Linux-audio-user June 2014

linux-audio-user@lists.linuxaudio.org

65 participants
50 discussions

Re: [LAU] Live bass guitar -> analog synth on a 2007 laptop:, viable?

by Leonardo Gabrielli

Also consider testing your sound cards prior to the software: if you can't get them to work, or you can't exploit very low period sizes (64-128) then all the software will come to no use. And don't forget about some tests with MIDI to audio conversion in Rakarrak at low pitches... These are the two most importante showstoppers IMO. If you want to go low latency, consider a clean distro, for some tests, I use Audiophile Linux (AP Linux), because the kernel comes patched and you have the bare minimum (also you can start with a handy fluxbox desktop manager with all the process info), or just go for a stable debian and maybe patch it RT PREEMPT. L.

10 years, 6 months

FaustLive is released !

by Stéphane Letz

GRAME is happy to announce the official release of FaustLive. FaustLive is an advanced self-contained prototyping environment for the Faust programming language with an ultra-short edit-compile-run cycle. Thanks to its fully embedded compilation chain, FaustLive is simple to install and doesn't require any external compiler, development toolchain or SDK to run. FaustLive is the ideal tool for fast prototyping. Faust programs can be compiled and run on the fly by simple drag and drop. They can even be edited and recompiled while running without sound interruption or Jack disconnection. 1) Dynamic Compilation : On FaustLive’s windows you can drop your Faust code as a file, a string or a url. The code will be dynamically compiled and executed. You can then choose to edit your code. It will be opened in the default editor for .dsp files (FOLLOW THE README TO CONFIGURE FILE ASSOCIATION). The application will be automatically recompiled, every time you save your document. A crossfade is calculated between two relaying applications in a window to avoid brutal sound interruptions. 2) Audio Drivers : Depending on your Operation System, you will have different drivers available: On OSX : Coreaudio, Jack and NetJack On Linux : Jack and NetJack On Windows : Portaudio You can then dynamically switch from one to another in FaustLive’s preferences. 3) Export Your DSP : Exporting your DSP as plugins is easy, thanks to FaustWeb, compilation service. In FaustLive’s export menu, you can find every platform and architecture that Faust can target. As you choose your target, your code is sent to FaustWeb and you receive the requested binary in exchange. 4) Save Snapshots : If you create a configuration you like, you can save it as a Snapshot. The state of FaustLive will be saved (running applications, Jack connections, interface parameters, …). Later on, you will be able to whether : - recall the snapshot : closing any running application to restore the saved state - import the snapshot : adding the saved state to the current state 5) Remote Control Interfaces (only on Linux and OSX for now) : In the Windows Option toolBar, you can open a UDP port for OSC control or a TCP port for HTTP control. Moreover, the HTLM interface can be accessed through a QrCode that you can create from «View QrCode » in the menu « Window ». Download access: http://sourceforge.net/projects/faudiostream/files/ Tutorial video: http://www.youtube.com/watch?v=8ZUD2c5D-PU Sarah Denoux and Stéphane Letz

10 years, 6 months

My debut EP, "Indigo"

by William Light

Hey everyone, I've posted up a number of my songs here over the years, and I'm very pleased to announce the availability of my first EP. I've posted a few of these songs here already, but these versions are updated and mastered, and, of course, there's plenty of new material as well. The digital album is available for purchase for a modest 4eur from my Bandcamp site at http://visinin.com/album/indigo-e-p. If you'd prefer to stream it or if you have another digital store which you prefer, there are links to other stores from my Soundcloud page at https://soundcloud.com/visinin/sets/indigo-ep. Thanks again for the support and encouragement over the years. -w

10 years, 6 months

New MOD Website

by Gianfranco Ceccolini

Hi everybody Still recovering from the LAC2014 trip but already with news, here’s the link to our new website (including english version) www.portalmod.com The video that was shown at the MOD presentation is right in the frontpage. Even better, the plugin library can now be navigated in the same way as in the MODs interface. On top of it, there’s a dashboard section where visitors can try the interface without audio. Hope you all enjoy. Cheers Gianfranco Ceccolini

10 years, 6 months

EPH-O2 w/alsa - volume too low

by Radovan Misovic

Hi, I've recently purchased an Epiphany Acoustic O2 sound card, basically it's an USB DAC with a headphone amp. Problem is, the sound is barely audible. I've tested the amp independently (using the line in) and it works fine. So now I am trying to set up a preamp in alsa, but somehow I can't get it working. The config is below. I'd be grateful for any hints or ideas. Thanks, rad0 ------- asoundrc --------------------- # External USB DAC pcm.DAC { type hw card DAC } ctl.DAC { type hw card DAC } # Preamp on external DAC pcm.DAC { type plug slave.pcm "softvol" } pcm.softvol { type softvol slave { pcm "dmix" } control { name "preamp" card DAC } min_dB -5.0 max_dB 20.0 resolution 6 } ------- asoundrc --------------------- ++ Connection closed by remote ghost.

