Linux-audio-user October 2007

linux-audio-user@lists.linuxaudio.org

147 participants
141 discussions

by Dave Phillips

Greetings: I want to transfer some vinyl recordings to hard-disk, and the USB turntables look like a neat solution. Any recommended inexpensive units that work well with Linux ? Best, dp

18 years, 1 month

the flacian temporal paradoxon :-)

by Julien Claassen

Hello! I experienced a strange thing, a couple of times now. When I compress a file with flac (either version 1.1.2 or 1.1.4) mplayer says, that they are much longer than they really are. The sound-output is correct and the "real" playingtime is correct as well. But mplayer's time-display is racing. I heard the same from a friend, who had problem with one file only, the rest of the files he compressed in one go were all ok. He said, that some other players refused to even play the strange file. Does anybody know anything? any fixes for this problem? 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

18 years, 1 month

USB device gives wrong data?

by william estrada

Hi group, I think I have found a problem with the USB sound driver? It appears that the current drive returns a x'81' for silence but it should be a x'7f'. When I use my laptop's sound device and record without a mic, I get a file full of x'7f's. If I do the same with my cheap-o USB device I get a file full of x'81's. The sound quality from the laptop is unacceptable, so that is way I want to use the USB device. I have written a recording program that I have a 'silence' filter that filters out segments of dead air. It works with the laptop's sound device but not the USB device. The filter works by remove x'7f's after allowing a selectable amount. I get the results using arecord which does not have the filtering. The USB device is a C -Media Electronics, Inc. I am running FC6. > [root@laptop ~]# lsmod |grep snd > snd_usb_audio 81985 0 > snd_usb_lib 21057 1 snd_usb_audio > snd_rawmidi 28481 1 snd_usb_lib > snd_hwdep 13637 1 snd_usb_audio > snd_ali5451 27853 1 > snd_ac97_codec 99813 1 snd_ali5451 > snd_ac97_bus 6593 1 snd_ac97_codec > snd_seq_dummy 8133 0 > snd_seq_oss 37057 0 > snd_seq_midi_event 11841 1 snd_seq_oss > snd_seq 57009 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi_event > snd_seq_device 12365 4 snd_rawmidi,snd_seq_dummy,snd_seq_oss,snd_seq > snd_pcm_oss 46433 0 > snd_mixer_oss 20545 1 snd_pcm_oss > snd_pcm 80965 4 snd_usb_audio,snd_ali5451,snd_ac97_codec,snd_pcm_oss > snd_timer 26693 2 snd_seq,snd_pcm > snd 58181 140 snd_usb_audio,snd_rawmidi,snd_hwdep,snd_ali5451,snd_ac97_codec,snd_seq_oss,snd_seq,snd_seq_device,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer > soundcore 12193 1 snd > snd_page_alloc 14281 1 snd_pcm Where do I report this 'bug' or how do I fix it? Thanks for your time. Sorry for the multiple posting, not sure where is should have gone. -- William Estrada MrUmunhum(a)popdial.com Mt-Umunhum-Wireless.net ( http://Mt-Umunhum-Wireless.net ) Ymessenger: MrUmunhum

18 years, 1 month

USB M-Audio Audiophile 2496

by Andrew Lewis

Hi there, Well I managed to find Frank's post about the USB audiophile not working on kernel 2.6 all too late: http://64.233.183.104/search?q=cache:wCOf2JHEquYJ:linuxaudio.org/pipermail/… - I got one thinking it would work for some reason. :( *sigh* So it works on 2.4? :/ And are there any good audio-oriented distributions available using 2.4? (preferably one that is still maintained if possible ;)) Best, -AL.

18 years, 1 month

Re: [LAU] USB M-Audio Audiophile 2496

by Andrew Lewis

Hi all, Thx for the responses. > Incidentally, i just checked on the m-audio website and the 2496 is > about half the price of the USB unit. So why buy USB when it's not as > good and more expensive! Because I wanted an external card. ;) > Anyway, I think, in recent 2.6 kernels/ALSA-CVS, a lot of work on > getting this USB card to run was made, so if one is forced to use one, > s/he might be more lucky now and should try the latest and greatest > ALSA and follow the included documentation [1]. But still I would > avoid to buy one if shopping for a new USB card. Heh, Frank, you're a god, thx. :p I will try get a more bleeding edge setup running and see if I can't sort this out. Incidentally I had the same problem on my Gentoo machine and a fresh Ubuntu 7.10 install: in that dmesg showed some complaint about inconsistent number of interfaces/descriptors? I think the Behringer UCA202 would've been a much more sensible buy for me since it's much cheaper and suits my needs perfectly. Oh bother... ;) -AL.

