Linux-audio-user July 2004

linux-audio-user@lists.linuxaudio.org

172 participants
206 discussions

[linux-audio-user] Re: [a-users] Re: [a-devel] File system and Voluntary Kernel Preemption

by Lee Revell

On Thu, 2004-07-15 at 04:53, Damien Cirotteau wrote: > On Thu, Jul 15, 2004 at 10:35:47AM +0200, Free Ekanayaka wrote : > > |--==> "DC" == Damien Cirotteau <damien.cirotteau(a)agnula.org> writes: > > > > DC> Hi all, > > DC> some very interesting links submited by simmo on IRC > > > > DC> File system: > > DC> http://kerneltrap.org/node/view/3466 > > > > DC> Voluntary Kernel Preemption: > > DC> http://kerneltrap.org/node/view/3440 > > > > Yes these are definitively interesting! > > > > I'll read them carefully and see if we can adopt some new trick :) > > Two first thing that i can retain: > - Don't use reseirfs for now (especially with 2.6) > - Enable CONFIG_SND_DEBUG in the kernel so it will be easier to trace > the xruns. It looks that it is a very useful feature to understand where > the xruns comes from and is very good feedback to send to kernel folks The intrepid user in need of low latency should try 2.6.8-rc1-mm1. I sent a bunch of XRUN traces to Andrew Morton, and this kernel contains numerous latency fixes as a result. Some of these fixes were to extremely important areas (get_user_pages, a fix for framebuffer-scrolling issue, and more). The improvement should be major. He is going to be unavailable until July 26th, so the next few weeks are a great opportunity to test and collect data. You are correct in that reiserfs as shipped with the kernel should probably not be used for now if you need low latency. However, I strongly suspect that SuSe (which users reiser by default) contains fixes for this which are not in the mainstream kernel. By enabling CONFIG_SND_DEBUG *and* turning on XRUN debugging at runtime (echo 2 > proc/asound/cardX/pcmX/xrun_debug) you will be able to see whether this is affecting you. Here is the announcement: http://www.ussg.iu.edu/hypermail/linux/kernel/0407.1/1453.html Lee

20 years, 5 months

[linux-audio-user] [ANN] ams-1.8.5 - Analogue Detune/Drift

by Matthias Nagorni

Hello, recently I discovered that slightly detuning the voices of a polyphonic sound virtually adds a new dimension to it. After first experiments with voice detune and oscillator drift in ams-1.8.4 I added a module Analogue Driver into ams-1.8.5 featuring an improved detune/drift algorithmus. Most instrument patches have been updated. More details are found in the new README file and the News section on the AlsaModularSynth site. Have a lot of fun ! Matthias -- Dr. Matthias Nagorni SuSE Linux AG Maxfeldstr. 5 phone: +49 911 74053375 D - 90409 Nuernberg fax : +49 911 74053483

20 years, 5 months

RE: [linux-audio-user] remapping midi notes

by Cornell III, Howard M

Not to put a damper on it; but wouldn't you be a heexager (Ten>teen....)? -----Original Message----- From: linux-audio-user-bounces(a)music.columbia.edu [mailto:linux-audio-user-bounces@music.columbia.edu]On Behalf Of Frank Barknecht Sent: Thursday, July 15, 2004 1:31 PM To: A list for linux audio users Subject: Re: [linux-audio-user] remapping midi notes Hallo, Joey Reid hat gesagt: // Joey Reid wrote: > On Jul 15, 2004, at 2:48 PM, Frank Barknecht wrote: > >[midiout] for low level midi sending but then you'd have to do math in > >hex. ;( > > I like hex. In hex I'm still a teenager ;-) Hm, now that you say it. I never looked at it that way. Ciao -- Frank Barknecht _ ______footils.org__

20 years, 5 months

[linux-audio-user] Superscripting in Lilypond?

by Glenn McCord

Gidday. I'm using Lilypond to write some SATB and am trying to write chords under my bass stave. However it's posing difficult to write diminished and augmented chords that included superscripting i.e vii<sup>o</sup>. I've got the documentation and have been able to only use superscripting when I grab a note and go say, d_\markup{ vii \super{"o"}}. However if I do this for all notes, all the chords are written at different levels. Curerntly I'm just writing them as lyrics and instead of going vii<sup>o</sup> I just use viiDim. I'd rather not use that though. Cheers for any advice.

