Linux-audio-dev

linux-audio-dev@lists.linuxaudio.org

10 participants
7399 discussions

by Fons Adriaensen

Hello all, Several people have asked how the pitch estimation in zita-at1 works. The basic method is to look at the autocorrelation of the signal. This is a measure of how similar a signal is to a time-shifted version of itself. It can be computed efficiently as the inverse FFT of the power spectrum. In many cases the strongest autocorrelation peak corresponds to the fundamental period. But this can easily get ambiguous as there will also be peaks at integer multiples of that period, and for strong harmonics. To avoid errors it is necessary to look also at the signal spectrum and level, and combine all that info in some way. How exactly is mostly a matter of trial and error. Which is why I need more examples. Have a look at <http://kokkinizita.linuxaudio.org/linuxaudio/pitchdet1.png> This a test of the pitch detection algorithm used in zita-at1. The X-axis is time in seconds, a new pitch estimate is made every 10.667 ms (512 samples at 48 kHz). Vertically we have autocorrelation, the Y-axis is in samples. Red is positive, blue negative. The green dots are the detected pitch period, zero means unvoiced. The blue line on top is signal level in dB. Note how this singer has a habit of letting the pitch 'droop', by up to an octave, at the end of a note. He is probably not aware of it. This happens at 28.7s, again at 30.8s, and in fact during the entire track. What should an autotuner do with this ? Turn the glide into a chromatic scale ? The real solution here would be to edit the recording, adding a fast fadeout just before the 'droop'. Even a minimal amount of reverb will hide this. The fragment from 29.7 to 30.3s is an example of a vowel with very strong harmonics which show up as the red bands below the real pitch period. In this case the 2nd and 3rd harmonic were actually about 20 dB stronger than the fundamental. This is resolved because the autocorrelation is still strongest at the fundamental pitch. The very last estimate in the next fragment (at 30.85s) is an example of where this goes wrong, the algorithm selects twice the real pitch period, assuming the first autocorrelation peak is the 2nd harmonic. This happens because there was significant energy at the subharmonic, actually leakage from another track via the headphone used by singer. The false 'voiced' detection at 30.39s is also the result of a signal leaking via the headphone. Ciao, -- FA

14 hours, 49 minutes

vocal tracks wanted

by Fons Adriaensen

Hello all, I'm working on an improved version if zita-at1 which most of you probably know as the x42-autotune plugin. The update, zita-at2, will preserve formants while retuning. To test and develop this I need some clean vocal tracks, in particular of female singers and also very low (bass) males. So if you have these available, I'd be very happy if you can share them. They won't be used of course for any other purpose than to improve the retuner algorithm. TIA for anything you can provide ! -- FA

1 day, 23 hours

Update of zita-at1

by Fons Adriaensen

Hello all, Zita-at1-0.8.1 is now available at the usual place: <http://kokkinizita.linuxaudio.org/linuxaudio/downloads/index.html> Note: this is not (yet) the new zita-at2 that will have formant correction. Changes: - Bug fixes. - Improved pitch estimation algorithm. - Low latency mode, reduces latency to around 10 ms. Note to Robin Gareus: The new Retuner class can probably be used without changes in the x42-autotuner plugin. The logic that controls jumping forward/back while resampling has been changed. Instead of just trying to avoid reading outside the available input range, it now tries to keep the read index as close as possible to the ideal position, i.e. 'latency' samples behind the write index. That also means that for unvoiced input it will be within +/- 1.3 ms of the ideal position, so nothing special is required for this case. Ciao, -- FA

2 days, 7 hours

Help with resampling algorithm

by Marco Castorina

Hi everyone, I am hoping this is the right place to post this question. I am trying to implement the resampling algorithm as described in this paper: https://ccrma.stanford.edu/~jos/resample/resample.pdf I managed to construct the h (windowed sinc) table, and I have implemented the loop. I am having a hard time to compute the eta interpolation factor and the l index index for the h table. The "fixed point" implementation of the paper is a bit confusing to me. Looking at figure 7 in the paper, I think the interpolation factor needs to be computed between the h entries instead of between the original samples. However I don't understand how to compute the starting point (h(l)). I have just started working with audio code, so I might be misunderstanding something fundamental about the paper. I have coded a prototype which is shared here: https://gist.github.com/theWatchmen/746f35c349748525b412cfd9466608ce Apologies in advance if this is not the right forum. Marco

