Linux-audio-user December 2010

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152 discussions

Linux Audio Monthly Round-Up #5 – December 2010

by Jeremy Jongepier

Dear all, A bit late because of the Holidays here in the Netherlands, but it's here nonetheless, the Linux Audio Monthly Round-Up #5. Again I had some really positive feedback which is very gratifying of course and it powers the drive to continue writing these round-ups. Back to business, what was November all about? Best, Jeremy http://linuxaudio.org/node/124

14 years, 10 months

L2Ork seeking additional performance opportunities in Berlin and Paris

by Ivica Ico Bukvic

Apologies for cross-posting. Linux Laptop Orchestra or (L2Ork) is currently in the final stages of planning its debut European tour. While most venues have been already arranged for we are currently in the process of seeking additional performance opportunities in Paris, France as well as Berlin, Germany. Our target dates are May 17-31, 2011 with anticipated stops in Ljubljana, Budapest, Linz, Berlin, Hamburg, Utrecht, Amsterdam, Paris, and Birmingham. If anyone is aware of potential venues in Paris and Berlin and/or contacts that may be able to point us in the right direction, I would greatly appreciate it if you would please email me at your earliest convenience. For additional info on L2Ork please visit http://l2ork.music.vt.edu/main/ Thank you very much! Best wishes, Ivica Ico Bukvic, D.M.A. Composition, Music Technology Director, DISIS Interactive Sound & Intermedia Studio Director, L2Ork Linux Laptop Orchestra Assistant Co-Director, CCTAD CHCI, CS, and Art (by courtesy) Virginia Tech Dept. of Music - 0240 Blacksburg, VA 24061 (540) 231-6139 (540) 231-5034 (fax) ico(a)vt.edu http://www.music.vt.edu/faculty/bukvic/

14 years, 10 months

Fluxbox configuration (keys)

