserve upstream buffer duration if possible
  • compositor: fix segfault with force-live=true and no sink pads (regression)
  • fallbacksrc: send select-streams event to collection source element directly
  • hlsdemux2: fix seekable range for live HLS streams
  • glupload: Fix linking glupload with restrictive caps filter
  • nvcodec: Add capability caching to speed up plugin initialization
  • RTP and RTCP packet handling fixes
  • RTSP server fixes for clean-up of timed out play requests
  • video-converter: fix I420/A420 BGRA/ARGB output on big-endian
  • qtdemux: fix invalid WebVTT timestamps, and other fixes
  • qmlgl6sink: Qt6GLVideoItem caps update handling fixes
  • threadshare udp sink and source fixes
  • transcriberbin and speechmatics text-to-speech fixes and improvements
  • videorate: Fix wrong caps in case of PTS going backward
  • vtdec: more Apple VideoToolbox decoder fixes
  • wavparse: Fix parsing of RF64 wave files
  • wasapi2sink: Ignore transient device errors from default device
  • waylandsink: various fixes and improvements
  • WebRTC DTLS robustness/stability improvements
  • Cerbero: Various inno Windows installer fixes and improvements; new 'gstreamer_bundle' wheels meta-package
  • Various bug fixes, build fixes, memory leak fixes, and other stability and reliability improvements

See the GStreamer 1.28.2 release notes for more details.

Binaries for Android, iOS, Mac OS X and Windows will be available shortly and will be published on the Downloads page.

April 07, 2026 11:00 PM

March 26, 2026

Testbit

Imagewmark 0.6.0 Release

What Is Imagewmark? How do you embed a secret message into an image that survives cropping, scaling, and compression without needing the original source to decode it? Imagewmark is a Free Software tool that does exactly this. It embeds encrypted invisible digital watermarks (128 bits) into images…

March 26, 2026 09:35 PM

March 25, 2026

Testbit

JJ-FZF 0.38.0 Release

What Is jj-fzf? The Jujutsu VCS has flexible expressions for specifying revision sets and allows non-linear editing of (ancestry) commits. jj-fzf is an interactive TUI that turns the jj log output into a fast keyboard driven control panel. Based on fzf, it allows live revset editing, instant diff…

March 25, 2026 02:39 AM

March 13, 2026

Audio – Stefan Westerfeld's blog

liquidsfz-0.4.0 released

The main goal of liquidsfz is to implement a library that supports playing .sfz files and is easy to integrate into other projects. We also provide a JACK client and a LV2 plugin.

A new version, liquidsfz-0.4.0 is now available.

The release adds support for parametric equalizers and some other new opcodes. It implements some extended CCs and generators (like sample=*sine), as well as parsing and loading programs from AriaBank .bank.xml files. A custom UI for the LV2 plugin was added to be able to select AriaBank programs in the LV2 plugin.

For a full list of changes, see the github release.

by Stefan Westerfeld at March 13, 2026 03:38 PM

February 24, 2026

Ardour 9.2 released

We released Ardour 9.2 today, a quick hotfix for a silly problem with ruler visibility. It also has a fix for an uncommon (we hope!) crash on Windows. The main release notes have been updated, and you can download at the usual place.

18 posts - 15 participants

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by Paul Davis at February 24, 2026 01:28 AM