Linux-audio-user

linux-audio-user@lists.linuxaudio.org

3 participants
20662 discussions

by jonetsu

This is a relaxed, even pensive, short piece done way out of any BPM considerations. Completely turned the metronome off. That pesky thing. Like a devil poking. Darn. Sweetly pulsating, 3 minutes off the grid: https://soundcloud.com/nominal6/offthegrid-1 Cheers.

7 years, 11 months

[Music] Off the Grid

by jonetsu

This is a relaxed, even pensive, short piece done way out of any BPM considerations. Completely turned the metronome off. That pesky thing. Like a devil poking. Darn :) Sweetly pulsating, 3 minutes off the grid: https://soundcloud.com/nominal6/offthegrid-1 Cheers.

7 years, 11 months

io GNU/Linux 2017.03 out :)

by io GNU/Linux

Hi all, New images are ready for testing (amd64, i386) ;) io GNU/Linux is a Live DVD/USB based on Debian Sid and focused on multimedia. -> Kernel 4.14 and 4.14-rt1, Jack2+PulseAudio as default sound server (can be easily changed to Jack2+AlsaLoop, Jack2+ZitaBridge, PulseAudio or Alsa) -> Enlightenment (e22) as desktop environment and a big collection of installed software... Full persistence for USB install (with encryption) and more stuff... For more infos: manual, packages list, screenshots, video etc... Visit: -> http://io.gnu.linux.free.fr -> https://sourceforge.net/projects/io-gnu-linux/ Feedbacks welcome, enjoy :) MK

7 years, 11 months

anyone running 4.13.15-300.rt5.1.fc27.ccrma.x86_64+rt + snd_usb yet?