3 days, 21 hours

Ratatouille.lv2 v0.1 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) 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. 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. On the Release Page been ready to use binaries, note please that Ratatouille.lv2-v3-v0.1-linux-x86_64.tar.xz is a fully optimized version using the x86-64-v3 optimisation, you could check if your system supports that by running the command `/usr/lib64/ld-linux-x86-64.so.2 --help 2>/dev/null | grep 'x86-64-v3 (supported'` if that return nothing, your system can't use this, in that case you should choose Ratatouille.lv2-v0.1-linux-x86_64.tar.xz To build from source, please use Ratatouille.lv2-v0.1-src.tar.xz as only that contain the needed submodules. Release Page: https://github.com/brummer10/Ratatouille.lv2/releases/tag/v0.1 Project Page: https://github.com/brummer10/Ratatouille.lv2

5 days, 23 hours

[ANN] Vee One Suite 0.9.90 - A Spring'24 Release Candidate batch #2

by Rui Nuno Capela

Hi, once again, The 'Vee One Suite' of so called '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 for the (northern) Spring'24 release candidate, in a so called QStuff* second batch of the blooming season... All still delivered in dual form, as usual: - 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 the unthinkable (aka. v1.0.0-rc1) - Custom color themes are now file based (*.conf); legacy still preserved ntl. - Fixed the build checks on whether to use old or newer style of LV2 include headers. 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 0.9.90 (spring'24 aka. v1.0.0-rc1) 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/synthv1-0.9.90.tar.gz - source package: https://download.sf.net/synthv1/synthv1-0.9.90-1.1.rncbc.suse.src.rpm - binary packages (openSUSE Tumbleweed): https://download.sf.net/synthv1/synthv1-jack-0.9.90-1.1.rncbc.suse.x86_84.r… https://download.sf.net/synthv1/synthv1-lv2-0.9.90-1.1.rncbc.suse.x86_84.rpm - AppImage [9] package (JACK stand-alone only): https://download.sf.net/synthv1/synthv1-jack-0.9.90-1.1.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 0.9.90 (spring'24 aka. v1.0.0-rc1) 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/samplv1-0.9.90.tar.gz - source package: https://download.sf.net/samplv1/samplv1-0.9.90-1.1.rncbc.suse.src.rpm - binary package (openSUSE Tumbleweed): https://download.sf.net/samplv1/samplv1-jack-0.9.90-1.1.rncbc.suse.x86_84.r… https://download.sf.net/samplv1/samplv1-lv2-0.9.90-1.1.rncbc.suse.x86_84.rpm - AppImage [9] package (JACK stand-alone only): https://download.sf.net/samplv1/samplv1-jack-0.9.90-1.1.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 0.9.90 (spring'24 aka. v1.0.0-rc1) 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/drumkv1-0.9.90.tar.gz - source package: https://download.sf.net/drumkv1/drumkv1-0.9.90-1.1.rncbc.suse.src.rpm - binary package (openSUSE Tumbleweed): https://download.sf.net/drumkv1/drumkv1-jack-0.9.90-1.1.rncbc.suse.x86_84.r… https://download.sf.net/drumkv1/drumkv1-lv2-0.9.90-1.1.rncbc.suse.x86_84.rpm - AppImage [9] package (JACK stand-alone only): https://download.sf.net/drumkv1/drumkv1-jack-0.9.90-1.1.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 0.9.90 (spring'24 aka. v1.0.0-rc1) 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/padthv1-0.9.90.tar.gz - source package: https://download.sf.net/padthv1/padthv1-0.9.90-1.1.rncbc.suse.src.rpm - binary package (openSUSE Tumbleweed): https://download.sf.net/padthv1/padthv1-jack-0.9.90-1.1.rncbc.suse.x86_84.r… https://download.sf.net/padthv1/padthv1-lv2-0.9.90-1.1.rncbc.suse.x86_84.rpm - AppImage [9] package (JACK stand-alone only): https://download.sf.net/padthv1/padthv1-jack-0.9.90-1.1.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/2585 Enjoy the blooming season, cheers! - - - rncbc aka. Rui Nuno Capela

