Linux-audio-dev

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7534 discussions

[LAD] Not all XHCI (USB-Controllers) are made equal

by Florian Paul Schmidt

Hi! This mail is just a heads-up about a finding discovered with the help of the linux-usb mailing list and which I thought some other people might benefit from. If this is nothing new to you, then please do ignore it. Background: The USB audio class 2.0 specification dictates that isochronous transfers (i.e. audio frames to/from an audio interface) happen every "micro-frame". USB micro-frames are 125 microseconds (us) apart. 125 us = 0.125 milliseconds (ms). The majority of USB audio interfaces (at least those that I have) use synchronous audio-streaming, i.e. the sample clock is derived from the bus clock. There are definitely interfaces that use e.g. adaptive or asynchronous modes and this discussion would have to be altered for these. Given the case of synchronous mode isochronous transfers at a sampling rate of 48000 Hz (= 48 kHz) this would correspond to 6 audio frames per USB micro-frame. 48000 frames/second * 0.000125 seconds = 6 frames So in principle a very well behaved audio interface attached to a very well behaved USB controller sitting in a well tuned system _should_ be able to achieve a minimum round-trip latency of 2 * 6 frames = 12 frames or 250 us. This leaves out additional buffering inside the audio interface and additional latency by anti-aliasing and reconstruction filters. The first caveat to above in the context of Linux: The snd_usb_audio driver does not seem to support period sizes of just 6 frames. It _does support 12 frames though, which is nice. And here is the other caveat which lead to the title of this mail: Some controllers are behaving "worse" than others. There's this little thing in the XHCI spec which amounts to the following: The XHCI can specify in a register how many micro-frames have to buffered at all times for outgoing isochronous endpoints. The Intel XHCI in my ASRock N100dc-itx main-board for example request a whole USB frame (which corresponds to 8 micro-frames or 1 ms) to be buffered at all times. Another XHCI that I have (a Renesas controller) only requires one micro-frame. This has direct consequences on the kind of period sizes and number of periods that are usable on these controllers. These consequences don't explain everything but at least you know that you can't ever get better than this limit. For example for a period size of 48 frames I need to use 3 periods on the Intel controller (resulting in 3 ms round-trip latency), but for the Renesas I can use 2 periods at 48 frames (resulting in 2 ms round-trip latency). On the Renesas controller even 2 periods at 24 frames works fine (1 ms round-trip latency). I can lower the latency on the Intel controller by using a smaller period size but more of them as long as the buffering requirement of the controller is satisfied. One stable setting is for example a period size of 24 and 5 periods which results in a round-trip latency of 2.5 ms. So what's the take-away here? In some cases, if you are chasing stable low-latency operation using a USB audio class 2.0 device it might just be worth installing a different XHCI in your computer (the above mentioned Renesas controller is just a PCI-Express card which sits in a slot in my N100DC-itx board) that is better behaved than the one you currently have. Another take-away is that the above limitation only applies to the outgoing direction (playback). If all I was interested in would be the capture direction then 2 periods at 48 frames would work fine even on the Intel controller. Kind regards, FPS

