Linux-audio-user January 2003

linux-audio-user@lists.linuxaudio.org

119 participants
142 discussions

[linux-audio-user] [ANN] JACK RACK now hosted on sourceforge

by Bob Ham

Hi all, I decided it was time to get some proper hosting. The sourceforge summary page is at http://sourceforge.net/projects/jack-rack/ . There's a mailing list, jack-rack-devel which you can subscribe to with http://lists.sourceforge.net/lists/listinfo/jack-rack-devel . Nothing in CVS as of yet. Bob

22 years, 2 months

[linux-audio-user] [ANN] JACK TimeMachine

by Steve Harris

http://plugin.org.uk/timemachine/ tarball, 100k. Depends on SDL, SDL_image, jack and libsndfile. I used to always keep a minidisc recorder in my studio running in a mode where when you pressed record it wrote the last 10seconds of audio to the disk and then caught up to realtime and kept recroding. The recorder died and haven't been able to replace it, so this is a simple jack app to do the same job. It has the advantage that it never clips and can be wired to any part of the jack graph. I've been using it to record occasional bursts of interesting noise from jack apps feeding back into each other. Usage: ./configure, make, make install, run jack_timemachine. Connect it up with a patchbay app. To start recording click in the window. To stop recording, click in the window. It writes out 32bit float WAV files called tm-<time>.wav, where <time> is the time the recording starts from. The prebuffer time and number of channels are set in a macro, defaults are 10s and 2. It works on my machine, and I'l fix major bugs, but I don't really have time to support another piece of software, so good luck :) If anyone wants to maintain it, feel free. May it preserve many interesting sounds for you, Steve

22 years, 2 months

[linux-audio-user] alsa /dev/sequencer oss compatability

by Craig Maloney

Hi all. I have an on motherboard es1371 (which appears to be working fine, although I'm not using it for audio). Can't seem to get the midi working. Here's the skinny... relevant output of lsmod: ---------------------------------------------- snd-seq-midi 3136 0 (autoclean) (unused) snd-seq-oss 22080 0 (autoclean) snd-seq-midi-event 2792 0 (autoclean) [snd-seq-midi snd-seq-oss] snd-seq 32812 2 (autoclean) [snd-seq-midi snd-seq-oss snd-seq-midi-event] snd-card-ens1371 9408 0 snd-pcm 46176 0 [snd-card-ens1371] snd-timer 9056 0 [snd-seq snd-pcm] snd-rawmidi 11456 0 [snd-seq-midi snd-card-ens1371] snd-seq-device 3744 0 [snd-seq-midi snd-seq-oss snd-seq snd-rawmidi] snd-ac97-codec 22848 0 [snd-card-ens1371] snd 23336 2 [snd-seq-midi snd-seq-oss snd-seq-midi-event snd-seq snd-card-ens1371 snd-pcm snd-timer snd-rawmidi snd-seq-device snd-ac97-codec] soundcore 3556 4 [snd] ----------------------------------------------- $ ls -la /dev/sequencer crw-rw---- 1 root audio 14, 1 Mar 14 2002 /dev/sequencer ------------------------------------------------ $ ls -la /proc/asound/dev total 0 dr-xr-xr-x 2 root root 0 Jan 13 21:57 . dr-xr-xr-x 5 root root 0 Jan 13 21:57 .. crw-rw---- 1 root audio 116, 0 Jan 13 22:21 controlC0 crw-rw---- 1 root audio 116, 8 Jan 13 22:21 midiC0D0 crw-rw---- 1 root audio 116, 24 Jan 13 22:21 pcmC0D0c crw-rw---- 1 root audio 116, 16 Jan 13 22:21 pcmC0D0p crw-rw---- 1 root audio 116, 17 Jan 13 22:21 pcmC0D1p crw-rw---- 1 root audio 116, 1 Jan 13 22:21 seq crw-rw---- 1 root audio 116, 33 Jan 13 22:21 timer ----------------------------------------------------------- presumably snd-seq-oss is the /dev/sequencer compatability layer (which I loaded explicitly). Neither playmidi nor rosegarden can seem to open /dev/sequencer. playmidi error: ------------------------------------------------- playmidi: No playback device found ------------------------------------------------ Do I misunderstand the setup? I am presuming that when I load snd-seq-oss, that it redirects /dev/sequencer to and from the alsa sequencer and the alsa sequencer is presumably hooked up to alsa raw-midi which presumably points to the joystick port on the es1371. Is this right (I'm not so sure -- count the occurences of the word "presumably in the preceding ;) )? If so, does anyone have any idea why it's not working? Thanks in advance. Cheers, Craig