by rosea.grammostola

Hi, You probably know that Fluxbox is pretty good for working with audio. Light and extremely configurable. Inspired by the Xmonad default settings for key binding http://haskell.org/haskellwiki/Image:Xmbindings.png, here is a 'keys' file which may help you to set up your Fluxbox configuration. And maybe you are able to give some suggestions and tips to make the file better or to help improve the workflow. It's not about the exact keybindings but more about the 'concepts' in it. Regards, \r # click on the desktop to get menus OnDesktop Mouse1 :HideMenus OnDesktop Mouse2 :WorkspaceMenu OnDesktop Mouse3 :RootMenu # scroll on the desktop to change workspaces OnDesktop Mouse4 :PrevWorkspace OnDesktop Mouse5 :NextWorkspace # scroll on the toolbar to change workspaces OnToolbar Mouse4 :PrevWorkspace OnToolbar Mouse5 :NextWorkspace # alt + left/right click to move/resize a window OnWindow Mod1 Mouse1 :MacroCmd {Raise} {Focus} {StartMoving} OnWindow Mod1 Mouse3 :MacroCmd {Raise} {Focus} {StartResizing NearestCorner} # middle click a window's titlebar and drag to attach windows OnTitlebar Mouse2 :StartTabbing # double click on the titlebar to shade OnTitlebar Double Mouse1 :Shade # right click on the titlebar for a menu of options OnTitlebar Mouse3 :WindowMenu # alt-tab Mod1 Tab :NextWindow {groups} Mod1 Shift Tab :PrevWindow {groups} # cycle through tabs in the current window Mod4 Tab :NextTab Mod4 Shift Tab :PrevTab # go to a specific tab in the current window Mod4 F1 :Tab 1 Mod4 F2 :Tab 2 Mod4 F3 :Tab 3 Mod4 F4 :Tab 4 Mod4 F5 :Tab 5 Mod4 F6 :Tab 6 Mod4 F7 :Tab 7 Mod4 F8 :Tab 8 Mod4 F9 :Tab 9 # open a terminal Mod4 Shift x :ExecCommand xterm +sm Mod4 Shift t :Exec konsole # open a dialog to run programs Mod1 F2 :Exec fbrun # volume settings, using common keycodes # if these don't work, use xev to find out your real keycodes 176 :Exec amixer sset Master,0 1+ 174 :Exec amixer sset Master,0 1- 160 :Exec amixer sset Master,0 toggle # current window commands Mod4 Shift c :Close Mod4 Shift z :KillWindow Mod4 Shift a :CloseAllWindows #move windows Mod4 Shift j :MoveLeft 10 Mod4 Shift l :MoveRight 10 Mod4 Shift m :MoveDown 10 Mod4 Shift i :MoveUp 10 Mod4 F9 :Minimize #Mod1 F10 :Maximize Mod4 space :Maximize Mod4 F11 :Fullscreen # open the window menu Mod1 space :WindowMenu # exit fluxbox Mod4 Shift q :Exit Mod4 Shift r :Reconfigure Mod4 Shift s :Restart #Control Mod1 Delete :Exit Mod4 Shift Delete :Exec xterm -e sudo shutdown -h now Mod4 Shift Escape :Exec xterm -e sudo reboot #showdesktop Mod4 Shift d :ShowDesktop #cpuscaling on performance Mod4 Shift p :Exec xterm -e sudo cpufreq-set -g performance Mod4 Shift o :Exec xterm -e sudo cpufreq-set -g ondemand Mod4 Shift y :Exec xterm -e sudo cpufreq-set -g conservative #hal polling Mod4 Shift h :Exec xterm -e sudo hal-disable-polling --device /dev/scd0 Mod4 Shift e :Exec xterm -e sudo hal-disable-polling --enable-polling --device /dev/scd #Suggestion: Disable the unused bluetooth interface with the following command: #Mod4 Shift b :Exec xterm -e sudo hciconfig hci0 down #Bluetooth is a radio and consumes quite some power, and keeps USB busy as well. # change to a specific workspace Mod4 1 :Workspace 1 Mod4 2 :Workspace 2 Mod4 3 :Workspace 3 Mod4 4 :Workspace 4 Mod4 5 :Workspace 5 Mod4 6 :Workspace 6 Mod4 7 :Workspace 7 Mod4 8 :Workspace 8 Mod4 9 :Workspace 9 Mod4 10 :Workspace 10 Mod4 11 :Workspace 11 Mod4 12 :Workspace 12 # send the current window to a specific workspace Mod4 Shift 1 :SendToWorkspace 1 Mod4 Shift 2 :SendToWorkspace 2 Mod4 Shift 3 :SendToWorkspace 3 Mod4 Shift 4 :SendToWorkspace 4 Mod4 Shift 5 :SendToWorkspace 5 Mod4 Shift 6 :SendToWorkspace 6 Mod4 Shift 7 :SendToWorkspace 7 Mod4 Shift 8 :SendToWorkspace 8 Mod4 Shift 9 :SendToWorkspace 9 Mod4 Shift 10 :SendToWorkspace 10 Mod4 Shift 11 :SendToWorkspace 11 Mod4 Shift 12 :SendToWorkspace 12 # send the current window and change to a specific workspace #Control Mod4 F1 :TakeToWorkspace 1 #Control Mod4 F2 :TakeToWorkspace 2 #Control Mod4 F3 :TakeToWorkspace 3 #Control Mod4 F4 :TakeToWorkspace 4 #Control Mod4 F5 :TakeToWorkspace 5 #Control Mod4 F6 :TakeToWorkspace 6 #Control Mod4 F7 :TakeToWorkspace 7 #Control Mod4 F8 :TakeToWorkspace 8 #Control Mod4 F9 :TakeToWorkspace 9 #Control Mod4 F10 :TakeToWorkspace 10 #Control Mod4 F11 :TakeToWorkspace 11 #Control Mod4 F12 :TakeToWorkspace 12 Control Mod4 1 :TakeToWorkspace 1 Control Mod4 2 :TakeToWorkspace 2 Control Mod4 3 :TakeToWorkspace 3 Control Mod4 4 :TakeToWorkspace 4 Control Mod4 5 :TakeToWorkspace 5 Control Mod4 6 :TakeToWorkspace 6 Control Mod4 7 :TakeToWorkspace 7 Control Mod4 8 :TakeToWorkspace 8 Control Mod4 9 :TakeToWorkspace 9 Control Mod4 10 :TakeToWorkspace 10 Control Mod4 11 :TakeToWorkspace 11 Control Mod4 12 :TakeToWorkspace 12 #start system applications #Mod4 p :Exec 0dmenu Mod4 p :ExecCommand `dmenu_path | dmenu` && eval “exec $exe” Mod1 t :Exec thunar #Mod1 s :Exec konsole #start audio apps Mod4 q :Exec qjackctl Mod4 a :Exec ardour2 Mod4 h :Exec hydrogen Mod4 c :Exec patchage #Mod4 m :Exec 0a2jmidid Mod4 m :ExecCommand a2jmidid -e #Mod4 u :Exec thun #start desktop apps Mod4 k :Exec konversation Mod4 t :Exec icedove Mod4 f :ExecCommand java -jar ~/Fantasia-0.9.jar Mod4 i :Exec iceweasel Mod4 w :Exec kwrite Mod4 d :Exec dolphin Mod4 n :Exec wicd-client Mod4 l :Exec xterm +sm -hold -e linuxsampler #kill Mod4 Shift u :ExecCommand killall jackd #open terminal + commands Mod4 Shift w :Exec xterm -hold -e wmctrl -l & Mod4 Mod1 j :Exec xterm +sm -hold -e jackd -d firewire Mod4 Mod1 k :Exec xterm +sm -hold -e jackd -d firewire -p 128 Mod4 Mod1 l :Exec xterm +sm -hold -e jackd -d firewire -p 64 #kill Mod4 Control k :ExecCommand killall jackd