1 year

[LAD] [ANN] Qtractor 1.5.2 - A New-Year'25 Release

by Rui Nuno Capela

Greetings, Qtractor 1.5.2 (new-year'25) released! Change-log: - Duplex MIDI Clock mode is not allowed anymore. - Immediate and consecutive plugin parameter changes are now merged into a single undo-able command, reflecting only the first value change in the series, dropping the previous old algorithm, which was dead wrong if not utterly defective. - Unique track names resolve to the first line only. - Help/Shortcuts... Search tool gets implemented; all changed MIDI controller shortcuts are reverted to their previous settings, when discarding or dismissing the dialog. - Fixed missing MIDI SPP in some cases. Description: Qtractor [1] is an audio/MIDI multi-track sequencer application written in C++ with the Qt framework [2]. Target platform is Linux, where the Jack Audio Connection Kit (JACK [3]) for audio and the Advanced Linux Sound Architecture (ALSA [4]) 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 https://qtractor.sourceforge.io http://qtractor.sourceforge.net Project page: https://sourceforge.net/projects/qtractor Downloads: https://sourceforge.net/projects/qtractor/files - source tarball: https://download.sf.net/qtractor/qtractor-1.5.2.tar.gz - source package (openSUSE Tubleweed): https://download.sf.net/qtractor/qtractor-1.5.2-9.1.rncbc.suse.src.rpm - binary package (openSUSE Tubleweed): https://download.sf.net/qtractor/qtractor-1.5.2-9.1.rncbc.suse.x86_64.rpm - AppImage [7] package: https://download.sf.net/qtractor/qtractor-1.5.2-9.1.x86_64.AppImage - Flatpak [8] package (thanks Hubert Figuière): https://flathub.org/apps/details/org.rncbc.qtractor 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/ - static rendering: https://qtractor.org/doc http://qtractor.sourceforge.net/doc https://qtractor.sourceforge.io/doc - user manual & how-to's: https://download.sf.net/qtractor/qtractor-manual-and-howtos.epub https://download.sf.net/qtractor/qtractor-manual-and-howtos.pdf License: Qtractor [1] is free, open-source Linux Audio [5] software, distributed under the terms of the GNU General Public License (GPL [6]) version 2 or later. References: [1] Qtractor - An audio/MIDI multi-track sequencer https://qtractor.org https://qtractor.sourceforge.io http://qtractor.sourceforge.net [2] Qt framework, C++ class library and tools for cross-platform application and UI development https://qt.io/ [3] JACK Audio Connection Kit https://jackaudio.org [4] ALSA, Advanced Linux Sound Architecture https://www.alsa-project.org/ [5] Linux Audio consortium of libre software for audio-related work https://linuxaudio.org [6] GPL - GNU General Public License https://www.gnu.org/copyleft/gpl.html [7] AppImage, Linux apps that run anywhere https://appimage.org/ [8] Flatpak, next-generation technology for building and distributing desktop applications on Linux https://flatpak.org/ See also: https://www.rncbc.org/drupal/node/2722 Enjoy! - - - rncbc aka Rui Nuno Capela