22 years, 2 months

RE: [linux-audio-user] Which audio card to use?

by Richards, Ed

Janez, Here is a good one that I was reading when your message arrived in my inbox. Enjoy, Ed Richards http://www.pcavtech.com/soundcards/reports/index.htm -----Original Message----- From: Janez Vrenjak [mailto:janez@kud-kontrabant.si] Sent: Thursday, January 16, 2003 9:21 AM To: linux-audio-user(a)music.columbia.edu Subject: [linux-audio-user] Which audio card to use? Hay, can someone tell me which audio card to choose or to point me to some site where I can read about it. I'd like to mix music. I.e. to build some kind of small home studio. Thx Regards Janez This email, including any attached files, may contain confidential and privileged information. Any review, use, distribution or disclosure of included information by unintended recipients is strictly prohibited. If you are not a named recipient or authorized to receive and / or act on information sent to a named recipient, or have reason to believe you are not or should not be one of the named recipients, please notify sender accordingly by reply email and delete all copies of this message prior to forwarding, copying or otherwise reproducing this message or attachments thereto. For information regarding the export control status of items discussed in this document, please refer to the project control list. Thank you.

22 years, 2 months

[linux-audio-user] midi sequencing

by John D. Barnett

Hi- I'm trying to get a usable midi sequencing setup, and I'm almost there. All the software is from the Planet CCRMA on top of RH8.0, and everything's working (thanks, Fernando, for your help). What I'm having problems with now are the apps; I should add that I'm a newbie, so sorry if these questions are in the fine manual... Rosegarden (4-0.8-2) Is it possible to change the note/voice used by the metronome? Also, there's an echo when I play the keyboard-- is Rosegarden echoing the midi input? How can I turn this off? There's a tutorial that refers to the "studio", but I can't find it; is this in a newer version? I'd like to set up the instrument definitions for the Roland RD-600 (does anyone have a file of this?) Muse (0.5.3b-2) I can't seem to get it to record; I've tried following the online directions, but without success. The UM-1S shows up in the list of midi ports, and I make it recordable; I make the track recordable, and set a range, double-click within it, and try recording-- nothing ever happens. Are there other sequencing apps I should try out in this distribution? Thanks! -John PS my configuration, if it addresses any questions above: Hardware: Gateway laptop, p3@900MHz, with maestro3 sound and Roland UM-1S usb midi, with a Roland RD-600 keyboard Kernel, drivers etc from planet ccrma @home; low latency patch enabled

22 years, 2 months

RE: [linux-audio-user] M-Audio Audiophile

by eviltwin69＠cableone.net

I'm planning on writing some documentation on using the envy24control program in the near future. This is what you really want to use with the ice1712 driver. You will see many more channels than you have with the audiophile. IIRC you should have 2 analog and 2 digital. Jan -----Original Message----- From: "linux-audio-user-admin(a)music.columbia.edu" <linux-audio-user-admin(a)music.columbia.edu> on behalf of "Joshua N Pritikin" <vishnu(a)pobox.com> Sent: Thu, 16 Jan 2003 12:53:17 +0530 To: "linux-audio-user(a)music.columbia.edu" <linux-audio-user(a)music.columbia.edu> Subject: [linux-audio-user] M-Audio Audiophile i got my new Audiophile 2496 installed with Alsa 0.9.0rc5. i have an external A/D converter and the SPDIF light is lit, meaning that the card is working. alsamixer shows *lots* of controls. What do they all do? Can someone post a working /etc/asound.state? -- Victory to the Divine Mother!! after all, http://sahajayoga.org http://why-compete.org

22 years, 2 months

[linux-audio-user] lightweight midi selector?

by Daniel James

Hello all, Can anyone recommend a simple low-on-resources program that will allow me to select a midi bank or patch from those available on the soundcard? I don't need sequencing abilities, I just need to be able to select 'piano' or 'organ' or whatever for live playing. Preferably without KDE or Gnome dependencies - I'd like to save resources while recording with Audacity running under the Blackbox window manager. Cheers Daniel