2 weeks, 1 day

[ANN] The QStuff* Spring'24 Release Candidate batch #1

by Rui Nuno Capela

Hi there! The first batch of the 'QStuff*': QjackCtl [1], Qsynth [2], Qsampler [3], QXGEdit [4], QmidiCtl [5] and QmidiNet [6], are here released for the (northern) Spring'24 season. Enjoy the blooming season... ** QjackCtl - JACK Audio Connection Kit Qt GUI Interface [1] ** QjackCtl 0.9.90 (spring'24 aka. v1.0.0-rc1) is released! QjackCtl is an aged yet modern, not so 'simple' anymore, Qt [7] application to control the JACK [8] sound server, for the Linux Audio [12] infrastructure. Change-log: - Prepping the unthinkable (aka. v1.0.0-rc1) - Custom color themes are now file based (*.conf); legacy still preserved ntl. - Old generic "Portuguese" translation (pt) has been corrected to the more proper "Portuguese (Brazil)" locale (pt_BR). - Simplified and shortened the main window title. Website: https://qjackctl.sourceforge.io http://qjackctl.sourceforge.net Project page: https://sourceforge.net/projects/qjackctl Downloads: https://sourceforge.net/projects/qjackctl/files - source tarball: https://download.sf.net/qjackctl/qjackctl-0.9.90.tar.gz - source package: https://download.sf.net/qjackctl/qjackctl-0.9.90-1.1.rncbc.suse.src.rpm - binary packages: https://download.sf.net/qjackctl/qjackctl-0.9.90-1.1.rncbc.suse.x86_64.rpm - AppImage [20] package: https://download.sf.net/qjackctl/qjackctl-0.9.90-1.1.x86_64.AppImage Git repos: https://git.code.sf.net/p/qjackctl/code https://github.com/rncbc/qjackctl.git https://gitlab.com/rncbc/qjackctl.git https://codeberg.com/rncbc/qjackctl.git ** Qsynth - A FluidSynth Qt GUI Interface [2] ** Qsynth 0.9.90 (spring'24 aka. v1.0.0-rc1) is released! Qsynth is a FluidSynth [10] GUI front-end application written in C++ around the Qt framework [7] using Qt Designer. Change-log: - Prepping the unthinkable (aka. v1.0.0-rc1) - Custom color themes are now file based (*.conf); legacy still preserved ntl. Website: https://qsynth.sourceforge.io http://qsynth.sourceforge.net Project page: https://sourceforge.net/projects/qsynth Downloads: https://sourceforge.net/projects/qsynth/files - source tarball: https://download.sf.net/qsynth/qsynth-0.9.90.tar.gz - source package: https://download.sf.net/qsynth/qsynth-0.9.90-1.1.rncbc.suse.src.rpm - binary packages: https://download.sf.net/qsynth/qsynth-0.9.90-1.1.rncbc.suse.x86_64.rpm - AppImage [20] package: https://download.sf.net/qsynth/qsynth-0.9.90-1.1.x86_64.AppImage - Windows package (thanks to Pedro Lopez-Cabanillas): https://download.sf.net/qsynth/qsynth-0.9.90-1.1.win-x64-setup.exe - Flatpak [21] package (also thanks to Pedro Lopez-Cabanillas): https://flathub.org/apps/details/org.rncbc.qsynth Git repos: https://git.code.sf.net/p/qsynth/code https://github.com/rncbc/qsynth.git https://gitlab.com/rncbc/qsynth.git https://codeberg.com/rncbc/qsynth.git ** Qsampler - A LinuxSampler Qt GUI Interface [3] ** Qsampler 0.9.90 (spring'24 aka. v1.0.0-rc1) is released! Qsampler is a LinuxSampler [11] GUI front-end application written in C++ around the Qt framework [7] using Qt Designer. Change-log: - Prepping the unthinkable (aka. v1.0.0-rc1) - Custom color themes are now file based (*.conf); legacy still preserved ntl. Website: https://qsampler.sourceforge.io http://qsampler.sourceforge.net Project page: https://sourceforge.net/projects/qsampler Downloads: https://sourceforge.net/projects/qsampler/files - source tarballs: https://download.sf.net/qsampler/qsampler-0.9.90.tar.gz https://download.sf.net/qsampler/liblscp-0.9.90.tar.gz - source packages: https://download.sf.net/qsampler/qsampler-0.9.90-1.1.rncbc.suse.src.rpm https://download.sf.net/qsampler/liblscp-0.9.90-1.1.rncbc.suse.src.rpm - binary packages: https://download.sf.net/qsampler/qsampler-0.9.90-1.1.rncbc.suse.x86_64.rpm https://download.sf.net/qsampler/liblscp6-0.9.90-1.1.rncbc.suse.x86_64.rpm https://download.sf.net/qsampler/liblscp-devel-0.9.90-1.1.rncbc.suse.x86_64… - AppImage [20] package: https://download.sf.net/qsampler/qsampler-0.9.90-1.1.x86_64.AppImage Git repos: https://git.code.sf.net/p/qsampler/code https://github.com/rncbc/qsampler.git https://gitlab.com/rncbc/qsampler.git https://codeberg.com/rncbc/qsampler.git https://git.code.sf.net/p/qsampler/liblscp https://github.com/rncbc/liblscp.git https://gitlab.com/rncbc/liblscp.git https://codeberg.com/rncbc/liblscp.git ** QXGEdit - A Qt XG Editor [4] ** QXGEdit 0.9.90 (spring'24 aka. v1.0.0-rc1) is released! QXGEdit is a live XG instrument editor, specialized on editing MIDI System Exclusive files (.syx) for the Yamaha DB50XG [14] and thus probably a baseline for many other XG devices. Change-log: - Prepping the unthinkable (aka. v1.0.0-rc1) - Custom color themes are now file based (*.conf); legacy still preserved ntl. Website: https://qxgedit.sourceforge.io http://qxgedit.sourceforge.net Project page: https://sourceforge.net/projects/qxgedit Downloads: https://sourceforge.net/projects/qxgedit/files - source tarball: https://download.sf.net/qxgedit/qxgedit-0.9.90.tar.gz - source package: https://download.sf.net/qxgedit/qxgedit-0.9.90-1.1.rncbc.suse.src.rpm - binary packages: https://download.sf.net/qxgedit/qxgedit-0.9.90-1.1.rncbc.suse.x86_64.rpm - AppImage [20] package: https://download.sf.net/qxgedit/qxgedit-0.9.90-1.1.x86_64.AppImage Git repos: https://git.code.sf.net/p/qxgedit/code https://github.com/rncbc/qxgedit.git https://gitlab.com/rncbc/qxgedit.git https://codeberg.com/rncbc/qxgedit.git ** QmidiCtl - A MIDI Remote Controller via UDP/IP Multicast [5] ** QmidiCtl 0.9.90 (spring'24 aka. v1.0.0-rc1) is released! QmidiCtl [5] is a MIDI remote controller application that sends MIDI data over the network, using UDP/IP multicast. Inspired by multimidicast [15] and designed to be compatible with ipMIDI [15] for Windows. QmidiCtl [5] was long ago designed for the Maemo [17] enabled handheld devices, namely the late Nokia N900 [18] and promoted to the Maemo Package [18] repositories. Nevertheless, QmidiCtl [5] may still be found effective as a regular desktop application and recently as an Android application as well. Change-log: - Prepping the unthinkable (aka. v1.0.0-rc1) Website: https://qmidictl.sourceforge.io http://qmidictl.sourceforge.net Project page: https://sourceforge.net/projects/qmidictl Downloads: https://sourceforge.net/projects/qmidictl/files - source tarball: https://download.sf.net/qmidictl/qmidictl-0.9.90.tar.gz - source package: https://download.sf.net/qmidictl/qmidictl-0.9.90-1.1.rncbc.suse.src.rpm - binary packages: https://download.sf.net/qmidictl/qmidictl-0.9.90-1.1.rncbc.suse.x86_64.rpm - AppImage [20] package: https://download.sf.net/qmidictl/qmidictl-0.9.90-1.1.x86_64.AppImage - Android packages: https://download.sf.net/qmidictl/qmidictl-0.9.90-1.1.arm64-v8a.apk https://download.sf.net/qmidictl/qmidictl-0.9.90-1.1.x86_64.apk https://play.google.com/store/apps/details?id=org.rncbc.qmidictl Git repos: https://git.code.sf.net/p/qmidictl/code https://github.com/rncbc/qmidictl.git https://gitlab.com/rncbc/qmidictl.git