1 year

[LAD] [ANN] Vee One Suite 1.3.0 - A New-Year'25 Release

by Rui Nuno Capela

Greetings, The 'Vee One Suite', the 'gang-of-four' 'old-school' software instruments, * synthv1 [1] as a polyphonic subtractive synthesizer; * samplv1 [2] a polyphonic sampler synthesizer; * drumkv1 [3] as yet another drum-kit sampler; * padthv1 [4] a polyphonic additive synthesizer. Are here released for the New-Year'25 recycle... All still delivered in dual form: - a pure stand-alone JACK client with JACK-session [5], NSM (Non/New Session Management [6]) and both JACK MIDI and ALSA MIDI [7] input support; - a LV2 instrument plug-in [8]. Change-log: - Just another Vee-One's release for the New Year... - Last current element is now preserved and selected on preset and/or LV2 plug-in load (host permiting). (drumkv1 [3] only) - LV2 Plug-in: element parameters as legacy input control ports are not automatable nor addressable from the host anymore. (drumkv1 [3] only) - LV2 Plug-in: avoid making offset and loop range changes as regular parameter updates, which marked the host's state dirty (modified). (applies to samplv1 [2] and drumkv1 [3] only) The 'Vee One Suite' are free, open-source Linux Audio [10] software, distributed under the terms of the GNU General Public License (GPL) [11] version 2 or later. **synthv1 - an old-school polyphonic synthesizer [1] ** synthv1 1.3.0 (new-year'25) 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 - source tarball: https://download.sf.net/synthv1/synthv1-1.3.0.tar.gz - source package: https://download.sf.net/synthv1/synthv1-1.3.0-7.1.rncbc.suse.src.rpm - binary packages (openSUSE Tumbleweed): https://download.sf.net/synthv1/synthv1-jack-1.3.0-7.1.rncbc.suse.x86_84.rpm https://download.sf.net/synthv1/synthv1-lv2-1.3.0-7.1.rncbc.suse.x86_84.rpm - AppImage [9] package (JACK stand-alone only): https://download.sf.net/synthv1/synthv1-jack-1.3.0-7.1.x86_64.AppImage 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 [2]** samplv1 1.3.0 (new-year'25) 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 - source tarball: https://download.sf.net/samplv1/samplv1-1.3.0.tar.gz - source package: https://download.sf.net/samplv1/samplv1-1.3.0-7.1.rncbc.suse.src.rpm - binary package (openSUSE Tumbleweed): https://download.sf.net/samplv1/samplv1-jack-1.3.0-7.1.rncbc.suse.x86_84.rpm https://download.sf.net/samplv1/samplv1-lv2-1.3.0-7.1.rncbc.suse.x86_84.rpm - AppImage [9] package (JACK stand-alone only): https://download.sf.net/samplv1/samplv1-jack-1.3.0-7.1.x86_64.AppImage 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 [3]** drumkv1 1.3.0 (new-year'25) 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/samplv1 downloads: https://sourceforge.net/projects/drumkv1/files - source tarball: https://download.sf.net/drumkv1/drumkv1-1.3.0.tar.gz - source package: https://download.sf.net/drumkv1/drumkv1-1.3.0-7.1.rncbc.suse.src.rpm - binary package (openSUSE Tumbleweed): https://download.sf.net/drumkv1/drumkv1-jack-1.3.0-7.1.rncbc.suse.x86_84.rpm https://download.sf.net/drumkv1/drumkv1-lv2-1.3.0-7.1.rncbc.suse.x86_84.rpm - AppImage [9] package (JACK stand-alone only): https://download.sf.net/drumkv1/drumkv1-jack-1.3.0-7.1.x86_64.AppImage 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 [4]** padthv1 1.3.0 (new-year'25) 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: http://padthv1.sourceforge.net https://padthv1.sourceforge.io project page: https://sourceforge.net/projects/padthv1 downloads: https://sourceforge.net/projects/padthv1/files - source tarball: https://download.sf.net/padthv1/padthv1-1.3.0.tar.gz - source package: https://download.sf.net/padthv1/padthv1-1.3.0-7.1.rncbc.suse.src.rpm - binary package (openSUSE Tumbleweed): https://download.sf.net/padthv1/padthv1-jack-1.3.0-7.1.rncbc.suse.x86_84.rpm https://download.sf.net/padthv1/padthv1-lv2-1.3.0-7.1.rncbc.suse.x86_84.rpm - AppImage [9] package (JACK stand-alone only): https://download.sf.net/padthv1/padthv1-jack-1.3.0-7.1.x86_64.AppImage 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 References: [1] synthv1 - an old-school polyphonic synthesizer https://synthv1.sourceforge.io http://synthv1.sourceforge.net [2] samplv1 - an old-school polyphonic sampler https://samplv1.sourceforge.io http://samplv1.sourceforge.net [3] drumkv1 - an old-school drum-kit sampler https://drumkv1.sourceforge.io http://drumkv1.sourceforge.net [4] padthv1 - an old-school polyphonic additive synthesizer https://padthv1.sourceforge.io http://padthv1.sourceforge.net [5] JACK Audio Connection Kit https://jackaudio.org/ [6] NSM, Non Session Management (legacy) http://non.tuxfamily.org/nsm/ New Session Manager https://new-session-manager.jackaudio.org/ [7] ALSA, Advanced Linux Sound Architecture https://www.alsa-project.org/ [8] LV2, Audio Plugin Standard, the extensible successor of LADSPA https://lv2plug.in/ [9] AppImage, Linux apps that run anywhere https://appimage.org/ [10] Linux Audio consortium of libre software for audio-related work https://linuxaudio.org [11] GNU General Public License https://www.gnu.org/copyleft/gpl.html See also: https://www.rncbc.org/drupal/node/2721 Enjoy. - - - rncbc aka. Rui Nuno Capela