22 years, 2 months

Re: [linux-audio-user] VST plugins and linux

by nick

> > > > also supports MIDI, which I believe is a problem for LADSPA (Taybin?). > > > > > > Yes. XAP is supposed to address this (at an abstract level), I believe > > > that explicit MIDI support ala VSTi is a serious mistake. > > > > I know this subject has been extensively chewed on LAD but perhaps you > > can summarize for normal users why it's a bad idea or implementation. I > > imagine the MIDI + VST arrangement is quite popular with Win/Mac > > musicians. Those musicians coming into Linux might wonder "Why no MIDI > > with LADSPA plugins?" (though of course XAP should work to make 'em > > happy ;). > > Mainly because MIDI is very primitive and supporting MIDI at a low level > ties you to it to some extent. XAP has a highlevel control interface that > MIDI can be converted into trivially, but can handle other things. I still have trouble understanding this view (except for non-standard tunings..) Everyone seems to love knocking MIDI, but MIDI is a *real* standard, supported by countless manufacturers for two decades now. Any improvements or a new standard are going to arise from the MIDI consortium itself and the support of manufacturers.. If MIDI were too primitive for the job, then we wouldn't have all these neat hardware synths!! MIDI's simplicity is also one of its greatest strengths along with its low overhead and easy processing. I hope that one day some commercial manufacturers will port their apps to Linux, but does anyone honestly expect their going to use XAP? No, as soon as this happens XAP will be forgotten. And XAP is just going to alienate potential audio developers from Linux - from where i stand it just looks too complicated and over-engineered. I can't help but feel a lot of energy is being spent here by well-meaning individuals which could be better spent by settling on a simpler standard and getting on with application support, the biggest gap for Linux. Anyone who's done/doing computing at degree level will know all about the OSI vs. TCP/IP fiasco, and I can't help but see similarities. end_rant(void) -nixx __________________________________________________ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com

22 years, 2 months

[linux-audio-user] Re: signal processing kits

by Fabio de Matos

> So you can run it in the sh command line, in the python commandline or > in a real script. That's a big advantage over C++, let alone the > syntactical advantages. It's faster to write, and with the numercial > libs it's not that much slower. The problem is i want to have total control of the overhead, while being able to optimize any code i want. If i can place all of the heavy overhead in a non-critical thread, it's just fine. > > I will consider looking at it. What are the reasons to use > > python > > instead of c++? I have some experience in c++ code but has never > > seen python, nor used any of its tools... and i sure would need the > > numerical extension you mentioned. > > Well, now that you mention it, Python would be no better for real time > work than the C++ libs from Octave. > > Looks like you'll be working from scratch. > > Erik > -- As someone said previously, there is a way to write major code issues in c++ and glue them together with python. This is not far from what i have foreseen. I though of a thread running digital processing over some stream, and some other just for management issues, possibly receiving orders from a script. The first should be c/c++, while the second could be anything else. Strange as it is, you saying i have to do it from scratch is REALLY good news to me. As it happens i have this end of graduation project, which was more or less targeted to the requirements i asked about in my first mail ( althought it was not my main proposal ). As it goes, i can say to my professor i really couldn't find anything very close to the project i have going on ( it's almost done by now ). The bad news is i have to use my own code, which was written mainly in a rush, and lacks a little discipline in some points. If someone would like to take a glance, i would be glad, though it lacks documentation, and is commented mainly in portuguese. By your news, i have second thoughs of continuing it to serious work, maybe in a master thesis. Again, thank you all, Fabio

22 years, 2 months

[linux-audio-user] [ANN] JACK Rack 1.1.2

by Bob Ham

Hi all, Good job I'm getting a new hard disk soon and will be able to install some other distros to test on :) Just build fixes with this release. There was also a gtk-2.2-only function in there, which has been gtk-2.0-ified. * build fixes for gcc 2.9x from Fernando Pablo Lopez-Lezcano * compiles with gtk 2.0 now (thanks to Fernando again) * builds without lrdf now (thanks to Austin Acton) http://pkl.net/~node/jack-rack.html Bob

22 years, 2 months

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Linux-audio-user January 2003