Linux-audio-user November 2007

linux-audio-user@lists.linuxaudio.org

131 participants
119 discussions

by lanas

Folks, In order to connect the stereo audio output (1/4" unbalanced) of a M-Audio Prokeys 88 keyboard to an 1010LT card, is only a 1/4" to two RCA jacks splitter needed ? Will that give good results or is there some kind of adapter device that's needed in the path to the sound card inputs ? Thanks, Al

17 years

chrt doesn't seem to be working

by Ken Restivo

I'm having a bit of difficulty getting chrt to, um, chrt. I've written a little MIDI-processing daemon and I want it to run with high priority. It is very small and tight and I don't expect it to take up much CPU, but I definitely want it running first. So I do this: sudo /usr/bin/chrt -f -p 81 `pidof mydaemon` And then I do this: ps -Leo pid,class,rtprio,ni,pri,pcpu,stat,comm --sort -rtprio And... my daemon does *not* show up in the process list at all. Is there some other special magick I must do from within the daemon itself in order to even get it *considered* to be a RT process? i.e. must I call sched_prio functions from within the process itself? -ken

17 years

creative commons license

by Julien Claassen

Hi everyone! I've got a question about the terms, because I'm a bit unsure. I've looked into their sample plus 1.0 license: http://creativecommons.org/licenses/sampling+/1.0/legalcode And what I wonder is: Do I have to mention the author of a sample, its source and a ccpl-reference, if I use a modified sample in a song of mine, which may integrate into a commercial project? Can anyone help me in a jiffy? If not, I'll try to investigate it some more. 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

17 years

jackd @ startup

by 2g

i feel like a fool whenever i do jackd -R -dalsa -S at the beginning of everyday's routine.. so am about to put it somewhere at startup on both fluxbox http://www.flickr.com/photos/pantaloon_thangs/2047585591/ and gnome http://www.flickr.com/photos/pantaloon_thangs/2046303485 then ./fluxbox/startup and the preference>session>startup is the right place to edit? but i also wonder if there is an issue that i'd better get aware of befor going this way maybe flash things will loose sound when in firefox? on fluxbox i think i'll go 1 workspace per 1 app having jackd done only in one workspace would be a trouble? i got both gnome and fluxbox via Ubuntu7.10 onto Dell's Optiplex GX150 -- 2g http://micro.ispretty.com

17 years

how to edit MIDI by applying selection rules?

by Hector Centeno

Hi, Some days ago I was working on a MIDI project that required selecting a large group of notes and transposing them. The notes to be selected were short notes alternating with long ones. Using Rosegarden the only way of doing it was to shift-click (in piano roll) on the short notes which became impossible since sometimes clicking on the short note would also select the long one next to it. Also if I made a mistake I had to start over again since in Rosegarden (ver. 1.5.1 at least) you can't unselect a note from a group of already selected notes. Even if it was possible to shift-click on each note without problems it would require a lot of time. So, my question is: are there any open source MIDI editing tools that would allow me to do something like this quickly? This kind of tasks are easy to accomplish in other proprietary softwares using filtered selection by creating your own set of selection rules and applying it to a MIDI region or track (like: select all notes between such and such duration). Is there anything like this for Linux? Any command line MIDI editing tools already around? In other cases it would be nice to edit groups of notes selected by pitch or velocity. Thanks! Hector

