Linux-audio-dev

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7501 discussions

Re: [LAD] Writing an IEEE 802.1BA (AVB) compliant network backend for Jack2

by Adrian Knoth

On Tue, Apr 05, 2011 at 08:29:03AM -0700, Stephen Hemminger wrote: Just a full quote for the list, I guess Stephen's mail hasn't reached anyone but me due to subscribers-only policy on LAD. > > On 04/05/11 11:53, Christoph Kuhr wrote: > > > > Hi! > > > > > apparently the ASUS 890FX mainboard has a yukon 88e8059 nic, which i > > > have not verified yet. > > > > To be precise, it's only the Crosshair IV Formular 890FX, all others > > either have Realtek or Intel. > > > > > the marvell yukon 88e8059 specs say this nic is avb ready. > > > > Indeed, at least if we believe the little PDF provided by Marvell. > > > > I don't know exactly what this means, it seems they support multiple > > RX/TX queues, so AVB packages might end up in a priority lane while bulk > > traffic is handled via a different queue. > > It has 2 Tx queues, but one is not used because it really doesn't > offer any benefit. The sync Tx queue doesn't fit the Linux > multiple Tx queue model. > > > They also support hardware timestamping. The Linux driver in question is > > sky2, in sky2.h, they already have some PTP related defines, but the > > sky2.c doesn't make use of them. > > The hardware timestamping is also disabled in Linux for a couple > of reasons. First the wraparound of the timestamp is not well > documented, but more importantly timestamping and RSS hash can > not be combined and RSS hash seemed more useful. -- mail: adi(a)thur.de http://adi.thur.de PGP/GPG: key via keyserver

14 years, 2 months

Writing an IEEE 802.1BA (AVB) compliant network backend for Jack2

by Christoph Kuhr

Again its me just another list, apparently the ASUS 890FX mainboard has a yukon 88e8059 nic, which i have not verified yet. the marvell yukon 88e8059 specs say this nic is avb ready. is there anyone who can verify this? bye Ck

14 years, 2 months

ANN: upcoming L2Ork performances and a new pd-l2ork software release

by Ivica Ico Bukvic

Dear Friends and fellow L2Ork and Pd enthusiasts, I would greatly appreciate it if you would please distribute the following announcement. The spring is in the air, which means it is time for the spring DISIS (http://disis.music.vt.edu) and L2Ork (http://l2ork.music.vt.edu) events. To start the season right, this past Friday L2Ork had a sneak preview performance at Roanoke College. More so, this coming weekend we are having a truly special series of events with the return of the Boys & Girls Club laptop orchestra whom we've been working with this semester. In addition, the spring DISIS event will also include guest artists and scholars Ron Coulter, Brad Garton, Peter Kirn, and Dave Phillips. The upcoming events include: Thursday April 7 @ 3:30-4:45pm in DISIS presentation by Brad Garton Friday 10am-1pm lectures in the Arts Armory by Brad Garton, Peter Kirn, and Dave Phillips (free admission) Friday April 8 @ 7pm in Dumas Center (Roanoke, VA) children's concert featuring Boys & Girls Club laptop orchestra and L2Ork Saturday April 9 @ 7pm in Squires Recital Salon children's benefit concert (an Arts Fusion event) featuring Boys & Girls Club laptop orchestra and L2Ork followed by a hands-on laptop orchestra demo session for kids and families ($5 general, $3 children/students/seniors, with all proceeds benefiting Boys & Girls Club) Saturday April 9 @ 8pm in Squires Recital Salon benefit concert (an Arts Fusion event) featuring Ron Coulter, Brad Garton, Peter Kirn, Dave Phillips, and L2Ork ($5 general, $3 children/students/seniors, with all proceeds benefiting Boys & Girls Club) This year we've also partnered up with the Virginia Tech Kids' Tech University program to expand our outreach to young audiences. For additional info on the upcoming events, please visit our Events page or our Facebook Event page (http://www.facebook.com/event.php?eid=136468179758733). To keep up with the latest updates, join us on Facebook (http://www.facebook.com/group.php?gid=117918141555131). As if that weren't exciting enough, earlier this weekend we've made yet another public release of pd-l2ork (http://l2ork.music.vt.edu/main/?page_id=56) with even more cool features and fixes (changelog: http://l2ork.music.vt.edu/data/pd/Changelog). Our site has been also updated with the new promotional materials and photos. Yet, in the spirit of Steve Jobs' keynote speeches we've left the best for last. Stay tuned for more exciting updates soon ;-) For additional info on L2Ork, visit http://l2ork.music.vt.edu. 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, 2 months

