Linux-audio-user September 2010

linux-audio-user@lists.linuxaudio.org

150 participants
121 discussions

by Jonathan E. Brickman

I think I am missing some essential understanding of Ardour. I have Ardour set up in default manner (Fedora 13), one Master bus, and have added one track. The input of the one track has been successfully set to Linux Sampler; when I get sound out of LS, the meter in the track moves nicely. However, when I change the metering point in the track from "input" to either "pre" or "post", the meter doesn't move at all. (Obviously there are more consequences too, but this is the boil-down.) There are no plugins in all. Recording does work, the wave data is clearly visible. What am I doing wrong? J.E.B.

15 years, 2 months

[ANN] Drumstick 0.5.0 released

by Pedro Lopez-Cabanillas

Drumstick is a C++ wrapper around the ALSA library sequencer interface using Qt4 objects, idioms and style. ALSA sequencer provides software support for MIDI technology on Linux. Complementary classes for SMF, WRK and OVE file processing are also included. This library is used in KMetronome, KMidimon and KMid2, and was formerly known as "aseqmm". Changes: * OVE file format support, contributed by Rui Fan * Optional RealtimeKit support for MIDI input thread * guiplayer simplified and optimized, with OVE format playback * Build system fixes: using visibility=hidden if it is available, exceptions, static build. Copyright (C) 2009-2010, Pedro Lopez-Cabanillas License: GPL v2 or later Project web site http://sourceforge.net/projects/drumstick Online documentation http://drumstick.sourceforge.net/docs/ Downloads http://sourceforge.net/projects/drumstick/files/

15 years, 2 months

Tuning icecast/ices for low latency

by Julien Claassen

'Owdo again! Now that I've icecast running with ices as a feeder, I wonder, if I can turn down latency. In icecast I set the burst-size to 0 and in ices I set realtime. Still the delay is considereable. Is there any chance of tuning this setup further to reduce latency? If it helps, I will post my ices.xml and my icecast.xml. Kindly yours Julien -------- Music was my first love and it will be my last (John Miles) ======== FIND MY WEB-PROJECT AT: ======== http://ltsb.sourceforge.net the Linux TextBased Studio guide ======= AND MY PERSONAL PAGES AT: ======= http://www.juliencoder.de