14 years, 10 months

OT(ish): Connecting balanced out to line in

by James Stone

I have a DI box which has an XLR balanced output. I want to connect it to my cheapo sound card (SBLive) through the (stereo) line in. Is this possible? What would be the best way? Would a mono jack:XLR converter be OK?

14 years, 10 months

phasex's site down

by Renato

is phasex's site down or is it only me? http://www.sysex.net/phasex/

14 years, 10 months

Re: [LAU] edirol fa101 on differant rate that 48k ?

by Thomas Hedegaard

2010/11/18 Florian Faber <faber(a)faberman.de> > Thomas, > > > Im not very into this stuff, but you can certainly hear the difference. > > This is, with all due respect, bullshit. On the technical side, there is > no difference, just a waste of bandwidth. > > Of course a higher SR gives better sound. Wich you can easily hear if you use your ears. There is a reason to use 44.1k and not 8k on CD for ex. And there is a reason for listening to LPs instead of CDs > If you eq in 44.1k you get that early nineties techno high end. > > If you hear differences, your filters and/or converters are broken. > > Maybe the plugins I use are crappy. But nevertheless if you raise a level in a digital eq it makes good sense that it distorts because you move the points away from each other and thus making the wave more of a square? > > Flo > -- > Machines can do the work, so people have time to think. > public key DA43FEF4 x-hkp://wwwkeys.eu.pgp.net >