10 years, 6 months

4x4 usb audio interface

by Leonardo Gabrielli

Dear all, have anyone had experience of a 4in 4out usb audio interface, working on Linux: - with all 4 channels (I can afford some tinkering if needed) - at least in USB1 compliant mode, i.e. stereo 16-bit 48kHz) I have seen the Alesis iO4 should work, as well as (maybe) the Focusrite 6i6, and the Presonus 44vsl, but I got no consistent report on neither of these. Leonardo

10 years, 6 months

New GxBluemann.lv2

by hermann meyer

Hi I've made a new, simple basic guitar-amp lv2 plug. It's placed outside of the guitarix distribution, as a single plugin bundle. It comes without any fancy dependency (only make tools and gcc are needed). It comes without GUI. It is a tube screamer driving a powerful 2 stage 12ax7 tube amp with baxandall tone controls in the middle of the stages, followed by a cabinet. It needs here just ~5% DSP load. I'm very pleased with the sound of it, so I decide to share it with you, and keep it simple. I'm interested if this plug suite the needs of a bass player, as I didn't play bass, I cant really check this. But I think, with the baxandall controls it could be useful for bass as well. Simply run make to build it, run make install to install it (as user to ~./lv2 or as root (sudo) to /usr/lib/lv2, or run make deb to build a debian package and install that. http://sourceforge.net/projects/guitarix/files/lv2/gx_bluemann.lv2.tar.bz2/…

10 years, 6 months

[ANN] QmidiNet 0.2.0 is out!

by Rui Nuno Capela

Headless finally! QmidiNet 0.2.0 is out! all that is to say that it may now run without the GUI, eg. qmidinet --no-gui QmidiNet [1] is a MIDI network gateway application that sends and receives MIDI data (ALSA-MIDI and JACK-MIDI) over the network, using UDP/IP multicast. Inspired by multimidicast [2] and designed to be compatible with ipMIDI [3] for Windows. See also: http://www.rncbc.org/drupal/node/790 Website: http://qmidinet.sourceforge.net Project pages: http://sourceforge.net/projects/qmidinet Downloads: - source tarballs: http://downloads.sourceforge.net/qmidinet/qmidinet-0.2.0.tar.gz - source package (openSUSE 13.1): http://downloads.sourceforge.net/qmidinet/qmidinet-0.2.0-3.rncbc.suse131.sr… - binary packages (openSUSE 13.1): http://downloads.sourceforge.net/qmidinet/qmidinet-0.2.0-3.rncbc.suse131.i5… http://downloads.sourceforge.net/qmidinet/qmidinet-0.2.0-3.rncbc.suse131.x8… Weblog (upstream support): http://www.rncbc.org License: QmidiNet is free, open-source software, distributed under the terms of the GNU General Public License (GPL) [4] version 2 or later. Change-log: - A man page has beed added (making up Alessio Treglia's work on debian, thanks). - First attempt to allow a headless application run mode, without GUI or system-tray icon accessibility, with all options given as command line arguments. - Allow the build system to include an user specified LDFLAGS. References: [1] QmidiNet - A MIDI Network Gateway via UDP/IP Multicast http://qmidinet.sourceforge.net [2] multimidicast - sends and receives MIDI from ALSA sequencers over network http://llg.cubic.org/tools/multimidicast [3] ipMIDI - MIDI over Ethernet ports - send MIDI over your LAN http://nerds.de [4] GPL - GNU General Public License http://www.gnu.org/copyleft/gpl.html Cheers && Enjoy -- rncbc aka Rui Nuno Capela rncbc(a)rncbc.org

10 years, 6 months

Microphone Pre-amp with an S/PDIF output?

