Linux-audio-user December 2003

linux-audio-user@lists.linuxaudio.org

149 participants
190 discussions

[linux-audio-user] DSP2000 C-PORT and MIDI input

by Emiliano Grilli

Hello, I have recently bought the ice1712-based DSP2000 C-PORT from Hoontech and I'm really satisfied with it. I only have a little problem: MIDI! The card has 1 MIDI in and 2 MIDI out, and the 2 outs are working fine. However, I can't get anything from MIDI in :-( Anyone has that card and can confirm this problem or I have to check my hardware? Maybe ALSA get confused? With aconnect I see 2 devices (0 and 32) both as inputs and as outputs... I've tried on the staudio.com forum and they suggest to test the card under windows, but (ehm..) I don't have it... Any suggestions? TIA -- .-----------------------. | Emiliano Grilli | | emillo(a)libero.it | | Linux user #209089 | | http://www.emillo.net | '-----------------------'

21 years

[linux-audio-user] ams, jackd & X as root? on debian

by Eric Dantan Rzewnicki

hello, I have jack installed and working now. So, now I'm trying to get AlsaModularSynth compiled and running. Has anyone else accomplished this in debian stable (woody)? I installed libqt3-mt (along w/everything it depended upon), fftw-dev, fftw2, sfftw-dev, sfftw2 and ladspa-sdk to get ladspa.h. I've tried to edit the top of make_ams to agree with the location of the qt3 libs, bin and include directories on my system as best as I could figure ... but I'm not sure I got it right: QT_LIB_DIR=/usr/lib/qt3/plugins/styles QT_BIN_DIR=/usr/share/qt/bin QT_INCLUDE_DIR=/usr/include/qt it seems to compile OK when I do: make -f make_ams though there are a lot of warnings about comparing signed to unsigned and other warnings that flew by. Are these benign? Anyway. I end up with an executable ams. When I run ./ams I get this: ./ams: error while loading shared libraries: libjack.so.0: cannot open shared object file: No such file or directory I have that in /usr/local/lib/libjack.so.0 so creating this link appears to help: box1:/usr/lib# ln -s /usr/local/lib/libjack.so.0 libjack.so.0 Is that the correct sollution? but, now: box1:/home/eric/audio_code/ams-1.5.5# ./ams ams: cannot connect to X server I assume this is because X is running as me (eric) and not as root. I'll try getting out of X and starting it as root as soon as I finish writing this message. But, is there a way to let root connect to the X server that's running as eric? I was sort of ok (well, not really, but I'm giving it a try) with the idea of running jackd and its clients as root ... but, running X as root, too? that makes me more nervous, somehow... maybe I shouldn't be nervous about that ... I'm not sure. anyway. i'll give it a shot with a root X session. I'm thinking that maybe I should patch and recompile the kernel and recompile jack to enable capabilities so I don't have to run as root. Do those of you running jackd as root also run your X session as root? Thanks for listening, Eric Rz. PS If all of this has been covered before and my questions are annoying you, feel free to send me to the archives. I try to follow jackit-devel, but most of it seemed to go over my head before I actually started to try it. So, re-reading the past couple months would probably do me some good now that I have the real thing in front of me. -edrz

21 years

[linux-audio-user] [ANN] Specimen version 0.0.2 released

by Peter Bessman

Specimen is a midi controlled audio sampler for GNU/Linux systems. It supports the ALSA midi sequencer interface, and can output audio via ALSA or JACK. This release encompasses some significant changes, making Specimen usable software for enthusiasts. Hook it up to a sequencer, connect it to Ardour, and you have a passable drum machine. Visit www.gazuga.net to download the tarball, view a screenshot, or listen to a sample song, and feel free to contact me with any questions or comments you have. [pb]

21 years, 1 month

[linux-audio-user] Kernels, and disk I/O

by Anahata

Hi While all the excited chat is about the shiny new kernel 2.6.0, I have a 2.4.x question: I used 2.4.18 until recently, when I found that a disk I/O scheduling problem (lack of responsiveness while writing backups to an optical disk) was solved by upgrading to 2.4.20. Now I find that recording audio on 2.4.20 is useless, with long droputs in the recorded sound. I'm sure this is related to the way the system periodically dozes off for a few seconds (not echoing console input) while it does some disk intensive work. Rebooting 2.4.18 restored audio sanity, fortunately. The kernel has no low-latency patches applied. The sound system is M-Audio DIO2448 + OSS drivers Hard disk is standard IDE, tuned with hdparm Distro is Debian 3.0 with quite a lot of "testing" packages installed. Base H/W 800MHz Duron + 256M RAM. This does seem to be related to the disk I/O scheduling change, or possibly virtual memory Is there a kernel guru who can advise? Possible options seem to be: 1. Apply low latency patches 2. Upgrade to 2.4.22 3. Upgrade to 2.6.0 4. something else? -- Anahata anahata(a)treewind.co.uk Tel: 01638 720444 http://www.treewind.co.uk Mob: 07976 263827