18 years, 1 month

: reacTIVision

by Mysth-R

Hi, Do you know reactable ? http://mtg.upf.edu/reactable/ I found a tutorial to make my own table, using reacTIVision and a webcam. But, reacTIVision don't seems to find my webcam whereas it works with kopete. my device is a logictech quick messenger, and I use the qc-usb-messenger 1.6driver. I am running Fedora 7 with Planet CCRMA. lsusb : [root@localhost ~]# lsusb Bus 005 Device 002: ID 413c:a005 Dell Computer Corp. Bus 005 Device 004: ID 0c0b:b311 Dura Micro, Inc. (Acomdata) Bus 005 Device 001: ID 0000:0000 Bus 002 Device 002: ID 046d:08f0 Logitech, Inc. QuickCam Messenger Bus 002 Device 001: ID 0000:0000 Bus 001 Device 004: ID 046d:c216 Logitech, Inc. Dual Action Gamepad Bus 001 Device 001: ID 0000:0000 Bus 003 Device 001: ID 0000:0000 Bus 004 Device 002: ID 045e:00e1 Microsoft Corp. Bus 004 Device 001: ID 0000:0000 [root@localhost ~]# Can you help me ? :) I would love to make my own table Cheers, Erwan. -- {^_^} Mysth-R {^_^} http://myspace.com/mysthr http://myspace.com/aideauditive

18 years, 1 month

Linux Video Users ?

by Martin Ahnelöv

Hello there! There have been much talk lately about video being way too sparse on the linux platform - which it really is. Since I am very interested in video, and I would love to see it on linux, I think that something have to be done. One thing I think video on linux is lacking most is a strong community. I believe that this is the one thing that could put video on the linux map. The number one thing to accomplish when gathering a community is probably to establish a central place for talk and discussion. I think that a "Linux Video Users"-mailing list would be very good for this purpose. The list would serve as a video-version of the LAA, LAU, and LAD-lists and would intend on improving documentation and cooperation between the different projects (be it editors, encoders, recorders, players, frameworks, etcetera) and their users. Would there be any interest for such list? Could this list (LAU) lend a bit of server-space and gimmick for this project? Sincerely, Gasten

18 years, 1 month

Linux Audio Conference #6 (LAC2008): Reminder: Call for Installations ends tonight!

by Martin Rumori

Dear all, we would like to remind you that the submission deadline for installation proposals for the exhibition at Linux Audio Conference 2008, 28.2.-2.3.2008 at Cologne, ends tonight. Please find the full call for installations below and on the web at http://lac.linuxaudio.org This site also contains all the other calls, which remain open until 1st of december. On behalf of the LAC2008 organisation team, sincerely, Frank Barknecht and Martin Rumori