by Ivan K

The time has come for myself to acquire a microphone pre-amp. I do not require more than two channels and in fact, will probably do mostly mono recordings. My current audio card is a an M-Audio 2496, which has RCA and S/PDIF inputs. Due to the phasing out of PCI slots, it seems that USB interfaces are what most people are choosing to purchase these days. However, I was thinking about getting a microphone pre-amp with an s/pdif output. My thinking is: (1) One will always be able to buy PCIe cards in the future with S/PDIF (2) I don't have to worry about drivers. Just plug this pre-amp into the s/pdif input. However, it seems that the options for such a pre-amp are limited. I found the following items: (1) ART DPS-II Digital/Tube $265 The price does not seem unreasonable for a quality pre-amp. This thing does have a lot of knobs though, and therefore probably has more functionality than I know what to do with. (2) Samson C-Valve Tube Microphone Preamp $99 This item is discontinued but still available on amazon. This item did not review well on this list, but ... it is inexpensive. Is anyone aware of other options? So what do people think of this plan? Or do people recommend that I just go ahead and get a USB interface? Thank you for your help.

10 years, 6 months

Re: [LAU] Embertone Friedlander Violin on Linux - was Re: Recommended near-realistic strings section generator?

by Aiyumi Moriya

Back to the Embertone library. Oops. Outdated information. I just realized I had the original price wrong. I said $110, but that was several months ago. Now it's $120 for the 16-bit version and $125 for 24-bit. Anyway, some progress. A good and a bad news: the good news is that I was able to download the files. The bad is that (as much as I didn't want to do it), I had to resort to Windows. I tried on Wine a few more times, but the download always hung and the file always got corrupted. So, I tried using the app on Windows to see if there was any difference, planning to contact support if there wasn't. And sadly, there was... On Windows, everything downloaded without complaint, no hangs and no file corruptions. Looks like it was a Wine issue, after all... That means I got past the download issue, but it would be nice to figure out why it wasn't working on Wine. I tried again to see if I discovered something. Strange results. Wine 1.7.12 on Slackware 64-bit with multilib: * With Wine set to "Windows XP" in Winecfg, the Connect app opens and runs, but it's the same problem I said before. The download hangs from time to time. It even continues when pressing the resume button, but when the download gets to 100%, it says there was an error and it restarts from 0%. * With Wine set to "Windows 7", the program doesn't even start. It says there was an abnormal error and crashes. The Continuata site says it's a Java program wrapped in a binary executable, so it should run on "any" computer (they mean with Windows or Mac of course :P). Some googling returned an FAQ from another sample library developer: http://store.agsoundtrax.com/download-and-installation/ My problem on Wine sounds suspiciously like this question: ""The Connect utility is unable to successfully download files and shows a "DL Error" or "Install Error" warning. If you're getting incomplete or corrupted downloads or the utility displays a "DL Error" or "Install Error" status message to the right of a file after more than 3 automatic retries, that may be a sign of router or ISP issues. Try rebooting your modem and router first and then check to see if your ISP has imposed a bandwidth cap on your connection. It is becoming more common for ISPs around the world to limit large file downloads. If you have a monthly bandwidth or data limit with your ISP and you think you might be close to reaching it, please check with your ISP before ordering or make sure order the DVD version of the library." I don't know if it's my ISP, but I never had any problem with other downloads before, plus, on Windows the app worked fine (same machine, same modem, same router, same configuration). Maybe it's indeed a Wine issue, or a Wine internet connection issue... I just found other posts hinting that Kontakt can run on Wine and am more confident now. There's still this download issue though. But as per the link above, as well as some forum posts by other people having problems with this app, it looks like the developers usually provide the manual download links if the customer requests them. It may be worth contacting Embertone to see if they provide the direct download links. If so, no need to resort to Windows. There is still hope for us Linux users :D . Anyway, I moved the downloaded files to my Linux partition. However, now I'm struggling with Kontakt Player. Any chance it can work without JACK+Wineasio? I'm on a multilib 64-bit system but still don't have 32-bit JACK nor Wineasio. Kontakt Player installed fine, but I'm stuck on the audio setup screen. There's "Wasapi (Shared mode)" as the only audio driver, status says "stopped", my onboard soundcard appears on the dropdown list, my MIDI ports get recognized, but no matter what is done, it complains that I need to set a "valid" audio interface... I don't know what's happening. Wine plays sounds from other apps just fine. Can't it work with the default driver, without JACK and Wineasio (not considering latency or anything yet), or am I missing something else? By what I got from reading their "Getting Started" guide, I can't add libraries if I don't get past this screen... -- ____________________ Blog: http://aiyumi.warpstar.net/

10 years, 6 months

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Linux-audio-user June 2014