21 years, 1 month

[linux-audio-user] [ANN] MusE version 0.6.2

by Robert Jonsson

Hi, This announcement is to inform you that a new version of MusE (0.6.2) has just been released. MusE is a multitrack virtual studio for Linux based on audio and midi sequencing. Brief list of features: - MIDI sequencer with: - pianoroll - drum editor - score editor - Integrated softsynths - Support for external MIDI equipment - Audio sequencing with: - LADSPA plugins - Alsa output/input - Jack output/input - LADCCA support - MusE is translated to Russian, Spanish, French and Swedish. * For screenshots and more information, check the homepage. http://lmuse.sourceforge.net. Release 0.6.2 has a large number of improvements and bugfixes, current users are encouraged to upgrade. Changes since 0.6.1 include: - Many many usability improvements in Arranger, Drum editor and Piano roll, including lots of new shortcuts. - Vastly improved FluidSynth integration. - Some new documentation (still way too little though). - Lots of bugfixes, including velocity event handling, saveAs, LADSPA path, project path. - Improved RT performance. - 64bit arch fixes. - and lots more, check the ChangeLog. For some demo tracks that are made with MusE check here: http://www.helgo.net/gavel/lunar/index.html (with many thanks to the author and MusE hacker, Mathias Lundgren) Last but not least, MusE recently moved! MusE is now available at http://lmuse.sourceforge.net. Have fun! /The MusE development team

21 years, 1 month

[linux-audio-user] ! hdsp9652 again yikes

by Aaron Trumm

DAMMIT aaron! last question for now - this is for anybody - what is this?: (it was mentioned in a thread on alsa-devel) hdspconf GUI -------------- Aaron Trumm NQuit www.nquit.com --------------

21 years, 1 month

RE: [linux-audio-user] The trouble with disks

by eviltwin69＠cableone.net

John, First, is your data disk separate from your system disk? If not, this could be part of your problem. Second, what FS are you using? Ext3 is a bad choice since it puts the journal in a different location from the file. I would recommend using Reiserfs for your data partition. XFS might even be better but I haven't seen any tests on it yet. Ext2 is better than ext3 but still not as good as Reiserfs. Another thing, turn off syslogd, crond, etc before recording. Jan -----Original Message----- From: "linux-audio-user-bounces(a)music.columbia.edu" <linux-audio-user-bounces(a)music.columbia.edu> on behalf of "John Anderson" <ardour(a)semiosix.com> Sent: 18 Dec 2003 13:21:25 +0200 To: "linux-audio-user(a)music.columbia.edu" <linux-audio-user(a)music.columbia.edu> Subject: Re: [linux-audio-user] The trouble with disks On Thu, 2003-12-18 at 13:09, Robert Jonsson wrote: > Did you put jacks tempfiles on a tmpfs partition ? > I regularily change /tmp to a tmpfs partition in /etc/fstab these days. > > none /tmp tmpfs default 0 0 > > or something like that... I have mine at /mnt/ramfs, with jack thusly configured. I read somewhere that ramfs is purely memory based, whereas tmpfs can use disk as backup if it needs to expand. bye John

21 years, 1 month

[linux-audio-user] NoteEdit 2.3.4 note entry (beam) question

by Mikhail Ramendik

Hello, I have installed NoteEdit 2.3.4. It is greatly improved since my last try some mothns ago; thanks to the developers for the brace support! However, I could not figure out how to use the beam tool in a reasonably fast way. For example, if I enter four 1/16 notes in a row and want to use a beam, I found I can enter them, switch to modification mode, select them, then use the beam tool. Is there a shorter way? (In fact, I would like to try using NoteEdit for note entry anspecifically for subsequent printing via MusixTex or something - to replace Finale in this category. I know of no better open source software to do this...) Thanks in advance for any answers! Sincerely yours, Mikhail Ramendik

21 years, 1 month

[linux-audio-user] any takers? potential linux-friendly vendor

by WR

I emailed sounddevices.com asking if they had any plans to port their osx driver for the USBPre over to linux, and got this back...btw, they make some pretty cool stuff, the usbpre is working very well for me...it would be very nice to have under linux... =:) http://usbpre.com/index.html http://www.sounddevices.com/products/index.html --------- Will, We do not have any plan for Linux and the USBPre. If you can point us to a developer, we would be happy to pursue it. Thank you for your interest. Jon Tatooles jon_tatooles(a)sounddevices.com

21 years, 1 month

[linux-audio-user] JACK low latency performance

by Vincent Touquet

Noticed some threads of low latency on Linux kernel 2.4.x (patched) vs 2.6. I was wondering how the Darwin kernel compared to the Linux kernel ? Any people running jack on OS X ? At least the jackit.sf.net site states that it runs on OS X, but I have yet to hear on how it actually performs on OS X. I would hope that the OS X kernel was at least a bit more tuned to low latency multimedia work than a vanilla 2.4 or 2.6 ? regards Vincent

21 years, 1 month

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Linux-audio-user December 2003