1 year

[LAD] [ANN] Qtractor 1.5.1 - An(other) End-of-Year'24 Release

by Rui Nuno Capela

Hi again, Qtractor 1.5.1 (end-of-year'24) is out! Change-log: - Fixed/corrected and awfully bad MIDI metronome and clock timing, a reminiscence from the higher resolution MIDI queuing (in place since v0.9.30, meaning a two year long disgrace :(). Description: Qtractor [1] is an audio/MIDI multi-track sequencer application written in C++ with the Qt framework [2]. Target platform is Linux, where the Jack Audio Connection Kit (JACK [3]) for audio and the Advanced Linux Sound Architecture (ALSA [4]) 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 https://qtractor.sourceforge.io http://qtractor.sourceforge.net Project page: https://sourceforge.net/projects/qtractor Downloads: https://sourceforge.net/projects/qtractor/files - source tarball: https://download.sf.net/qtractor/qtractor-1.5.1.tar.gz - source package (openSUSE Tubleweed): https://download.sf.net/qtractor/qtractor-1.5.1-8.1.rncbc.suse.src.rpm - binary package (openSUSE Tubleweed): https://download.sf.net/qtractor/qtractor-1.5.1-8.1.rncbc.suse.x86_64.rpm - AppImage [7] package: https://download.sf.net/qtractor/qtractor-1.5.1-8.1.x86_64.AppImage - Flatpak [8] package (thanks Hubert Figuière): https://flathub.org/apps/details/org.rncbc.qtractor 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/ - static rendering: https://qtractor.org/doc http://qtractor.sourceforge.net/doc https://qtractor.sourceforge.io/doc - user manual & how-to's: https://download.sf.net/qtractor/qtractor-manual-and-howtos.epub https://download.sf.net/qtractor/qtractor-manual-and-howtos.pdf License: Qtractor [1] is free, open-source Linux Audio [5] software, distributed under the terms of the GNU General Public License (GPL [6]) version 2 or later. References: [1] Qtractor - An audio/MIDI multi-track sequencer https://qtractor.org https://qtractor.sourceforge.io http://qtractor.sourceforge.net [2] Qt framework, C++ class library and tools for cross-platform application and UI development https://qt.io/ [3] JACK Audio Connection Kit https://jackaudio.org [4] ALSA, Advanced Linux Sound Architecture https://www.alsa-project.org/ [5] Linux Audio consortium of libre software for audio-related work https://linuxaudio.org [6] GPL - GNU General Public License https://www.gnu.org/copyleft/gpl.html [7] AppImage, Linux apps that run anywhere https://appimage.org/ [8] Flatpak, next-generation technology for building and distributing desktop applications on Linux https://flatpak.org/ See also: https://www.rncbc.org/drupal/node/2713 Cheers && Happy NYE! - - - rncbc aka Rui Nuno Capela

1 year, 1 month

[LAD] Ratatouille.lv2 v0.9.4 released

by Hermann Meyer

Ratatouille is a Neural Model loader and mixer for Linux/Windows. ![Ratatouille](https://github.com/brummer10/Ratatouille.lv2/blob/main/Ratatouille.png?raw=true) This release introduce a normalization option for NAM models and fix a issue with the normalization (a.k.a loudness compensation) of IR Files (thanks to @avanzzzi ) Ratatouille allow to load up to two neural model files and mix there output. Those models could be [*.nam files](https://tonehunt.org/all) or [*.json or .aidax files](https://cloud.aida-x.cc/all). So you could blend from clean to crunch for example, or, go wild and mix different amp models, or mix a amp with a pedal simulation. Ratatouille using parallel processing to process the second neural model and the second IR-File to reduce the dsp load. The "Delay" control could add a small delay to the second model to overcome phasing issues, or to add some color/reverb to the sound. To round up the sound it allow to load up to two Impulse Response files and mix there output as well. You could try the wildest combinations, or, be conservative and load just your single preferred IR-File. Each neural model may have a different expected Sample Rate, Ratatouille will resample the buffer to match that. Impulse Response Files will be resampled on the fly to match the session Sample Rate. Project Page: https://github.com/brummer10/Ratatouille.lv2 Release Page: https://github.com/brummer10/Ratatouille.lv2