18 years, 1 month

Need help debugging tcl in Cecilia-2.5

by Robert Persson

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I am trying to get Cecilia 2.5 working in Linux, or failing that, at least to clear some of the bugs out of the way. The first big bug I am trying to deal with is to get the output of sndinfo parsed correctly using tcl. This is difficult because the only tcl I know is what I have learned in the last few hours. The problem is that the sndinfo that ships with csound5 produces very untidy output compared to earlier versions. A whole lot of error messages are jumbled up with various tabs and control characters. The actual information the program is supposed to provide staggers out the pub with the rest of this mess via stderr instead of stdin. tcl just doesn't like this. I have been trying to strip away some of the cruft using tr and a line of perl I found on the web, but these instructions both use characters that have special functions in tcl and I cannot work out how to pass them to these other programs unprocessed. I have no idea how to escape them. The procedure I need to debug is the following: proc getSoundFileInfo {path} { global prefs errno catch {exec $prefs(help:CSND) -U sndinfo $path} stuff if {[lsearch $stuff "AIFF"] == -1 && [lsearch $stuff "WAVE"] == -1 } {return 0} set type [lindex $stuff [expr [lsearch $stuff "soundfile,"] - 1]] if {$type == ""} { set type [lindex $stuff [expr [lsearch $stuff "soundfile"] - 1]] } set dur [lindex $stuff [expr [lsearch $stuff "seconds"] - 1]] set sr [string trim [lindex $stuff [expr [lsearch $stuff "srate"] + 1]] ", "] set tr [string trim [lindex $stuff [expr [lsearch $stuff ${sr},] + 1]] ", "] set siz [lindex $stuff [expr [lsearch $stuff ${tr},] + 1]] return "$dur $sr [string tolower $type] $tr $siz" Basically I need to take $stuff, strip away the escapes and tabs, and replace the newlines with spaces. I have been trying to do this using "exec sndinfo $path 2>&1" piped into the following commands: {perl -ne 'chomp; s/(^\s+|\s+$)//g; print "$_ " if ( $_ ne "" );' tr -d [:cntrl:] tr -d /t but I can only get tr -d /t to work as I want it to. I am hampered as well by my slow and hamfisted debugging techniques. Obviously it would be much more elegant if we could do do this job in tcl. Also does anyone know what I should replace the "string tolower" in the last line with? The current version of sndinfo now returns "WAV" rather than "WAVE", but "wave", "wav", is what the functions that call getSoundFileInfo need. Before anyone asks the obvious question, the reason I am trying to use cecilia 2.5 because version 2.0 doesn't work very well, with only about 40% of its features usable. And the reason I am trying to get csound5 working with it is because csound 4 segfaults when processing most of the cecilia orchestras. In any case it is a real pity that cecilia 2.5 has been available for the last 3 or 4 years, but has only ever been packaged for the mac. All that I actually had to do to get it up and running was to replace the contents of /usr/local/lib/cecilia with its conterparts in Cecilia.app. Scores that don't require you to load a sound file seem to work fine judging by the little experience I have had so far. Robert - -- Robert Persson ireneshusband(a)gmail.com -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFHF9bByQ3sfGecJBIRAttzAJ9H7q4cFE8XU10C3LjykZTvvI6HtQCcDhAF zaMzRH4c6Aw6WJxb2dZFz6M= =rl0/ -----END PGP SIGNATURE-----

18 years, 1 month

[LAA] [ANN] gigedit 0.1.0

by Marcos Guglielmetti

| [LAA] [ANN] gigedit 0.1.0 | De: Christian Schoenebeck <cuse(a)users.sourceforge.net> | Para: linux-audio-announce(a)lists.linuxaudio.org | Fecha:16/10/07 14:59 | | | On behalf of Andreas Persson, I am pleased to announce the release of | gigedit 0.1.0 [1], an instrument editor for gig files. You can find a | screenshot here[2]. | | * With gigedit it is possible to modify existing, as well as to | create new Gigasampler format instruments from scratch, which are not only | accepted by LinuxSampler, but now also by Gigastudio. | | * You can run gigedit as stand-alone application or "attached"[3] | to LinuxSampler. The latter case allows you to play and edit instruments | at the same time, making all your modifications immediately audible, | without having to reload the instruments into a sampler. | | * You can simply edit instruments by selecting the respective | sampler channel and clicking on "Edit" in either QSampler or JSampler, | which automatically spawns gigedit in "attached" mode. | | Plese notice that this is still a very young instrument editor, so better | backup your .gig files before editing them with this application! | | [1]http://www.linuxsampler.org/downloads.html | [2]http://www.linuxsampler.org/screenshots/gigedit_0_0_3.png | [3]http://download.linuxsampler.org/doc/gigedit/quickstart/gigedit_quickst |art.html#live_editing | | CU | Christian Hi, congrats. Will gigaedit be able to play .gig files by itself? I mean: linuxsampler is not free software as in freedom, so, It would be nice to have some replacement. Regards, -- `&' # Marcos Guglielmetti, co-director de # Musix GNU+Linux, 100% Software Libre para artistas _#_ http://www.musix.org.ar (#) / O \ + archivos: ftp://musix.ourproject.org/pub/musix ( === ) Ecología: http://autosus.wordpress.com `---' Personal: http://marcospcmusica.wordpress.com Leela: "Fry, tenemos un paquete que entregar..." Fry: "¡Lo tiramos por una alcantarilla y decimos que lo hemos entregado!" Bender: "Mucho trabajo... ¡Mejor quemarlo y decir que lo hemos tirado!" http://es.wikiquote.org/wiki/Futurama

18 years, 1 month

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Linux-audio-user October 2007