Linux-audio-user February 2010

linux-audio-user@lists.linuxaudio.org

169 participants
129 discussions

Re: [LAU] more than 4 channels for listening? Really?

by Martin Leese

On Thu, 2010-02-25, Bearcat M. Sandor wrote: ... > Couldn't one create the sound of a fly moving through out a room simply > by adjusting the balance of 4 speakers? One could do this, and it was how things were done back in the quadraphonic era. What you are seeking to do is to create phantom images between pairs of speakers, and for this you need a mixing style. "[A]djusting the balance" is called pair-wise mixing and, unfortunately, this doesn't work with surround sound. You can hear this for yourself by performing the very simple experiment described on my website at: http://members.tripod.com/martin_leese/Ambisonic/exper.html Pair-wise mixing is also discussed in the Ambisonic Surround Sound FAQ at: http://members.tripod.com/martin_leese/Ambisonic/faq_latest.html#SECTION12 > If so why do we need more than 4 speakers? If you use an appropriate mixing style, such as Ambisonics, then you don't need more than four speakers (although more is helpful). Regards, Martin -- Martin J Leese E-mail: martin.leese stanfordalumni.org Web: http://members.tripod.com/martin_leese/

14 years, 9 months

Re: [LAU] UA-101

by Ivica Ico Bukvic

OK, thanks to all the hard work by Clemens, the UA-101 finally works (kind of) with Linux. 2.6.31 kernel with audio.h addition to its source (include/linux/usb/ folder) from the 2.6.32 solves the 2.6.32 prerequisite problem associated with the driver. That said, the soundcard works well at 44100 and 48000 but for instance 88200 results in either everything sounding transposed upwards (as if playback rate is doubled), as is the case in Hydrogen, or JACK being zombified when connecting from Pd. Even when left alone (just JACK running), it kills jack within seconds with dmesg output listed below. Messages in qjackctl (apart from zombification) includes tons of: Cannot continue execution of the processing graph (Resource temporarily unavailable) Dmesg: capture rate: 0 0 0 0 0 0 0 0 0 0 usb 1-2: interface reset failed; error -110: unknown error usb 1-2: interface reset failed; error -110: unknown error and occasional: ===>rt_ioctl_giwscan. 6(6) BSS returned, data->length = 647 (numbers before BSS and 647 change) Ico

14 years, 9 months

New Fender Amp

by teza

Fender just release a new incredible amp, which could be use with a pc. Vjdeo here: http://www.mediafire.com/file/yh14e21njhw/01_GDEC3_Intro_600kb.flv Regards Teza

14 years, 9 months

Midipoke 0.1, an XY(Z)-controller for touchpads

by Raine M. Ekman

So, after asking here about MIDI controllers for touchpads a while back I went ahead and made something out of my vision of how it could work. It's a pretty primitive command line X11 program sending ALSA MIDI. X, Y and Z axes can be mapped to controllers or pitch bend and 2-fingered touch can also be used as an on/off switch for hold pedal, portamento or whatever. For now there is only source to download, but as there aren't very many dependencies it shouldn't be much of a hurdle to compile and run. Bug reports and improvements are welcome. You'll need a touchpad that works with the Synaptics driver in X to use this, but beware that any driver version and hardware compatibility is quite untested, except for Ubuntu Karmic on Eeepc 901. URLS: http://freshmeat.net/projects/midipoke -- Raine M. Ekman ...... raine(a)iki.fi the Radio Project ... http://www.mikseri.net/artists/?id=36109&displ_lang=en

14 years, 9 months

Music Made With Linux - a bit of Greek sunshine

by Viktor Mastoridis

Long time ago I wanted to post this tune on LAU list, but for one reason or other, I didn't. However, in these v cold days here in England, I thought it might be nice and warming to share the followng tune *http://mastoridis.co.uk/temp/linux/Viktor_Mastoridis-GM.ogg.tar* It's name is GM, which are the initials of my wife's surname, Ginka Mastoridis. It was made last year when she decided to take on my surname, and I felt that this act is an act of honour, I had to react - and so made this little instrumental piece.... Performed on Baglamas (again) as a solo instrument, using Ardour for audio amd Muse for midi, this was my first finished Linux audio production about a year ago. Old-fashioned, classical Greek music style. And for those interested in the 'source code', here's a Frescobaldi/Lilypond produced leadsheet pdf file. http://mastoridis.co.uk/temp/linux/Viktor_Mastoridis-GM-leadsheet.pdf Hope you enjoy the little rays of sunshine that peek throughout this number. --- Viktor Mastoridis --------------------- www.Meditera.co.uk

14 years, 9 months

New latin-prog :-)

by Julien Claassen

Hello everyone! I just finished another piece and it was time... download here: http://juliencoder.de/nama/fazit.ogg or: http://juliencoder.de/nama/fazit.mp3 Or visit the music site: http://juliencoder.de/nama/music.html It was done in honour of the new piano musicaly speaking and in honour of Nama's latest version technically speaking. So thanks Joel! It started out as a latin theme and the rest just gathered, so I tied it all together. Used software; LinuxSampler, Beatrix, Hydrogen and external synth (Korg TR76 and Clavia Nordlead 3). I hope you can enjoy it, as always feedback is very welcome! Kindest regards 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

14 years, 9 months

Moving Audacity project to Ardour

by Leigh Dyer

Hi all, A friend of mine has recorded a multi-track project in Audacity under Windows, and I'd like to take it, bring it in to Ardour, and polish it up, both to help him out, and to convince him of the merits of switching to Linux and Ardour himself. Has anyone done this before? A quick google doesn't turn up any automated tools, but if anyone has done it manually and has some workflow tips they could share, that'd be great. Thanks Leigh

14 years, 9 months

OT: help choosing netbook

by Josh Lawrence

hi list, long story short: had a netbook, decided I needed more power, sold it, got a piece of crap laptop from NewEgg, so bad that the retailer is recalling them, so now I have about $400 to spend in store credit. I need help picking a netbook. specifically, I have no idea what processor to choose, and obviously I want the most processor I can get (for the money). from researching a bit, I see that Intel's N450 processor is their *latest*, but does that mean that it is their *best* of the Atom line? here's one that looked interesting: http://www.newegg.com/Product/Product.aspx?Item=N82E16834152163 and this one, but for more money: http://www.newegg.com/Product/Product.aspx?Item=N82E16834220682 the list goes on and on... basically, I want a great processor and I don't want to get bitten by any outstanding bugs that will mess with jack/realtime/etc. performance. suggestions, gripes, flames, etc. are welcome. :) if it matters, it will run debian squeeze. -- Josh Lawrence http://www.hardbop200.com

14 years, 9 months

Postfish & Beaverphonic

by Sampo Savolainen

Quoting "Monty Montgomery" <xiphmont(a)gmail.com>: > My EQs: Audacity (though what's there now has morphed since and is > known to be buggy from a few one-off bugs), Postfish and Beaverphonic > (this is a specialty application). I've never heard of these. Do you have more information on them? I coudn't find anything on beaverphonic and the SVN version I found of postfish seemed to not co-operate with my system very well. Why no jack support / how to enable jack support? Sampo

14 years, 9 months

Cooking with Gas

by Folderol

This is a set of ZynAddSubFX tutorials produced by the man himself. I can recommend them all, and be prepared to be amazed :O http://www.youtube.com/user/zynaddsubfx -- 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, 9 months

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Linux-audio-user February 2010