Linux-audio-user November 2020

linux-audio-user@lists.linuxaudio.org

32 participants
33 discussions

Steinway_IMIS2.2 soundfont (no loops fix)

by Roberto Gordo Saez

This is Steinway_IMIS soundfont, version 2.2. ftp://musix.ourproject.org/pub/musix/sf2/Steinway_IMIS2.2 This version fixes the issue with loops. I hope this is the good one and there are no more remaining major bugs. Marcos is a little busy right now, so he asked me to make this fix. He is thinking to make other improvements, so expect more updates soon.

1 year, 7 months

Raspberry PI and PISound

by worik

Is anybody out here in LAU land have experience with PISound? https://www.blokas.io/pisound/ I have just bought one and am having quite sever teething problems with it. It keeps freezing for ~45 seconds when running X and I cannot get it to use the full display. cheers Worik -- If not me then who? If not now then when? If not here then where? So, here I stand, I can do no other root(a)worik.org 021-1680650, (03) 4821804 Aotearoa (New Zealand)

1 year, 10 months

LinnStrument on Linux

by Thomas Poulsen

Dear list, I recently bought a LinnStrument from Roger Linn Design: http://www.rogerlinndesign.com/linnstrument.html It is a great isomorphic midi-controller, and as such it is immediately recognized on Linux. The distinguishing feature of the LinnStrument is that it senses 3 degrees of freedom on each note: x-direction, y direction and z-direction (pressure). The x-direction is mapped to pitch-bend, and y-direction to CC74. A cool feature is the "slide", where the pitch-bend is used to slide between all notes in a row. To allow individual pitch and CC74 values for each note, it sends each note on a separate midi-channel ("MPE"): http://www.rogerlinndesign.com/implementing-mpe.html Bitwig has added support for this, and there is 20 presets in version 1.3.11, where this is used (tag: linnstrument). The LinnStrument controller is not recognized automatically on Linux in version 1.3.11, but it can be configured manually, and then it works fine. Note that both midi-in and midi-out has to be configured, if not there is no sound! It should look like this: https://ibin.co/2msBJVgpKtf9.png Now I would like to also use it with the free Linux synths. Here's what I have been able to make work this far. Synthv1: PME works reasonably well: I can play polyphonic in MPE mode, but it tends to miss the "note off"s. I can get the slide to work, by setting <param index="36" name="DEF1_PITCHBEND">2</param> <param index="78" name="DEF2_PITCHBEND">2</param> is a preset. Zynaddsubfx: I can not get MPE to work. Sending only on one channel, and setting PWheelB.Rng to 2400 cents, I cant get the sliding to work, but only when playing with one finger. If I enable MPE on the LinnStrument there is only an occasional sound, when it happens to send on the channel, that Zyn is listening on. I'll love to hear if other LinnStrument users have been able to do more with any of the free synths on Linux. All the best, Thomas