1 year, 1 month

[LAD] [ANN] Qtractor 1.5.0 - An End-of-Year'24 Release

by Rui Nuno Capela

Hi all, Qtractor 1.5.0 (end-of-year'24) is released! Change-log: - Clip/Cross Fade may now apply to all (multiple) selected clips. - Fixed the status-bar session and MIDI clip length BBT format, when in presence of multiple tempo or time-signature changes. - Introducing MIDI clip editor (aka. piano-roll) new Transport/Step/Note/Backward and Forward menu actions, to move the play-head to previous and next note events, respectively. - MIDI clip editor (aka. piano-roll) menu Edit/Select Mode/Edit On, Off and Draw actions are now self-toggled when triggered. - Plug-in presets menu: now sorted alphabetically. - When summoned from the menu, the View/Tempo Map-Markers... dialog positions itself to the current play-head location, instead of the absolute beginning of the timeline. - Introducing new application custom theming option: View/Options.../Display/Options/Custom/Icons theme (directory or folder). - After a shameful long time, adding a brand new audio clip via the Clip/New... dialog, is now finally fixed and functional. - Mixer: reduced track names up to first line break. - Double-click on slider for default value, replicating the behavior of middle-click. - Fxed bug: Aux Send loses state when reordered in a strip. - Create/Add new bus below that which is used as source in View/Buses dialog. - Mitigate truncated bus names in Aux Send Bus dialog. - Fixed yet another old bug regarding the flush of all pending MIDI Note-Off events when playback stops, shuts-off or panics, especially relevant when playback is resumed anywhere but the absolute beginning of the timeline (and also after a first loop turn around). - Schedule an actual and complete refresh on main View/Refresh..., especially when changing a custom color theme palette on-the-fly. Description: Qtractor [1] is an audio/MIDI multi-track sequencer application written in C++ with the Qt framework [2]. Target platform is Linux, where the Jack Audio Connection Kit (JACK [3]) for audio and the Advanced Linux Sound Architecture (ALSA [4]) 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 https://qtractor.sourceforge.io http://qtractor.sourceforge.net Project page: https://sourceforge.net/projects/qtractor Downloads: https://sourceforge.net/projects/qtractor/files - source tarball: https://download.sf.net/qtractor/qtractor-1.5.0.tar.gz - source package (openSUSE Tubleweed): https://download.sf.net/qtractor/qtractor-1.5.0-7.1.rncbc.suse.src.rpm - binary package (openSUSE Tubleweed): https://download.sf.net/qtractor/qtractor-1.5.0-7.1.rncbc.suse.x86_64.rpm - AppImage [7] package: https://download.sf.net/qtractor/qtractor-1.5.0-7.1.x86_64.AppImage - Flatpak [8] package (thanks Hubert Figuière): https://flathub.org/apps/details/org.rncbc.qtractor 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/ - static rendering: https://qtractor.org/doc http://qtractor.sourceforge.net/doc https://qtractor.sourceforge.io/doc - user manual & how-to's: https://download.sf.net/qtractor/qtractor-manual-and-howtos.epub https://download.sf.net/qtractor/qtractor-manual-and-howtos.pdf License: Qtractor [1] is free, open-source Linux Audio [5] software, distributed under the terms of the GNU General Public License (GPL [6]) version 2 or later. References: [1] Qtractor - An audio/MIDI multi-track sequencer https://qtractor.org https://qtractor.sourceforge.io http://qtractor.sourceforge.net [2] Qt framework, C++ class library and tools for cross-platform application and UI development https://qt.io/ [3] JACK Audio Connection Kit https://jackaudio.org [4] ALSA, Advanced Linux Sound Architecture https://www.alsa-project.org/ [5] Linux Audio consortium of libre software for audio-related work https://linuxaudio.org [6] GPL - GNU General Public License https://www.gnu.org/copyleft/gpl.html [7] AppImage, Linux apps that run anywhere https://appimage.org/ [8] Flatpak, next-generation technology for building and distributing desktop applications on Linux https://flatpak.org/ See also: https://www.rncbc.org/drupal/node/2706 Cheers && Keep the fun! - - - rncbc aka Rui Nuno Capela

