Linux-audio-user November 2009

linux-audio-user@lists.linuxaudio.org

160 participants
143 discussions

Re: [LAU] Am I experiencing ground hum or is it something else?

by Andrew C

Hey Fons, How can I check if the keyboard/power supply is grounded? The power supply itself is a three pronged one.... Thanks. Andrew. On Sun, Nov 29, 2009 at 3:55 PM, <fons(a)kokkinizita.net> wrote: > On Sun, Nov 29, 2009 at 03:16:33PM +0000, Andrew C wrote: > > > I'm just wondering, is the start of this short recording a ground hum > > loop? It appears to be a weird high pitched whine in there as well... > > 325.3 Hz and harmonics, either from digital circuits in your > keyboard, or from a switching power supply. > > Is the keyboard itself grounded ? If not try that first (if > it has a ground pin...) > > > Could a DI box solve this problem? > > One that provides ground separation (i.e. with > a transformer) probably will. > > Ciao, > > -- > FA > > Io lo dico sempre: l'Italia è troppo stretta e lunga. > >

14 years, 4 months

[ANN] Jackbeat 0.7.4

by Olivier Guilyardi

Hi everyone, The Jackbeat audio sequencer version 0.7.4 has just been released. Download it from: http://jackbeat.samalyse.org News ~~~~ A bug which may prevent to load samples have been fixed. ChangeLog ~~~~~~~~~ jackbeat (0.7.4) * #43: fix buffer overflow in sample file filter building routine Enjoy -- Olivier

14 years, 4 months

OSX apps (Berna)

by Josh Lawrence

OK, I've been seeing mention of this: http://www.gleetchplug.com/Gleetchplug/berna.html Looks super-cool, but there's no Linux version. The OSX people have tools for compiling Linux applications on their platform, can we (Linux users) do anything to run Mac apps on Linux? -- Josh Lawrence http://www.hardbop200.com

14 years, 4 months

FOSS Ethernet Soundcard

by Folderol

Recent discussion on LAU morphed into an idea for an Ethernet driven sound card, and as this is now becoming a real development the suggestion was made that it would be better to transfer the discussion here. The rationale in brief: No proprietry hardware soundcard needed. Almost all modern computers have reasonably fast Ethernet connections. Potentially up to 20 channels per card - reality will probably be a lot different! FOSS drivers to connect Ethernet to whatever audio server is on the computer - looking at jack right now. FOSS within the soundcard module so that protocols/algorythings can be tuned for best results. FOSH design enabling hardware to be developed and inproved by anyone. A number of people have shown interest in this, and we are at the stage of starting to knock together some basic hardware for a feasibility study. State of play: On Mon, 23 Nov 2009 14:39:48 +0100 (CET) karl(a)aspodata.se (Karl Hammar) wrote: > Folderol: > > On Sat, 21 Nov 2009 12:25:36 +0100 (CET) > > karl(a)aspodata.se (Karl Hammar) wrote: > > > > <snip> > > > > > Would this project plan be ok: > > > > > > software and hw: Karl > > > testing and spec's: Folderol > > > publication via web: anyone?? > > > > > > git repo: git://aspodata.se/openhw.git > > > mailing list: hopefully this list, else I put one up at my site > > > web site: ?? > > > > > > intial platforms (both by Atmel): > > > . ATNGW100 (cheap), and > > > . AT91SAM9260-EK (expensive) > > > > > > Next step: > > > . set up development platform > > > . simple test with spi and shift registers > > > > > > Regards, > > > /Karl > > > > This is all fine by me, but I would make quite clear that if someone > > comes along with access to a {loadsamoney} spectrum analyser I'd be > > perfectly happy to step back and take a more supporting role. > > Ok, I should get starting then. > > Regards, > /Karl Others would be welcome to come on board - pardon the pun! -- Will J Godfrey http://www.musically.me.uk Say you have a poem and I have a tune. Exchange them and we can both have a poem, a tune, and a song.

14 years, 4 months

L2Ork Debut Performance at Virginia Tech

by Ivica Ico Bukvic

Dear fellow Linux enthusiasts and consortium members, Please allow me to bring to your attention the upcoming L2Ork debut: On December 4th Virginia Tech DISIS (<http://disis.music.vt.edu>) Linux Laptop Orchestra (L2Ork, <http://l2ork.music.vt.edu>) will hold its first sneak preview debut performance on Virginia Tech (VT) campus, Squires Studio Theatre, starting at 7pm. Admission is free. At noon on the same day, L2Orkists will also host a demo booth outside the Commonwealth Ballroom in Squires Student Center (VT campus) demoing how L2Ork works. For additional info on L2Ork and a video preview of L2Ork in rehearsal: <http://l2ork.music.vt.edu> Facebook Event Page: <http://www.facebook.com/home.php#/event.php?eid=180832548428&ref=mf> Sincerely, Ivica Ico Bukvic, D.M.A. Composition, Music Technology Director, DISIS Interactive Sound & Intermedia Studio 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, 5 months

thanks for Yoshimi

by Jonathan E. Brickman

Cal, a great thankfulness goes from me to you for Yoshimi :-) J.E.B.