15 years, 2 months

Installing Google Voice Chat for Linux on Fedora instead of Debian

by Niels Mayer

Excited to see http://googleblog.blogspot.com/2010/08/call-phones-from-gmail.html , I was quickly disappointed to find the plugin only supported debian and was 32 bit. However, I persevered and got it running on Fedora 12 x86_64 anyways. Solution: http://www.google.com/support/forum/p/chat/thread?tid=10ffe01c3a4779f5&hl=e… Google ought to hire someone that knows about App Development and Linux Audio and Fedora packaging (me?) to make the audio/video experience nicer for it's Linux users. In particular, not just blindly using ALSA devices for input that cannot possibly support audio capture, although I guess I'm a fringe-case since I don't use pulseaudio, since I've got KDE's phonon setup to do the right thing w/r/t all my audio devices, including the ones talking via Jackd. ( http://ccrma-mail.stanford.edu/pipermail/planetccrma/2010-May/016886.html ). Also, not assuming every Linux user runs a debian/ubuntu distro would be helpful as well :-) ---------- Forwarded message ---------- From: Google Help <noreply(a)google.com> Date: Wed, Aug 25, 2010 at 5:13 PM Subject: Re: [Google Chat Help] Linux version now available! To: nielsmayer(a)gmail.com NielsMayer has posted an answer to the question "Linux version now available!": FYI, adventures in Installing google talk on fedora 12 x86_64 Linux installation doesn't distinguish between Fedora/OpenSUSE and Debian/Ubuntu linux systems, so you get a download for the wrong distro: -rw-r--r-- 1 npm npm 6926676 2010-08-25 15:47 google-talkplugin_current_amd64.deb Which can be unpacked via ark(1) or file-roller(1) and contains a file data.tar.gz I installed the plugin for chrome/mozilla 64 bit by doing 132 16:01 cd / 134 16:02 sudo tar xvzf ~/Download/data.tar.gz ./opt/google/talkplugin 151 16:11 cd /usr/lib64/mozilla/plugins ## (or /usr/lib ... for 32 bit) 152 16:11 sudo ln -s /opt/google/talkplugin/libnpgoogletalk64.so /opt/google/talkplugin/libnpgtpo3dautoplugin.so . now, about:/plugins shows the existence of the plugin: Google Talk Plugin (2 files) Version: 1.4.1.0 Name: Google Talk Plugin Description: Version: 1.4.1.0 Version: Priority: 1 Location: /opt/google/talkplugin/libnpgoogletalk64.so Disable MIME types: MIME type Description File extensions application/googletalk Google Talk Plugin .googletalk Name: Google Talk Plugin Video Accelerator Description: Google Talk Plugin Video Accelerator version:0.1.43.3 Version: Priority: 2 Location: /opt/google/talkplugin/libnpgtpo3dautoplugin.so Disable MIME types: MIME type Description File extensions application/vnd.gtpo3d.auto O3D MIME . However, back in gmail. clicking on the "call phone" doesn't work.... Issue: gnulem-230-~/Download> /opt/google/talkplugin/GoogleTalkPlugin /opt/google/talkplugin/GoogleTalkPlugin: error while loading shared libraries: libssl.so.0.9.8: cannot open shared object file: No such file or directory Solving: gnulem-236-/usr/lib> sudo ln -s libssl.so.1.0.0a libssl.so.0.9.8 ## note the plugin seems to rely on 32 bit libraries being installed, which fortunately, ## they are even though I have x86_64 system as i've needed to run other 32 bit binaries... Issue: gnulem-245-~> /opt/google/talkplugin/GoogleTalkPlugin /opt/google/talkplugin/GoogleTalkPlugin: error while loading shared libraries: libcrypto.so.0.9.8: cannot open shared object file: No such file or directory Solving: gnulem-247-~> sudo ln -s /usr/lib/libcrypto.so.1.0.0a /usr/lib/libcrypto.so.0.9.8 gnulem-248-~> /opt/google/talkplugin/GoogleTalkPlugin /opt/google/talkplugin/GoogleTalkPlugin: /usr/lib/libcrypto.so.0.9.8: no version information available (required by /opt/google/talkplugin/GoogleTalkPlugin) /opt/google/talkplugin/GoogleTalkPlugin: /usr/lib/libssl.so.0.9.8: no version information available (required by /opt/google/talkplugin/GoogleTalkPlugin) socket(): Address family not supported by protocol socket(): Address family not supported by protocol restarting chrome... and it ... !!!!!!!!!!!!!!!!!!!!!!!! WORKS !!!!!!!!!!!!!!!!!!!!!!!! testing in a call, I'm using an ALSA device that doesn't have input by default gnulem-253-~> /opt/google/talkplugin/GoogleTalkPlugin /opt/google/talkplugin/GoogleTalkPlugin: /usr/lib/libcrypto.so.0.9.8: no version information available (required by /opt/google/talkplugin/GoogleTalkPlugin) /opt/google/talkplugin/GoogleTalkPlugin: /usr/lib/libssl.so.0.9.8: no version information available (required by /opt/google/talkplugin/GoogleTalkPlugin) socket(): Address family not supported by protocol socket(): Address family not supported by protocol socket(): Address family not supported by protocol ALSA lib pcm_dmix.c:957:(snd_pcm_dmix_open) The dmix plugin supports only playback stream Issue: Given my default ALSA device is a dmix device, I now need to totally rework http://nielsmayer.com/npm/dot-asoundrc.txt to make this all useful.... -- Nielsl http://nielsmayer.com