1 year, 1 month

[LAD] [ANN] Vee One Suite 1.2.0 - An End-of-Year'24 Release

by Rui Nuno Capela

Greetings, The 'Vee One Suite', the so called 'gang-of-four' 'old-school' software instruments, * synthv1 [1] as a polyphonic subtractive synthesizer; * samplv1 [2] a polyphonic sampler synthesizer; * drumkv1 [3] as yet another drum-kit sampler; * padthv1 [4] a polyphonic additive synthesizer. Are here being released for the End-of-Year'24 holidays... All still delivered in dual form: - a pure stand-alone JACK client with JACK-session [5], NSM (Non/New Session Management [6]) and both JACK MIDI and ALSA MIDI [7] input support; - a LV2 instrument plug-in [8]. Change-log: - Configure/Tuning: fixed initial scale and keyboard map tooltips. The 'Vee One Suite' are free, open-source Linux Audio [10] software, distributed under the terms of the GNU General Public License (GPL) [11] version 2 or later. **synthv1 - an old-school polyphonic synthesizer [1] ** synthv1 1.2.0 (end-of-year'24) 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 - source tarball: https://download.sf.net/synthv1/synthv1-1.2.0.tar.gz - source package: https://download.sf.net/synthv1/synthv1-1.2.0-6.1.rncbc.suse.src.rpm - binary packages (openSUSE Tumbleweed): https://download.sf.net/synthv1/synthv1-jack-1.2.0-6.1.rncbc.suse.x86_84.rpm https://download.sf.net/synthv1/synthv1-lv2-1.2.0-6.1.rncbc.suse.x86_84.rpm - AppImage [9] package (JACK stand-alone only): https://download.sf.net/synthv1/synthv1-jack-1.2.0-6.1.x86_64.AppImage 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 [2]** samplv1 1.2.0 (end-of-year'24) 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 - source tarball: https://download.sf.net/samplv1/samplv1-1.2.0.tar.gz - source package: https://download.sf.net/samplv1/samplv1-1.2.0-6.1.rncbc.suse.src.rpm - binary package (openSUSE Tumbleweed): https://download.sf.net/samplv1/samplv1-jack-1.2.0-6.1.rncbc.suse.x86_84.rpm https://download.sf.net/samplv1/samplv1-lv2-1.2.0-6.1.rncbc.suse.x86_84.rpm - AppImage [9] package (JACK stand-alone only): https://download.sf.net/samplv1/samplv1-jack-1.2.0-6.1.x86_64.AppImage 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 [3]** drumkv1 1.2.0 (end-of-year'24) 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/samplv1 downloads: https://sourceforge.net/projects/drumkv1/files - source tarball: https://download.sf.net/drumkv1/drumkv1-1.2.0.tar.gz - source package: https://download.sf.net/drumkv1/drumkv1-1.2.0-6.1.rncbc.suse.src.rpm - binary package (openSUSE Tumbleweed): https://download.sf.net/drumkv1/drumkv1-jack-1.2.0-6.1.rncbc.suse.x86_84.rpm https://download.sf.net/drumkv1/drumkv1-lv2-1.2.0-6.1.rncbc.suse.x86_84.rpm - AppImage [9] package (JACK stand-alone only): https://download.sf.net/drumkv1/drumkv1-jack-1.2.0-6.1.x86_64.AppImage 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 [4]** padthv1 1.2.0 (end-of-year'24) 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: http://padthv1.sourceforge.net https://padthv1.sourceforge.io project page: https://sourceforge.net/projects/padthv1 downloads: https://sourceforge.net/projects/padthv1/files - source tarball: https://download.sf.net/padthv1/padthv1-1.2.0.tar.gz - source package: https://download.sf.net/padthv1/padthv1-1.2.0-6.1.rncbc.suse.src.rpm - binary package (openSUSE Tumbleweed): https://download.sf.net/padthv1/padthv1-jack-1.2.0-6.1.rncbc.suse.x86_84.rpm https://download.sf.net/padthv1/padthv1-lv2-1.2.0-6.1.rncbc.suse.x86_84.rpm - AppImage [9] package (JACK stand-alone only): https://download.sf.net/padthv1/padthv1-jack-1.2.0-6.1.x86_64.AppImage 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 References: [1] synthv1 - an old-school polyphonic synthesizer https://synthv1.sourceforge.io http://synthv1.sourceforge.net [2] samplv1 - an old-school polyphonic sampler https://samplv1.sourceforge.io http://samplv1.sourceforge.net [3] drumkv1 - an old-school drum-kit sampler https://drumkv1.sourceforge.io http://drumkv1.sourceforge.net [4] padthv1 - an old-school polyphonic additive synthesizer https://padthv1.sourceforge.io http://padthv1.sourceforge.net [5] JACK Audio Connection Kit https://jackaudio.org/ [6] NSM, Non Session Management (legacy) http://non.tuxfamily.org/nsm/ New Session Manager https://new-session-manager.jackaudio.org/ [7] ALSA, Advanced Linux Sound Architecture https://www.alsa-project.org/ [8] LV2, Audio Plugin Standard, the extensible successor of LADSPA https://lv2plug.in/ [9] AppImage, Linux apps that run anywhere https://appimage.org/ [10] Linux Audio consortium of libre software for audio-related work https://linuxaudio.org [11] GNU General Public License https://www.gnu.org/copyleft/gpl.html See also: https://www.rncbc.org/drupal/node/2705 Rejoyce! - - - rncbc aka. Rui Nuno Capela

1 year, 1 month

[LAD] Python audio-metronome + MIDI question

by Jeanette C.

Hey hey, I'm working on some Python code. The idea is to have a kind of MIDI sequencer with a built-in metronome that plays the clicks using simple .wav files. Here's the code, my question follows: https://www.dropbox.com/scl/fi/5t2z0qtpj3ejyhevqdy9s/clock_test.zip?rlkey=w… Currently, I am using pygame.mixer.Sound to play the .wav files, but compared to the MIDI messages sent, the clicks lag. I tried lowering the buffer size, as you can see in the Metronome class on line 110: pygame.mixer.init(buffer=32) No good. Is there a better, hopefully simple, way to play these clicks? On my system I'm running jackd with a samplerate of 48kHz and -n 3 -p 256 This usually serves me well in recording audio and MIDI. If someone could make suggestions, I'd appreciate it very much. Best wishes, Jeanette -- * Website: http://juliencoder.de - for summer is a state of sound * Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g * Audiobombs: https://www.audiobombs.com/users/jeanette_c * GitHub: https://github.com/jeanette-c What's practical is logical. What the hell, who cares? All I know is I'm so happy when you're dancing there. <3 (Britney Spears)