14 years, 5 months

Hmmm - do they work with Linux?

by david

The Eigenharps http://www.eigenlabs.com/ -- David gnome(a)hawaii.rr.com authenticity, honesty, community

14 years, 5 months

Re: [LAU] props to Atte!

by Atte André Jensen

Gabriel M. Beddingfield wrote: >>> http://music.modlys.dk/track/laengere-vaek > I like it! The chorus melody and swirling pads really stand out. Thanks! -- Atte http://atte.dk http://modlys.dk

14 years, 5 months

[Ardour FLOSS Manual] Day Four: To Do

by Derek Holzer

Day Four is upon us! We're entering the home stretch! Thanks to all the online folks who dropped by the FLOSS Manuals site last night to ask questions and help out--such as Janet Swisher, Matteo Cortes, Joern Nettingsmeier, Christopher Stamper, and in particular Peter Lutek, Bruno Ruviaro and David Elwel, who all did a lot of proofreading and corrections! Thus far, the structure of the manual is posted below. Some things will be moved from chapter to chapter as well, so it would be a good idea to look over all the chapters before starting in on an Incomplete section. The manual can be read and edited at: http://en.flossmanuals.net/bin/view/Ardour/WebHome Thanks again for your interest and time! Best from Rotterdam, Derek ps...pls reply direct or CC me, I'm not monitoring all mailing lists this week! *** ARDOUR FLOSS MANUAL TABLE OF CONTENTS INTRODUCTION Introduction (To be proofed) AboutThisManual (Incomplete) WhatIsDigitalAudio (To be proofed) INSTALLATION ArdourOSX (To be proofed) InstallingJackOSX (To be proofed) Ubuntu (To be proofed) Linux (To be proofed) GETTING STARTED StartArdourOSX (To be proofed) StartArdourUbuntu (To be proofed) StartJackOSX (To be proofed) StartJackUbuntu (To be proofed) StartUtilityAudioMidiSetupOSX (To be proofed) InterfaceOverview (incomplete) STARTING SESSIONS StartSession (To be proofed) SetupTimeline (Incomplete) CreateATrack (To be proofed) ImportAudio (To be proofed) RecordingAudio (To be proofed) UnderstandingRouting (To be proofed) EDITING SESSIONS WorkingWithRegions (To be proofed) StretchingShrinkingRegions (To be proofed) RegionsRightClickOperations (To be proofed) UsingRanges (To be proofed) UsingMixerStrip (To be proofed) UsingMixerStripII (To be proofed) CreatingLoopedSections (To be proofed) MIXING SESSIONS UsingSendsAndInserts (To be proofed) UsingPlugIns (To be proofed) MixingTracks (Incomplete) UsingAutomation (To be proofed) EXPORTING SESSIONS ExportRegion (Incomplete) ExportRange (Incomplete) ExportSession (Incomplete) SAVING SESSIONS SaveSession (Incomplete) SaveSnapshot (Incomplete) SaveTemplate (Incomplete) APPENDICES Glossary (Incomplete) Links (Needs Layout) Credits (Unpublished) InstallingOnUbuntu (Hold) *** KEY TO ABOVE: Incomplete = little or no content, significant writing necessary To be proofed = substantial amount of content, should be reviewed and corrected or added to as needed Needs Layout = content considered complete, needs HTML formatting to remove excess tags etc etc Unpublished = default tag Hold = will not be included, usually because the content has been moved someplace else

14 years, 5 months

Midi sound Snafu

by J.

B.H. Hi, Could anyone help me to get midi sound on a computer that I'm setting up for a freind woh has to use Linux and is not able to set up now by himself? Problem (1): Before I upgraded to kubunyu 9.1 (from 9.0.?) I was able to hear midi by playing the virtual keyboard; now it doesn' play. I have connected a usb midi controler and I see midi activity in Rosegarden but no sound. What do I do. Problem (2): My friend told me how to set up a bash file (or whatever it's called) to start Jack and it starts on the command line. But I'm a command line dummy amd I can't type So I would like to know how to set up Jack through ths jack controle graphically. And -could it be - that all the startup connection stuff on the graphic controle has to do with the no-sound I get? Hopefully Jonnie

14 years, 5 months

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Linux-audio-user November 2009