Linux-audio-user May 2022

linux-audio-user@lists.linuxaudio.org

29 participants
20 discussions

by Will Godfrey

Does anyone know of software that can generate MIDI messages from a touchpad? The idea would be to send CCs to a sequencer or soft synth, but being able to send it to an external hardware device would also be very useful. -- Will J Godfrey https://willgodfrey.bandcamp.com/ http://yoshimi.github.io Say you have a poem and I have a tune. Exchange them and we can both have a poem, a tune, and a song.

7 months

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.

2 years, 1 month

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)

2 years, 3 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, 7 months

irqbalance and searchable list archive?

by Peter P.

Hi list, I am trying to find out if running or disabling the irqbalance service will improve or degrade audio performance on my four cpu x230 laptop? I was furthermore trying to search this list's archive, but could not find a search engine at https://lists.linuxaudio.org/listinfo/linux-audio-user Is there any? Thank you! P

2 years, 11 months

Behringer UMC1820 experiences and sync settings?

by Peter P.

Hi list, I am thinking of replacing my RME HDSP CardBus+Multiface after twenty years because it has never been really stable (firmware doesn't load reliably, multiface is sometimes randomly detected as digiface, random I/O box disconnects locking up jackd, etc.). This is sad because it is such a great card. Now I am looking for similar specs with a class compliant USB connection. I am trying to avoid Motu and the newer RME devices because I would pay a lot for (DSP/Mixer) features that would remain inaccessible for me from within Linux. It seems, and hesitate to say so, that the Behringer UMC1820 is the closest to my needs. Has many I/Os and most if not all of its settings should be configurable from the boxes hardware controls. The only thing I am wondering about is how I can tell the card to be a digital clock source or follower. Is this something that can be set with alsamixer perhaps? Does anyone have the card and can confirm and report on its reliability perhaps? Thanks! Peter

2 years, 11 months

Re: [LAU] Behringer UMC1820 experiences and sync settings?

by nik＠parkellipsen.de

2 years, 11 months

Re: [LAU] Behringer UMC1820 experiences and sync settings?

by nik＠parkellipsen.de

(Sorry, not sure why my last attempt to send this was empty) Hi Peter, referring to the UMC1820. According to Thomann's webpage it's been available since May 2016, I think I bought mine in 2018, so I have it more like 4 years now, not 5, now that I think about it. I checked in alsamixer, you can switch the clock source between internal and "Opt In SPDI" (or something like that). Best, Niklas Peter P. wrote on 29.05.2022 18:31 (GMT +02:00): > Nik, > > thanks! Are you refering to the UMC1820 or UCA202? Has the UMC1820 > really been around for five years already? > What does alsamixer show you for the device when you scroll through the > "Playback" "Capture" "All" views with the TAB key? > > best, P > > * nik(a)parkellipsen.de <nik(a)parkellipsen.de> [2022-05-29 16:52]: > > I own the mentioned device and have been using it with JACK and PipeWire > for > > a while now, mostly to drive multichannel setups. Haven't done much > recording > > with it, so I can't say much about the preamp quality. > > > > Regarding the clock source part, I'm not sure because that's something I > never > > needed. > > > > My general impression is that it runs stable and reliable, haven't had > any > > problems so far (after 5 years or so). Used it > > at home (in my not-so-super-dry garage) and for 8-channel concerts, so > it has > > been moved around quite a bit. > > > > I guess I'm one of the people who never had much trouble with Behringer > > devices. The UCA202 works > > like a charm, and on the several occasions I worked with X32s in their > several > > flavors, it was a > > good all around experience (in fact, the latter one seems one of the > only > > class-compliant devices with > > such a high channel count). > > > > Best, > > N > > > > > > > > Peter P. wrote on 29.05.2022 10:29 (GMT +02:00): > > > Hi list, > > > > > > I am thinking of replacing my RME HDSP CardBus+Multiface after twenty > > > years > > > because it has never been really stable (firmware doesn't load > reliably, > > > multiface is sometimes randomly detected as digiface, random I/O box > > > disconnects locking up jackd, etc.). This is sad because it is such a > > > great card. Now I am looking for similar specs with a class compliant > > > USB connection. I am trying to avoid Motu and the newer RME devices > > > because I would pay a lot for (DSP/Mixer) features that would remain > > > inaccessible for me from within Linux. It seems, and hesitate to say > so, > > > that the Behringer UMC1820 is the closest to my needs. Has many I/Os > and > > > most if not all of its settings should be configurable from the boxes > > > hardware controls. The only thing I am wondering about is how I can > tell > > > the card to be a digital clock source or follower. Is this something > > > that can be set with alsamixer perhaps? Does anyone have the card and > > > can confirm and report on its reliability perhaps? > > > > > > Thanks! > > > Peter > > > _______________________________________________ > > > Linux-audio-user mailing list > > > Linux-audio-user(a)lists.linuxaudio.org > > > https://lists.linuxaudio.org/listinfo/linux-audio-user > > > > > > > > _______________________________________________ > > Linux-audio-user mailing list > > Linux-audio-user(a)lists.linuxaudio.org > > https://lists.linuxaudio.org/listinfo/linux-audio-user > _______________________________________________ > Linux-audio-user mailing list > Linux-audio-user(a)lists.linuxaudio.org > https://lists.linuxaudio.org/listinfo/linux-audio-user > >

2 years, 11 months

jackd1 uses 100%cpu with ALSA: seq_lock: waiting in dmesg

by Peter P.

Hi list, jackd1 on my computer strangely suddenly uses 100% cpu and I find the following ALSA: seq_lock: waiting [1 left] in sound/core/seq/seq_ports.c:266 in dmesg. I can not quit it with qjackctl and had to do a hard power reset, despite jackd1 being still able to receive and output audio signals. Is this error known in any way? I can't seem to reproduce this behavior. Thanks! P

2 years, 11 months

Clients Can't Disconnect from Jack

by Brandon Hale

Hello all, I recently switched my machine over to using Pipewire+wireplumber to try it out. Long story short, I tried out Pipewire, found that I had lots of xruns when using pro-audio software, then decided that I should switch back to jack2+pulse to get my audio work done. However, I have switched back now, by uninstalling pipewire packages and reinstalling pulse and jack2 packages, and now whenever I run jack and close a jack application, the jack application's gui freezes and it seems the applications can't disconnect from jack. As an added bonus, fluidsynth software can't start anymore. This includes qsynth and ace fluidsynth in ardour. Whenever I start a fluidsynth-based application, it just freezes and can't seem to connect to jack (they don't show up in qjackctl's connections). Does anyone here have any ideas on what may be happening. None of this was a problem before I switched over to pipewire to test things. I wonder if there is a configuration file somewhere that is causing this that maybe pipewire set. I use Artix Linux runit as my distro, so everything is up-to-date. Thank you very much for your help or advice, Brandon Hale

2 years, 11 months

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Linux-audio-user May 2022