by Chris Caudle

Anyone running the 4.13.15-300.rt5.1.fc27.ccrma.x86_64+rt from the PlanetCCRMA repository with a USB audio interface? I find that my USB interface makes output so distorted it is not recognizable with that RT kernel, but works OK with the stock fedora kernel. I find no error messages in /var/log/messages or dmesg when playing audio. I tried aplay, but no error messages at all. I thought perhaps jackd would give useful error messages, but I see no errors when starting, but "no callback" messages begin showing up right away. I'm stopped at the moment, I do not know how to proceed without finding some kind of error message to point me in the right direction. Is there any other location to find status information on USB audio devices? This is the rtirq configuration in use: RTIRQ_NAME_LIST="usb enp3s4f1 i8042" RTIRQ_PRIO_HIGH=95 RTIRQ_PRIO_DECR=2 Is "usb" enough there, or should it be snd_usb in place of usb? As an aside, I found that the IRQ priorities were not set automatically, I had to manually run rtirq, but that is probably a fedora package problem. Getting USB interrupt priority set to a high priority made no difference This is the startup output from jackd: Acquire audio card Audio1 creating alsa driver ... hw:Lambda|hw:Lambda|1024|3|48000|0|0|nomon|swmeter|-|32bit configuring for 48000Hz, period = 1024 frames (21.3 ms), buffer = 3 periods ALSA: final selected sample format for capture: 24bit little-endian ALSA: use 3 periods for capture ALSA: final selected sample format for playback: 24bit little-endian ALSA: use 3 periods for playback Jack: JackSocketServerChannel::Open Jack: JackServerSocket::Bind : addr.sun_path /dev/shm/jack_default_1000_0 Jack: JackSocketServerChannel::BuildPoolTable size = 1 Jack: JackEngine::Open Jack: JackClientSocket::Connect : addr.sun_path /dev/shm/jack_default_1000_0 Jack: JackEngine::ClientInternalOpen: name = freewheel Jack: JackEngine::AllocateRefNum ref = 1 Jack: JackPosixSemaphore::Allocate name = jack_sem.1000_default_freewheel val = 0 Jack: JackEngine::NotifyAddClient: name = freewheel Jack: JackDriver::ClientNotify ref = 1 driver = system name = freewheel notify = 0 Jack: JackDriver::ClientNotify ref = 0 driver = freewheel name = system notify = 0 Jack: JackConnectionManager::DirectConnect first: ref1 = 1 ref2 = 1 Jack: JackGraphManager::ConnectRefNum cur_index = 0 ref1 = 1 ref2 = 1 Jack: JackDriver::SetupDriverSync driver sem in flush mode Jack: JackGraphManager::SetBufferSize size = 1024 Jack: JackAlsaDriver::Attach fBufferSize 1024 fSampleRate 48000 Using port names patch v0.1 (07.04.2010) Trying to load portnames from /home/chris/.config/jack/cards/Lexicon Lambda.ss.ports.in Trying to load portnames from /home/chris/.config/jack/cards/Lexicon Lambda.ports.in Trying to load portnames from /etc/jack/cards/Lexicon Lambda.ss.ports.in Trying to load portnames from /etc/jack/cards/Lexicon Lambda.ports.in Trying to load portnames from /home/chris/.config/jack/cards/Lexicon Lambda.ss.ports.out Trying to load portnames from /home/chris/.config/jack/cards/Lexicon Lambda.ports.out Trying to load portnames from /etc/jack/cards/Lexicon Lambda.ss.ports.out Trying to load portnames from /etc/jack/cards/Lexicon Lambda.ports.out Jack: JackEngine::PortRegister ref = 0 name = system:capture_1 type = 32 bit float mono audio flags = 22 buffer_size = 1024 Jack: JackGraphManager::AllocatePortAux port_index = 1 name = system:capture_1 type = 32 bit float mono audio Jack: JackConnectionManager::AddOutputPort ref = 0 port = 1 Jack: JackEngine::ClientNotify: no callback for notification = 9 Jack: JackEngine::ClientNotify: no callback for notification = 9 Jack: JackAlsaDriver::Attach fCapturePortList[i] 1 Jack: JackEngine::PortRegister ref = 0 name = system:capture_2 type = 32 bit float mono audio flags = 22 buffer_size = 1024 Jack: JackGraphManager::AllocatePortAux port_index = 2 name = system:capture_2 type = 32 bit float mono audio Jack: JackConnectionManager::AddOutputPort ref = 0 port = 2 Jack: JackEngine::ClientNotify: no callback for notification = 9 Jack: JackEngine::ClientNotify: no callback for notification = 9 Jack: JackAlsaDriver::Attach fCapturePortList[i] 2 Jack: JackEngine::PortRegister ref = 0 name = system:playback_1 type = 32 bit float mono audio flags = 21 buffer_size = 1024 Jack: JackGraphManager::AllocatePortAux port_index = 3 name = system:playback_1 type = 32 bit float mono audio Jack: JackConnectionManager::AddInputPort ref = 0 port = 3 Jack: JackEngine::ClientNotify: no callback for notification = 9 Jack: JackEngine::ClientNotify: no callback for notification = 9 -- Chris Caudle

7 years, 11 months

Massive Xruns during recording

by Jeanette C.

Hey hey, when I recorded something today - after a long time - I noticed masive xruns during recording, not during playback. I suspected LinuxSampler with the SFZ engine, but - as far as I could see - it doesn't use much CPU. It's still getting so bad that I get horrible timing issues. I am recording five stereo tracks from LS, while four more tracks are playing back. Below you'll find system/software info. I'd welcome any tip. Kernel: 4.13.12-1-ARCH (64bit) CPU: AMD Athlon(tm) II X4 640 Processor (as listed in /proc/cpuinfo) realTimeConfigQuickScan reports that the system is good, except for no full preemtion enabled in the kernel. LinuxSampler: v2.0.0 jackd: v0.125.0 (-R --timeout 4500 -d alsa -C multi_capture -P multi_playback -r 48000 -p 256 -z shaped) multi_capture and multi_playback are ALSA devices that couple two MAudio Delta 1010LT cards (linked by S/PDIF clocking) Internal hard-drive: apparently SAMSUNG HD154UI (as found via /sys) Best wishes, Jeanette -------- * website: http://juliencoder.de - for summer is a state of sound * SoundCloud: https://soundcloud.com/jeanette_c No one in this world Knows me better than you do So diary I'll confide in you <3 (Britney Spears)