15 years, 2 months

New Early Music made with Linux

by Giso Grimm

A new Early Music CD has been produced using FLOSS on Linux, mainly Ardour: Sound out my voice - Italian madrigals and bastarda music for viol consort The CD is played by the viol [1] consort "ORLANDOviols". It is commercially available at http://www.orlandoviols.de/, and soon also via amazon (Europe at least). A non-commercial publishing is planned after a while. A video, more or less the making of the CD, is available on youtube: http://www.youtube.com/watch?v=PUx_UIcht2Y The video is completely made with Blender on Linux. Thanks to all the creative people around the Linux Audio World! Giso [1] http://en.wikipedia.org/wiki/Viol

15 years, 2 months

New workstation | DAW pc

by rosea grammostola

Hi, I need a new workstation | DAW pc, would be nice to get some advise. Silent Energy friendly (relative...) Good for audio work Price: 300 - 500 euro 1. Which components are the most important? And which components might be good second hand as well? 2. How many cores, is a dualcore enough, or do I need a quatro core? It would be nice to be able to enjoy the computer in the coming 3 years (I don't know how heavy computing will be in 3 years...) 3. Which computer case? 4. Motherboard 5. Monitor 6. Fans? When I look around, Phenom processor and MSI motherboard are mentioned... Thanks in advance, \r

15 years, 2 months

another AVSynthesis video/audio production

by Dave Phillips

Greetings, What the Subject says: http://www.youtube.com/watch?v=5BkSx2lH3NE A Blur study. Soundtrack made by Noise and FM3Random audio generators with Waveguide and Waveset filters. Best, dp

15 years, 2 months

Re: [LAU] New workstation | DAW pc

by Kjetil S. Matheussen

Kevin Cosgrove: >> > raise the heat of all the rest of the things in the case above them. >> > >> >> I would rephrase that to avoid putting things which are sensitive >> to heat at the top, and avoiding putting things which are hot >> close to things which are sensitive to heat. >> >> Normally you only have to worry about the temperature of the CPU >> the PSU. The other stuff inside an audio-computer >> usually works fine in higher temperature without making >> lots of noise or failing. (at least to a certain degree of corse). > >My seemingly hidden point was that when the hot stuff is at the top, >and the air exit is at the top, then the whole case will run cooler. >A cooler case means the fans can run more slowly. Slower fans mean a >quieter system, and that is good for audio work when the system is in >the room where audio is created or enjoyed. Your point was not hidden, it was wrong. Some of the hot stuff is also the stuff which is sensitive to heat. If you put the CPU and the PSU at the top of the case, they will be heaten up by hard drive, motherboard, etc., and they will cause more noise than if you had putten them at the bottom.

15 years, 2 months

Re: [LAU] New workstation | DAW pc

by Kjetil S. Matheussen

Kevin Cosgrove: > > > On 7 September 2010 at 19:55, david <gnome(a)hawaii.rr.com> wrote: > >> Design a case like a chimney and let the hot air rise on it's own. ;-) > > ... and avoid putting the hottest things at the bottom where they > raise the heat of all the rest of the things in the case above them. > I would rephrase that to avoid putting things which are sensitive to heat at the top, and avoiding putting things which are hot close to things which are sensitive to heat. Normally you only have to worry about the temperature of the CPU the PSU. The other stuff inside an audio-computer usually works fine in higher temperature without making lots of noise or failing. (at least to a certain degree of corse).

15 years, 2 months

envy24 issues

by menno

Hello list, Niels first of all, your redesigned version of Envy24 Control looks pleasing to the eye, thanks for this update! I have a couple of questions that come to mind - i remember with the old version 0.6 i never succeeded in getting any signal from my DAT recorder using S/PDIF in. I must admit i haven't tried it with this version (1.03) - it takes a lot of physical effort from my part to make a connection with cables due to too many hardware fighting for space, but did you do any work in that area as well? Is it worth the try? - looking at the tab Hardware Settings i see a message : IEC958 Input Status, unable to read IEC958 Input Status: No such file or directory What does it need? What can i do? - is it possible to scale the mixer to other dimensions? i would like to have the mixer in sight all the time while doing my work but it would be nicer to be able to resize it to smaller proportions and still seeing all the levels. thank you Menno

15 years, 2 months

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Linux-audio-user September 2010