17 years

linuxsampler problem

by Julien Claassen

Hi! I still have trouble with LS. I now installed the latest versions of the complete package (libgig, liblscp and linuxsampler). Still when I try to create four audio_drivers, attach them each to a single channel and load an instrument into each channel, the LinuxSampler server gets killed. The script I use: ------------------- CREATE AUDIO_OUTPUT_DEVICE JACK CREATE AUDIO_OUTPUT_DEVICE JACK CREATE AUDIO_OUTPUT_DEVICE JACK CREATE AUDIO_OUTPUT_DEVICE JACK CREATE MIDI_INPUT_DEVICE ALSA ADD CHANNEL ADD CHANNEL ADD CHANNEL ADD CHANNEL LOAD ENGINE GIG 0 LOAD ENGINE GIG 1 LOAD ENGINE GIG 2 LOAD ENGINE GIG 3 SET CHANNEL AUDIO_OUTPUT_DEVICE 0 0 SET CHANNEL AUDIO_OUTPUT_DEVICE 1 1 SET CHANNEL AUDIO_OUTPUT_DEVICE 2 2 SET CHANNEL AUDIO_OUTPUT_DEVICE 3 3 SET CHANNEL MIDI_INPUT_DEVICE 0 0 SET CHANNEL MIDI_INPUT_DEVICE 1 0 SET CHANNEL MIDI_INPUT_DEVICE 2 0 SET CHANNEL MIDI_INPUT_DEVICE 3 0 LOAD INSTRUMENT "dfh/cDFH.gig" 0 0 LOAD INSTRUMENT "dfh/cDFH.gig" 4 1 LOAD INSTRUMENT "dfh/cDFH.gig" 14 2 LOAD INSTRUMENT "dfh/cDFH.gig" 16 3 SET CHANNEL VOLUME 0 1.2 SET CHANNEL VOLUME 1 1.0 SET CHANNEL VOLUME 2 0.8 SET CHANNEL VOLUME 3 0.9 ------- The error I get on the telnet side: ------------------- Normal per-cpu: CPU 0: Hot: hi: 186, btch: 31 usd: 30 Cold: hi: 62, btch: 15 usd: 52 Active:64241 inactive:59851 dirty:0 writeback:0 unstable:0 free:1017 slab:1850 mapped:6025 pagetables:328 bounce:0 DMA free:2036kB min:88kB low:108kB high:132kB active:4340kB inactive:4412kB pres ent:16256kB pages_scanned:14624 all_unreclaimable? yes lowmem_reserve[]: 0 492 492 Normal free:2032kB min:2792kB low:3488kB high:4188kB active:252496kB inactive:23 5120kB present:503876kB pages_scanned:829541 all_unreclaimable? yes lowmem_reserve[]: 0 0 0 DMA: 1*4kB 0*8kB 1*16kB 1*32kB 1*64kB 1*128kB 1*256kB 1*512kB 1*1024kB 0*2048kB 0*4096kB = 2036kB Normal: 0*4kB 0*8kB 1*16kB 1*32kB 1*64kB 1*128kB 1*256kB 1*512kB 1*1024kB 0*2048 kB 0*4096kB = 2032kB Swap cache: add 232964, delete 119486, find 831/1156, race 0+0 Free swap = 0kB Total swap = 489972kB Free swap: 0kB 131056 pages of RAM 0 pages of HIGHMEM 2405 reserved pages 10933 pages shared 113478 pages swap cached 0 pages dirty 0 pages writeback 6025 pages mapped 1850 pages slab 328 pages pagetables ------------ On the LinuxSampler-side I just get Killed. Is there a way to avoide this? 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

17 years

Error when system tries to insert snd-intel8x0

by david

Whenever my system tries to insert the snd-intel8x0 module, it fails with this error reported by dmesg: snd_intel8x0: Unknown parameter `vid' Where could that parameter be coming from? Using Debian, I've checked /etc/modules, /etc/modprobe.d and every other place I can think of. Any clues? We will ignore for now the fact that I'm doing all these via Fluxbox because KDE decided it can't find kdeinit after I did my usual weekly system update ... grrr. -- David gnome(a)hawaii.rr.com authenticity, honesty, community

17 years

LAU collaboration coordination?

by Martin Ahnelöv

lör 2007-11-17 klockan 00:34 -0500 skrev Frank Pirrone: > I forgot what I spewed in that last message, Cloud, Strangers, Ghost, > whatever, but here's some more stream-of-consciousness within the > context of an international virtual band: > > United Notions > Virtualosity > No Band > Streaming Dada > Interplanetary Relations > Net Noise > S/N Ratio > Bandwidth > ...whatever... How about "netband"? (any capitalisation you like.) A play with the nethack-game. netband is to bands what nethack is to hack. =) Gasten

17 years

Playing a wav file from stdin in JACK?

by Ken Restivo

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I'm looking for a way to play a wav file from STDIN that'll work with JACK. mplayer -ao jack (or just mplayer without JACK) won't handle WAV files on stdin, for some reason. Cannot seek backward in linear streams! Seek failed sox "play" won't work with JACK at all, nor does it appear to play from stdin anyway. I need to do this because I'm playing wavpack'ed files: I need to do "wvunpack -o - filename.wv | SOMETHING - ". I do *not* want to have to unpack them to disk just to play them. - -ken -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFHPk1Je8HF+6xeOIcRAmgDAJwPqPpwX+OV+pYMh0buraDR/n+0uwCg6ajX 2oXFwH10oQ9q1po6r2PYAEs= =wISQ -----END PGP SIGNATURE-----

17 years

Re: [LAU] LAU collaboration coordination?

by arisstotle.54695488＠bloglines.com

has anyone considered using ardour session exchange with flac audio?

17 years

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Linux-audio-user November 2007