1 year, 1 month

[LAD] [ANN] Qtractor 1.4.0 - A Halloween'24 Release

by Rui Nuno Capela

Hello again, Qtractor 1.4.0 (halloween'24) is out! Change-log: - Improved color contrast on track and clip title labels, when given track foreground and background colors are too similar in lightness. - Clip/Split now also applies to multiple selected clips, on any other track than current, if the split point (play-head) is found within. - Clip Merge/Export... audio clips now taking the internal audio resolution (ie. 64 frames/period), independent to former JACK/Pipewire buffer-size/period. - New Clip Mute state property introduced. - New MIDI clip tool option: Normalize / Compress. - Prepping up next development cycle (Qt >= 6.8) Description: Qtractor [1] is an audio/MIDI multi-track sequencer application written in C++ with the Qt framework [2]. Target platform is Linux, where the Jack Audio Connection Kit (JACK [3]) for audio and the Advanced Linux Sound Architecture (ALSA [4]) 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 https://qtractor.sourceforge.io http://qtractor.sourceforge.net Project page: https://sourceforge.net/projects/qtractor Downloads: https://sourceforge.net/projects/qtractor/files - source tarball: https://download.sf.net/qtractor/qtractor-1.4.0.tar.gz - source package (openSUSE Tubleweed): https://download.sf.net/qtractor/qtractor-1.4.0-6.1.rncbc.suse.src.rpm - binary package (openSUSE Tubleweed): https://download.sf.net/qtractor/qtractor-1.4.0-6.1.rncbc.suse.x86_64.rpm - AppImage [7] package: https://download.sf.net/qtractor/qtractor-1.4.0-6.1.x86_64.AppImage - Flatpak [8] package (thanks Hubert Figuière): https://flathub.org/apps/details/org.rncbc.qtractor 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/ - static rendering: https://qtractor.org/doc http://qtractor.sourceforge.net/doc https://qtractor.sourceforge.io/doc - user manual & how-to's: https://download.sf.net/qtractor/qtractor-manual-and-howtos.epub https://download.sf.net/qtractor/qtractor-manual-and-howtos.pdf License: Qtractor [1] is free, open-source Linux Audio [5] software, distributed under the terms of the GNU General Public License (GPL [6]) version 2 or later. References: [1] Qtractor - An audio/MIDI multi-track sequencer https://qtractor.org https://qtractor.sourceforge.io http://qtractor.sourceforge.net [2] Qt framework, C++ class library and tools for cross-platform application and UI development https://qt.io/ [3] JACK Audio Connection Kit https://jackaudio.org [4] ALSA, Advanced Linux Sound Architecture https://www.alsa-project.org/ [5] Linux Audio consortium of libre software for audio-related work https://linuxaudio.org [6] GPL - GNU General Public License https://www.gnu.org/copyleft/gpl.html [7] AppImage, Linux apps that run anywhere https://appimage.org/ [8] Flatpak, next-generation technology for building and distributing desktop applications on Linux https://flatpak.org/ See also: https://www.rncbc.org/drupal/node/2685 Cheers && Keep having (lotsa) fun! - - - rncbc aka Rui Nuno Capela