https://codeberg.com/rncbc/qmidictl.git ** QmidiNet - A MIDI Network Gateway via UDP/IP Multicast [6] ** QmidiNet 0.9.90 (spring'24 aka. v1.0.0-rc1) is released! QmidiNet is a MIDI network gateway application that sends and receives MIDI data (ALSA-MIDI [9] and JACK-MIDI [8]) over the network, using UDP/IP multicast. Inspired by multimidicast [15] and designed to be compatible with ipMIDI [16] for Windows. Change-log: - Prepping the unthinkable (aka. v1.0.0-rc1) Website: https://qmidinet.sourceforge.io http://qmidinet.sourceforge.net Project page: https://sourceforge.net/projects/qmidinet Downloads: https://sourceforge.net/projects/qmidinet/files - source tarball: https://download.sf.net/qmidinet/qmidinet-0.9.90.tar.gz - source package: https://download.sf.net/qmidinet/qmidinet-0.9.90-1.1.rncbc.suse.src.rpm - binary packages: https://download.sf.net/qmidinet/qmidinet-0.9.90-1.1.rncbc.suse.x86_64.rpm - AppImage [20] package: https://download.sf.net/qmidinet/qmidinet-0.9.90-1.1.x86_64.AppImage Git repos: https://git.code.sf.net/p/qmidinet/code https://github.com/rncbc/qmidinet.git https://gitlab.com/rncbc/qmidinet.git https://codeberg.com/rncbc/qmidinet.git - - - License: All of the Qstuff* are free, open-source Linux Audio [11] software, distributed under the terms of the GNU General Public License (GPL) version 2 or later [12]. References: [1] QjackCtl - A JACK Audio Connection Kit Qt GUI Interface https://qjackctl.sourceforge.io [2] Qsynth - A fluidsynth Qt GUI Interface https://qsynth.sourceforge.io [3] Qsampler - A LinuxSampler Qt GUI Interface https://qsampler.sourceforge.io [4] QXGEdit - A Qt XG Editor https://qxgedit.sourceforge.io [5] QmidiCtl - A MIDI Remote Controller via UDP/IP Multicast https://qmidictl.sourceforge.io [6] QmidiNet - A MIDI Network Gateway via UDP/IP Multicast https://qmidinet.sourceforge.io [7] Qt framework, C++ class library and tools for cross-platform application and UI development https://qt.io/ [8] JACK Audio Connection Kit https://jackaudio.org [9] ALSA, Advanced Linux Sound Architecture https://www.alsa-project.org/ [10] FluidSynth - A SoundFont Synthesizer A real-time software synthesizer based on SoundFont 2 specifications https://www.fluidsynth.org [11] LinuxSampler - The Linux Sampler Project A modular, streaming capable, realtime audio sampler https://www.linuxsampler.org [12] Linux Audio consortium of libre software for audio-related work https://linuxaudio.org [13] GPL - GNU General Public License https://www.gnu.org/copyleft/gpl.html [14] Yamaha DB50XG (https://web.archive.org/web/20150607065739/) http://www.soundonsound.com/sos/1996_articles/may96/yamahadb50xg.html [15] multimidicast - sends and receives MIDI from ALSA sequencers over network https://llg.cubic.org/tools/multimidicast [16] ipMIDI - MIDI over Ethernet ports - send MIDI over your LAN https://nerds.de [17] Maemo.org - Home of the Maemo community https://www.maemo.org [18] Maemo.org Wiki - Nokia N900 https://wiki.maemo.org/Nokia_N900 [19] Maemo.org - Downloads: QmidiCtl https://maemo.org/downloads/product/Maemo5/qmidictl [20] AppImage, Linux apps that run anywhere https://appimage.org/ [21] Flatpak, next-generation technology for building and distributing desktop applications on Linux https://flatpak.org/ [22] RtMidi, A set of (cross-platform) C++ classes that provide a common API for realtime MIDI input/output. https://github.com/thestk/rtmidi See also: https://www.rncbc.org/drupal/node/2584 See y'all soon! - - - rncbc aka Rui Nuno Capela