Sek'd Prodif 96

by Reid Fletcher

I have a couple of sound adapters labeled Sek'd Prodif 96 They are known to be a good card. However I have been unable to find any drivers for Linux for these. I have not been able to find a Users Manual either. Does anyone have any information regarding these cards? I would like to use them on either an OpenSUSE 11.2 or Ubuntu 10.04 system running Rivendell if possible. __Reid__ Reid Fletcher, WB7CJO

14 years, 3 months

Good Mixer Library

by Gerald Mwangi

Hi, I'm messing arround with the source of TerminatorX. As it seems, tX needs a total rewright of the mixer and the audio backend. Since many programs (Ardour, Qtracktor) have built mixers, I was wondering from which project I could 'borrow' the mixer component. I need a mixermodel which is strictly C++, which idealy has jack support built in, possibly multithreaded, GUI-Independant and easy to handle. I started to wright my own mixermodel, but then I thought how stupid it is to reinvent the wheel. It would really be nice something like a libmixer with jack, lv2, ladspa and VST support. Gerald

14 years, 3 months

Re: [LAD] [ann] CAPS 0.4.5

by Jeff McClintock

> All plugins with the same URI MUST be compatible in terms of 'port > signature', meaning they have the same number of ports, same port > shortnames, and roughly the same functionality. URIs should probably > contain a version number (or similar) for this reason. > > Rationale: When serializing session/patch/etc files, hosts MUST refer > to a loaded plugin by the plugin URI only. In the future loading a > plugin with this URI MUST yield a plugin with the same ports (etc) > which is 100% compatible. Having written a host myself. This is great advice when writing for ANY plugin standard. I go as far as to reject (different) plugins with duplicate URIs to promote this practice Best Regards, Jeff

14 years, 3 months

LAM: Best of 2010 mix - Now online!

by Patrick Shirkey

From the "Better Late than Never Dept"... Announcing the _*Linux Audio Musicians Best of 2010 mix*_ Download and view the full playlist of 116 tracks here: http://djcj.org/audio/lam/ Listen to the continuous radio stream here: http://radio.linuxaudio.org/lam2010.ogg.m3u **************************************************************************** Congratulations!!! to the Artists and Bands that made 2010 a bumper year for well produced and unique music from the Linux Audio Community. This mix is the biggest yet with over 100 tracks included and over 12 hours of music to listen to. A hefty selection of guitar music and rock productions are included in this years mix to complement the large range of electronica. The variation of styles and genres is superb and as expected there was lots of off the wall and challenging music produced during the 2010 period also. The playlist has been ordered in terms of Genre/Style to make it easier to separate the tracks out for those with specific tastes and to ensure the radio stream flows nicely. If you feel that there is a track missing please feel free to contact me with details. This is a snapshot of the year so lets make it as complete as possible. Enjoy! **************************************************************************** -- Patrick Shirkey Boost Hardware Ltd.

14 years, 3 months

Suggestions for new HW

by Fons Adriaensen

Hello all, Yesterday my main home system decided to 'meet its creator'. The power supply sort of exited in a funny way, producing unhealthy odors and some noises. I can still start the HW using a spare PS, but the / filesystem seems beyond repair, with fsck freezing the machine when trying to fix it - never seen that before. Strangely enough I can still mount it and was able to copy some directories from it that were more recent than the last backup. I wonder if it's just the file system being damaged or the disk HW itself. Anyway after 8 years it's probably time for some new HW, and I've been considering one of the 'Shuttle' boxes. Florian Faber already recommended them some time ago, but I wonder if anyone out there can report on them, or offer some advice as to which series to prefer, what to avoid, etc. TIA, -- FA

14 years, 3 months

MIDI maps : C++ functions

by Harry Van Haaren

Hey guys, I'm wondering how to approach creating a MIDI map to all controllers available in the GUI. Needless to say I can hard code in a MIDI CC, and from JACK's process callback call the function that I want to map that control to, but that's a little rigid. I like Ardour's one-click map idea, and I'm wondering how its implemented. Here's what I concluded so far: On mouse_3 down, pop up dialog, send message to JACK process to keep next MIDI input stored somewhere. That's the CC to map Where I'm getting stuck is how to make each CC point to a different "parameter" in the software, or a different function in the code. Function pointers come to mind, but somehow I don't like that idea much. Creating a generic interface to map every control in the entire engine might work, but I think that may be a little overkill? I'd be interested to hear how various projects handles this internally, if anybody wants to chip in? Cheers, -Harry

14 years, 3 months

Re: [LAD] accepted use of sync callback

by Lieven Moors

Sorry to have sent messages to your personal mail adresses. Still have to get used to this... lieven

14 years, 3 months

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