1 year, 3 months

[LAD] Vee One Suite 1.1.3 - A Halloween'24 Release

by Rui Nuno Capela

Greetings (from the crypt), The 'Vee One Suite', the so called 'gang-of-four' 'old-school' software instruments, * synthv1 [1] as a polyphonic subtractive synthesizer; * samplv1 [2] a polyphonic sampler synthesizer; * drumkv1 [3] as yet another drum-kit sampler; * padthv1 [4] a polyphonic additive synthesizer. Are here released for the spooky Halloween'24 evening... All creepy delivered in dual form: - a pure stand-alone JACK client with JACK-session [5], NSM (Non/New Session Management [6]) and both JACK MIDI and ALSA MIDI [7] input support; - a LV2 instrument plug-in [8]. Change-log: - Prepping up next development cycle (Qt >= 6.8) The 'Vee One Suite' are free, open-source Linux Audio [10] software, distributed under the terms of the GNU General Public License (GPL) [11] version 2 or later. **synthv1 - an old-school polyphonic synthesizer [1] ** synthv1 1.1.3 (halloween'24) is out! 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 - source tarball: https://download.sf.net/synthv1/synthv1-1.1.3.tar.gz - source package: https://download.sf.net/synthv1/synthv1-1.1.3-5.1.rncbc.suse.src.rpm - binary packages (openSUSE Tumbleweed): https://download.sf.net/synthv1/synthv1-jack-1.1.3-5.1.rncbc.suse.x86_84.rpm https://download.sf.net/synthv1/synthv1-lv2-1.1.3-5.1.rncbc.suse.x86_84.rpm - AppImage [9] package (JACK stand-alone only): https://download.sf.net/synthv1/synthv1-jack-1.1.3-5.1.x86_64.AppImage 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 [2]** samplv1 1.1.3 (halloween'24) is out! 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 - source tarball: https://download.sf.net/samplv1/samplv1-1.1.3.tar.gz - source package: https://download.sf.net/samplv1/samplv1-1.1.3-5.1.rncbc.suse.src.rpm - binary package (openSUSE Tumbleweed): https://download.sf.net/samplv1/samplv1-jack-1.1.3-5.1.rncbc.suse.x86_84.rpm https://download.sf.net/samplv1/samplv1-lv2-1.1.3-5.1.rncbc.suse.x86_84.rpm - AppImage [9] package (JACK stand-alone only): https://download.sf.net/samplv1/samplv1-jack-1.1.3-5.1.x86_64.AppImage 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 [3]** drumkv1 1.1.3 (halloween'24) is out! 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/samplv1 downloads: https://sourceforge.net/projects/drumkv1/files - source tarball: https://download.sf.net/drumkv1/drumkv1-1.1.3.tar.gz - source package: https://download.sf.net/drumkv1/drumkv1-1.1.3-5.1.rncbc.suse.src.rpm - binary package (openSUSE Tumbleweed): https://download.sf.net/drumkv1/drumkv1-jack-1.1.3-5.1.rncbc.suse.x86_84.rpm https://download.sf.net/drumkv1/drumkv1-lv2-1.1.3-5.1.rncbc.suse.x86_84.rpm - AppImage [9] package (JACK stand-alone only): https://download.sf.net/drumkv1/drumkv1-jack-1.1.3-5.1.x86_64.AppImage 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 [4]** padthv1 1.1.3 (halloween'24) is out! 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: http://padthv1.sourceforge.net https://padthv1.sourceforge.io project page: https://sourceforge.net/projects/padthv1 downloads: https://sourceforge.net/projects/padthv1/files - source tarball: https://download.sf.net/padthv1/padthv1-1.1.3.tar.gz - source package: https://download.sf.net/padthv1/padthv1-1.1.3-5.1.rncbc.suse.src.rpm - binary package (openSUSE Tumbleweed): https://download.sf.net/padthv1/padthv1-jack-1.1.3-5.1.rncbc.suse.x86_84.rpm https://download.sf.net/padthv1/padthv1-lv2-1.1.3-5.1.rncbc.suse.x86_84.rpm - AppImage [9] package (JACK stand-alone only): https://download.sf.net/padthv1/padthv1-jack-1.1.3-5.1.x86_64.AppImage 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 References: [1] synthv1 - an old-school polyphonic synthesizer https://synthv1.sourceforge.io http://synthv1.sourceforge.net [2] samplv1 - an old-school polyphonic sampler https://samplv1.sourceforge.io http://samplv1.sourceforge.net [3] drumkv1 - an old-school drum-kit sampler https://drumkv1.sourceforge.io http://drumkv1.sourceforge.net [4] padthv1 - an old-school polyphonic additive synthesizer https://padthv1.sourceforge.io http://padthv1.sourceforge.net [5] JACK Audio Connection Kit https://jackaudio.org/ [6] NSM, Non Session Management (legacy) http://non.tuxfamily.org/nsm/ New Session Manager https://new-session-manager.jackaudio.org/ [7] ALSA, Advanced Linux Sound Architecture https://www.alsa-project.org/ [8] LV2, Audio Plugin Standard, the extensible successor of LADSPA https://lv2plug.in/ [9] AppImage, Linux apps that run anywhere https://appimage.org/ [10] Linux Audio consortium of libre software for audio-related work https://linuxaudio.org [11] GNU General Public License https://www.gnu.org/copyleft/gpl.html See also: https://www.rncbc.org/drupal/node/2684 Enjoy the treats! - - - rncbc aka. Rui Nuno Capela

1 year, 3 months

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