2 years, 1 month

Hardware Soundcard - MOTU 624 AVB Working with Gnu/Linux - Debian 8.7

by list

Hello. You know the AVB serie from MOTU. We've talked about the 1248 & the UTRALITE AVB previously on the Linux Audio Users list : http://lists.linuxaudio.org/pipermail/linux-audio-user/2017-May/108050.html http://lists.linuxaudio.org/pipermail/linux-audio-user/2017-March/107629.ht… Now the MOTU 624 AVB. Working with Gnu/Linux Debian 8.7. The same as 1248 & ULTRALITE AVB, «real» class compliant, and web app to control all the settings of the card from your browser. Update firmware with 0 trouble through the web app interface : http://achromatopsie.fr/list/00_installfirm.jpg http://achromatopsie.fr/list/01_verifyingfirm.jpg http://achromatopsie.fr/list/02_rebootfirm.jpg http://achromatopsie.fr/list/03_successfirm.jpg Some screen shot from the Routing menu (sorry need to zoom out, too much inputs ! AVB disabled so no stream appears on the screen) http://achromatopsie.fr/list/04_routing.jpg Screen shot from the Mixing menu : http://achromatopsie.fr/list/05_mixing.jpg http://achromatopsie.fr/list/06_mixingzoom.jpg http://achromatopsie.fr/list/07_mixingzoom1.jpg And from the Device menu : http://achromatopsie.fr/list/08_device.jpg http://achromatopsie.fr/list/09_device2.jpg Pluged with USB3, Gnu/Linux Debian 8.7 - Custom Kernel : Linux 4.9.3-amd-64-20170113 #1 SMP PREEMPT Sat Apr 8 17:30:25 CEST 2017 x86_64 GNU/Linux lsusb Bus 003 Device 002: ID 07fd:0005 Mark of the Unicorn lsusb -t /: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 5000M |__ Port 1: Dev 2, If 0, Class=Audio, Driver=snd-usb-audio, 5000M |__ Port 1: Dev 2, If 1, Class=Audio, Driver=snd-usb-audio, 5000M |__ Port 1: Dev 2, If 2, Class=Audio, Driver=snd-usb-audio, 5000M |__ Port 1: Dev 2, If 3, Class=Vendor Specific Class, Driver=, 5000M |__ Port 1: Dev 2, If 4, Class=Vendor Specific Class, Driver=, 5000M |__ Port 1: Dev 2, If 5, Class=Vendor Specific Class, Driver=, 5000M aplay -l **** Liste des Périphériques Matériels PLAYBACK **** carte 0: D624 [624], périphérique 0: USB Audio [USB Audio] Sous-périphériques: 0/1 Sous-périphérique #0: subdevice #0 Made some quick record (guitar from emulated output of an amp, microphone vocal) nothing to say, work perfectly. Nice preamp - for me - clean, no hiss, no background noise, nice dynamic, can hear all my bad notes and bad fingers on the guitar :) The line input - jack - work also perfectly, respect the color of my preamp (Warm Audio) Did not try the optical I/O as i do not have any devices for it. Thanks UC2, thanks MOTU. Anyone have access to the Alsa project card's list and update ? https://www.alsa-project.org/main/index.php/Matrix:Vendor-Mark_Of_The_Unico… All the best !

3 years, 10 months

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

by Hermann Meyer

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

3 years, 10 months

Affordable well-working USB interface with low latency at 48kHz?

by David Kastrup

Hi, I am currently trying to get the members of my accordion orchestra to commit to rehearsals using Jamulus. Under Linux, Jamulus uses jackd to access sound. There is a "JamulusOS" bootable image that will use Linux to access the soundcard. Now I want to recommend something to band members (and/or get it myself) when their sound quality and/or latency is not up to par. My own collection of sound cards here tends to be Firewire, and supporting that is not really feasible (the finances would be strained by requiring a Thunderbolt->Firewire adapter and Thunderbolt is not a given, while Firewire is not something modern people can think about, and my Expresscard Firewire adapters still require an actual Expresscard slot). My own solution right now is an Alesis iO/14 which runs with a roundtrip latency of about 160 samples at 48kHz. I've just dug out my still-not-resold RME HDSP Multiface with a PCMCIA Adapter in an Expresscard-to-PCMCIA adapter which is sort of a reference interface and it delivers 62 samples roundtrip delay. Which is impressive but nobody has the interfaces for that anymore and it would not be a recommendation because of its pricing. I've lent out one Tascam US-122L interface and Tascam has 64bit drivers for it on its web page that work reasonably well. Wow. Under Linux, I have not been able to get it to work recently and it uses really obscure and undocumented Alsa modes to get at the data: to provide full-duplex at higher sample rates (48kHz? 96kHz? 24bit? Don't remember) via USB1.1, it has its own protocols that are not class compliant. So while it miraculously does work with modern Windows, it would not be a useful option for JamulusOS. And I am sure I'd get a JamulusOS setup to run on other people's hardware, and don't have what it takes to make Windows dropout-free, what with all its secret background processes. So that interface is only good for people who feel competent at hardware jiggling with Windows. So I am lacking a reasonably solid recommendation of (possibly older but reasonably quality) hardware with 1 or 2 mic inputs and +48V phantom power and likely USB2.0 HiSpeed class compliant, possibly 2 headphone outputs (the lockdown permits two households convening), good reliability/support under Linux (meaning no obscure software and/or Windows required for dealing with hardware mixers and mic preamp boosts), reasonably low roundtrip latency at 48kHz (does not need to be the insane 5ms from the RME DSP Multiface). Something that I would not mind taking back. And which is dirt cheap these days. I know, I know, wishful thinking. But I will not persuade people to buy old laptops for this feat, and while I might try starting them off their built-in soundcards/mics to get them warm to the idea, I need a good path forward. Thanks for useful suggestions! -- David Kastrup

3 years, 11 months

[music] Semi-modular jam: Endless

by Jeanette C.