7 years, 11 months

problem with LFE output "leaking" into rear speaker

by john gibby

I have an interesting problem. I'm using optical outputs to a d/a with 8 output channels (Frontier Tango24), but I needed 10 output channels. So for the l/r rear channels I'm using the spdif outputs from my RME card connected to an Orei DA21 2 channel D/A unit. This seemed to work fine, but when testing I limited the Ecasound output to LFE only, and I noticed that somehow the LFE signal gets sent to the l/r rear amp in addition to the sub amp, and I hear LFE coming out of my small(er) rear speakers. (I put a 50hz high-pass filter on them for now, until I figure this out.) I'm guessing this might have to do with 32 bit vs. 24 bit output or something. Here's the line in Ecasound that outputs to Jack: -a:rear,LFE,sub_left,sub_right,center_sub,center_low,center_mid,side_low, side_high -f:f32_le,10,48000 -o:jack Any ideas? Thanks, John

7 years, 11 months

looking for midi piano keyboard with "natural" piano touch

by Cedric Roux

Hi all, I'm looking for a piano keyboard ("midi master keyboard" I think it's called). I'm looking for something with keys that feel more or less like a real piano. I've seen several models, some have real hammers inside. I wonder if that's useful/necessary to emulate a piano touch. I want 88 keys (standard piano) and USB connection. I want something that I can plug into my computer and that would work as a midi source more or less out of the box with my Debian-based system. (I can write some code, no problemo, I do it all the time. I just need something compatible with linux.) So, I would like to know if any of you, preferably someone who knows and likes to play the (real) piano, uses this kind of devices, and if yes what model you use. My main idea is to have a "portable piano" because I can't afford the real beast, plus I need something I can use at 2am without annoying neighbours. And I want something of reasonable quality. Thanks!

7 years, 11 months

Re: [LAU] looking for midi piano keyboard with "natural" piano touch

by Edward Diehl

The Casio Privia keyboards should also be considered due to decent action, modest cost, and low weight. I have the Privia 5X-5S, though I think the whole PX line has the same keybed so if you only want a keyboard you buy a less expensive model like the PX-350. Not claiming this a substitute for an actual piano, but I think it is a good value for the money. If you have a larger budget there are probably better keyboards, but as has been said by others, you should try out keyboards to see what you like (though in my experience high-end midi controllers are hard to find in music stores). Of course, another issue a Linux pianist faces is the limited options of good piano sounds (or any sounds). Luckily Pianoteq is available for linux and has gotten quite good, though not exactly cheap. I am also glad I picked up some SampleTekk gigasampler piano samples before they stopped selling them. TBO is my favorite, though Black Grand is also excellent. SampleTekk does sell SFZs of these, but they are not nearly as good as the gigasampler versions. The only decent open source piano is the Salamander grand. Quality of piano sound is mostly important for solo playing. In mix you can play almost anything and you won't notice the difference.

7 years, 11 months

[Music] An interpretation

by Jeanette C.

Hey hey, I recently watched a video called "sad christmas" (or similar), which inspired me to do my own "sad christmas" contribution in the form of an orchestral interpretation of the German christmas carol "Oh Tannenbaum" in a minor key. Besides trusty Nama for recording, the only other software involved was LinuxSampler for the (commercial) trumpet and Aeolus for the wonderful basso continuo. Also jconvolver for appropriate reverb. http://juliencoder.de/nama/tannenbaum.ogg http://juliencoder.de/nama/tannenbaum.mp3 Comments are welcome, I hope you enjoy it. Best wishes, Jeanette -------- * website: http://juliencoder.de - for summer is a state of sound * SoundCloud: https://soundcloud.com/jeanette_c 'Cause living in a dream of you and me Is not the way my life should be... <3 (Britney Spears)

7 years, 11 months

Linux Audio Berlin meeting @ c-base 2017-12-06

by Daniel Swärd

Hi all. Just a friendly reminder for the monthly meeting at c-base (Rungestraße 20). I'll be in the mainhall from 20:00. Hope to see you there! Cheers /Daniel

7 years, 11 months

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Linux-audio-user