2 weeks, 2 days

MIDI 2

by Will Godfrey

I've seen quite a few adverts for MIDI2 keyboard controllers now, so has anyone tried interfacing with this yet? If so, what sort of problems have you had to resolve. -- Will J Godfrey {apparently now an 'elderly'}

1 month

Update of zita-jacktools

by Fons Adriaensen

Hello all, zita-jacktools 1.7.1 is now available at the usual place: <http://kokkinizita.linuxaudio.org/linuxaudio/downloads/index.html> zita-jacktools is a collection of Jack audio processors implemented as Python classes. These can be combined to create complex graphs that are completely controlled by a Python script and can be interfaced to anything that Python can handle. Main applications are automated measurements, sound installations, listening tests, etc. New is this release: class JackBw8filt Up to 100 8th order Butterworth bandpass filters. Each one can be configured separately and be lowpass, highpass or both in series. Mainly meant for measurements that require this sort of filtering. classes JackFwplay amd JackFwcapt These two classes allow to process an audio file via any combination of Jack apps that function correctly in Jack's freewheeling mode, and record the result. All examples having a GUI now use PyQt6 -- FA

1 month

Re: ome Faust questions

by Stéphane Letz

> > Hello all, > > Triggered by a recent post, I've been dabbling a bit with Faust, > and have some questions :-) > > (For the jack-gtk architecture) > > - When started the app prints some useless info (a nuisance) and > it also autoconnects (a definite no-go). > Is there any way to avoid this ? > > - The faust2jack script says it adds 'preset' functionality > to the GUI. But there seems to be no way to access this. > > - The way the PRESETDIR is handled is weird. It is done by > prepending a single line temporary file to the merged cpp file > using cat. > > What would be wrong with > > # add preset management > if [ $PRESETDIR = "auto" ]; then > PRESETDEFS=-DPRESETDIR=\"/var/tmp/\" > else > PRESETDEFS=-DPRESETDIR=\"$PRESETDIR\" > fi > > and then adding PRESETDEFS to the compiler options ? Sure, I guess this specific thing came by coping an already written « way of doing », lack of Unix culture, years of history… > > (General) > > - The various faust2*** programs work by merging the compiled dsp > file with the architecture file. While doing this, also all > include files from the /usr/include/faust directory are recursively > expanded in-line. Now I wonder why this is done. Surely the C++ > preprocessor would do this anyway ? > > This -i option is there to produce a kind of « self-contained » Faust architecture (so only inlining the « faust/xxx » files). And possibly not really needed in this specific example : history, copy/paste…etc... Stéphane,

1 month

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