14 years, 10 months

No joy with AVlinux

by Batz

Y-ellow All. OK. need some help here. I regret to say that I'm not getting much mileage out of AVlinux. I haven't felt quite like throwing a computer out the window, since Turtle Beach first started making sound cards. Well, OK, It's not quite that bad but it's certainly reminiscent. Ah them were the days... However I think my days of experiments in computer aerodynamics are behind me. :) I hope. I'm not even quite sure what questions to ask at this point. There is so much not working properly. It all seems quite hopeless. So ultimately; I need to know if I am wasting my time or should I persist? Should I move on and try a different distro? Though I actually like the distro it self. The test bed is fairly simple... 2.8 gig P4 1 gig RAM Hoontech DSP124 (Envy24) sound card. Evolution MK249 USB keyboard. The final system will be different to this but this will have to do as a proof of concept. All of which appears to work in and of it self. For the most part, software will either connect to MIDI or Audio but not both. All except for that little drum machine thing. Hydrogen? I get sound and MIDI but it Xruns and crashes regularly. I'm not so much worried about the Xruns at this point. There are bigger issues. Linux sampler only works as a Zynjacku plug in. Except that Zynjacku's MIDI comes up in the MIDI tab of JACK. Everything else comes in under the ALSA tab. Which means there's no way to connect to it. Or no obvious way. Yoshimi looked really interesting. It looks as though you can use samples as oscillators which could be what I'm after. Except that as above, I can't connect MIDI into it. And even when using the little keyboard applet/window, it crashes a lot. Usually it takes JACK out as well. To the point of requiring a reboot. Because the frozen windows lock themselves and I can't kill them. And JACK won't connect anything after that. I guess I could find the process and kill it. I can't see that being very helpful up on stage in front of an audience though. And the last time it crashed, it seems to have crashed permanently. Yoshimi will load and lock it self and that's all. Perhaps the recording apps work well. I don't know. I'm not set up to test that. And this is not my current focus. So anyway, if any of this sound familiar and is easily fixed then I'd be over the moon to hear about it. Or alternatively, should I move on to try another distro? Thanks in advance. Be absolutely icebox. _ __ _ | "_ \ | | batzman-lau(a)all-electric.com | |_)/ __ _| |_ ____ _-_|\ | _ \ / _` | __|___ | / \ | |_) | (_| | |_ / / \_.-*_/ |_,__/ \__,_|\__|/ / v / ,__ Goodfortune |_____| http://all-electric.com

14 years, 10 months

100% Linux stuff: The Infinite Repeat - Unaware of a Direction

by Jeremy Jongepier

LS, For the moment I consider this track finished. Well, finished as in that it sounds much like I want it to. When Qtractor 0.4.7 came out I decided I had to let myself go concerning effects, especially now they can be MIDI controlled which is just great. I set up a special FX automation MIDI track and off I went. The female vocals were done by my girlfriend. Just a few takes and she was greatly unsatisfied but with some effects and some cutting up it turned out quite ok. Huge shout out to Will J Godfrey (aka Folderol) for his amazing instrument bank, I used Warm Synth, Sharp Synth, Pizzicato Strings and the great Wind and Surf for the swooossssshhh. Also big props for Cal for the ever improving Yoshimi. And Rui of course. Qtractor just rocks. Lastly, the FFADO folks. I'm now looking at my shiny and new Focusrite Saffire Pro 40 that has been running happily for hours now at 4ms with about 20+ tracks and about the same amount of effects. Yeah, I encountered some occasional xruns, but basically that only happens when I open stuff like LV2 gui's or change hefty instrument patches with Yoshimi (which will be a thing of the past once the sqlite3 implementation for the banks has been perfectioned). I'll see if I can do a screencast of this track. Nothing is cooler than seeing those slick Calf plugins do their stuff automatically :) http://linux.autostatic.com/temp/The%20Infinite%20Repeat%20-%20Unaware%20of… http://linux.autostatic.com/temp/The%20Infinite%20Repeat%20-%20Unaware%20of… And yes, I've learned so much in the making of this track. I've never worked with compressors, gates, filters and eq's before and this track was like a playground in which I could all test it out. Best, Jeremy

14 years, 10 months

Music made with linux: Modlys - blomstre som en rosengård

by Atte André Jensen

Hi 2nd sunday of advent, and I made a new version (new melody and music) of the danish christmas carol "Blomstre som en rosengård". http://modlys.bandcamp.com/track/blomstre-som-en-roseng-rd http://atte.dk/download/blomstre_som_en_rosengaard.mp3 Feedback welcome, although I realize this is not most peoples bag :-) -- Atte http://atte.dk http://modlys.dk

14 years, 10 months

Re: [LAU] usb audio interface question

by Atte André Jensen

On 2010-12-07 23:07, Bob van der Poel wrote: > Don't know about your side of the pond ... but Sweetwater has these > for US$149. Don't think you'll do much better for a quality product. I know, but she's not really into quality A/D-converts and stuff, she merely looks at the price tag :-( -- Atte http://atte.dk http://modlys.dk

14 years, 10 months

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Linux-audio-user December 2010