Hey hey, I have finally explored the art of sequence based jamming. One CV/Gate sequencer is controlling three synthesizers, while improvisations happen on the fourth. In Linux this was recorded live and only processed with a bit of reverb, EQ and compression. I must admit it is a great experience. :) https://youtu.be/RSk1OCb0MZs If you need a direct link: https://www.dropbox.com/s/gvc1dtdbtmsowhk/endless.ogg (again this link will be active for about two weeks). I hope it improves soimeone's day. :) 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 Our imagination Taking us to places We have never been before... <3 (Britney Spears)

3 years, 11 months

LAC 2020 edition

by Thibaud Keller

Hello everybody, On behalf of the LAC 2020 organization team we'd like to welcome you all to LAC 2020 which due to the current confining situation in France will take place via teleconferencing on Nov 25-27. A Big Blue Button (BBB) instance, the teleconferencing software that we use, has been set up for conducting the conference. We will follow up by publishing the official link both by mail and on the conference website <https://lac2020.sciencesconf.org/> when the conference starts. Additionally, in case you cannot attend, note that all talks will be recorded. The programme is beinng finalized and is available here: https://lac2020.sciencesconf.org/program If you plan to attend, please take the time and register here: https://lac2020.sciencesconf.org/registration As usual, the conference can be attended free of charge. We apologies for the delays in announcements See you at LAC 2020!

3 years, 11 months

An Improv

by Will Godfrey

This is something I put together a short while ago, that was a proof of the synth patch and the MIDI-learned technique I briefly performed on LAC. It was the first time I'd actually used this technique and was recorded in a single pass. The only editing was removal of some ghost notes where I'd clipped the adjacent key along with the one I intended. The patch is 'Multi Rushes', in my 'Companion' bank (added about 18 months ago) and the learned items are Filter Q and Filter Cutoff in the MIDI Controls window. http://www.musically.me.uk/music/Improv-Zen.ogg I hope you like it. -- Will J Godfrey http://www.musically.me.uk Say you have a poem and I have a tune. Exchange them and we can both have a poem, a tune, and a song.

3 years, 11 months

Re: [LAU] Linux-audio-user Digest, Vol 165, Issue 25

by David Sumbler

Date: Sun, 29 Nov 2020 20:21:15 -0600 > From: "Chris Caudle" <chris(a)chriscaudle.org> > To: linux-audio-user(a)lists.linuxaudio.org > Subject: Re: [LAU] Can't save files in Qtractor > Message-ID: > <8a1e922ec5be1d10b832067c4dfa4226.squirrel(a)email.powweb.com> > Content-Type: text/plain;charset=iso-8859-1 > > On Sun, November 29, 2020 9:14 am, David Sumbler wrote: > > However, on my laptop computer, the "OK" button remains greyed out > > all > > the time. This is true whether or not I have made any changes > > since > > starting the new session. So I can't save any of my > > work. Currently, > > therefore, Qtractor is effectively unusable on the laptop. > > What directory does the dialog default to? Have you tried navigating > to a > different directory to save the file? Perhaps it defaults to a > directory > where you do not have write permission. Thank you for your reply. I solved this problem shortly after making my original post (isn't that always the way!) - so I logged into the list and deleted the post. But looking at the archives it still seems to be there. The problem turned out to be simply that, as the dialogue first appeared, the selected directory was shown as /home/david As soon as I normalized this to /home/david/ all was well. Of course, once things are up and running properly I'll use a dedicated directory, but as I was only just trying to set things up, and to get Jack, Qtractor, the sound system and my electric piano talking to each other nicely, I wasn't bothered about having a temporary file in my home directory. Thanks again for your help. David

3 years, 12 months

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Linux-audio-user November 2020