20 years, 5 months

[linux-audio-user] WONDER release

by Marije Baalman

Hi, I am happy to announce the first release of WONDER. The program WONDER (Wave field synthesis of new dimensions of electronic music in realtime) is designed to provide an interface between a wave field synthesis system and the software or hardware composers and performers of electronic music are used to. The program is still in development and trying to reach its eventual goal step by step. The current version (v2.0) allows the user to either create a composition for the movement of the sound sources in his composition or to control the movements in realtime, either via the gui or via open sound control. The program is released under the GNU General public license. Feedback and bug reports are very welcome: wonder(a)nescivi.de The program is created by Marije Baalman and Daniel Plewe (OSC implementation) and is developed in the Electronic Studio of the TU Berlin. WONDER is created for Linux (X11) and uses the Free Qt-Libraries (v3.0.2b or higher), libOSC++ libraries and BruteFIR (v0.99n or higher). Basic installation info can be found in the package in the INSTALL text. The README file lists some extra requirements and necessary adaptations for BruteFIR. Furthermore a soundcard with a lot of outputs and a lot of speakers are required, to make practical use of the program. At: http://gigant.kgw.tu-berlin.de/~baalman/ you will find a description of what Wave Field Synthesis is and under: program - download you will be able to download the program as a tar-ball. The manual with screenshots is also online. The software is by far not yet bug-free, but in my experience it is usable and generally it does not crash when running the audio (except if external conflicts happen or the processor is overloaded). See the KNOWBUGS file that comes with the package... sincerely, Marije Baalman --

20 years, 5 months

[linux-audio-user] Looking for howto to control audioplayer with footswitch

by Jürgen Schöneberg

hej! I 'm looking for a linux software to play soundfiles controlled by a footswitch on the serial port. (just possible to control start, rewind, stop) . Usually I'm using jack/ardour but haven't seen the possibility to use a footswitch to control the software. Even a howto for using a footswitch as an input device for a perl script would be very helpful. Any ideas? thank you very much for help cheers Jürgen

20 years, 5 months

[linux-audio-user] Linux music notation editor criteria

by Dave Phillips

Greetings: As promised, here's a set of test criteria used by Alan Belkin in his 1994 review of notation programs for the Macintosh. I hope that the authors of Linux music notation software will consider this list against the features of their own efforts. I'm not interested in comparing "ours against theirs". The Mac programs tested were all WYSIWYG notation editors, including Finale, Composer's Mosaic, Encore, Lime, and Nightingale, while some of the best Linux music notation software is devoid of any GUI. Nevertheless, the criteria seem adequate as base requirements for any music notation software, and I'm very interested in the opinions and evaluations of the Linux developers of such software. I know that the authors of NoteEdit, LilyPond, MusE/Musescore, Denemo, Rosegarden, Common Music Notation, and perhaps other significant notation editors are represented on the LAD/LAU lists, and I hope they will respond on-list to the criteria presented here. I also welcome comments from users regarding the presence or absence of the listed features in their favorite Linux notation program. I have only slightly altered Mr Belkin's original criteria where it was Mac-specific. The evaluations in his original article were either qualitative (good, bad, ugly, etc), quantitative, (1, 4, 12, etc), or affirmative/negative (yes/no). So, here we go: Note entry: mouse & keyboard MIDI step-time MIDI realtime w. flexible quantization audition other saves while recording retain performance data for playback number of independent rhythmic layers per staff maximum number of staves per system Entry of slurs, articulations, dynamics, etc.: intelligent default placement apply to multiple staves at once Selection in regional edits: vertical, horizontal slices within and across measures, staves, system, pages, etc. non-contiguous conditional selection Editing: click & drag positioning of symbols transposition (note, staff, selection, etc) enharmonic change by region rhythm: change note values (ease of use) rhythm: auto-rebar cut/copy/paste: music cut/copy/paste: non-musical items, formats, etc. mirroring (intelligent copies) Special/custom notation: unusual staves simultaneous key signatures unconventional time signatures additive time signatures simultaneous different time signatures drawing tool user-created symbols user-selectable fonts for all elements chord notation: graphic, playback, learn via MIDI fretboard notation figured-bass notation unusual note heads (slashes, harmonics, etc) easily adjustable cross-staff beaming Lyrics: mass create create on page import from text editor auto layout multiple fonts flexible placement MIDI playback: ALSA or OSS support channel support playback includes modifiers (crescendi, dynamics, etc) direct editing of MIDI data import patch lists (GM, GS, etc) scrolling playback edit during playback Entry layout: flexible engraver spacing within measure account for dynamics, slurs, annotative text, etc. Page layout: auto layout with engraver spacing reduce or enlarge symbols, staves, text, systems, by any percent, locally or globally full control of measures per system full control of systems per page remove empty staves within systems flexible spacing of staves within systems Part extraction: automatic with new layout dynamic links to master score File operations: follow Linux standards (?) simultaneous multiple files open printed output: PS, PDF, DVI, etc. Interface/overall ease of use: undo/redo any operation user-defined key bindings user control over notational defaults views: scroll, page, template, any percent, multiple simultaeous views priorities clear logical organization simple language and icons overall speed on-line help documentation ease of learning general solidity and stability In his article Mr Belkin also addressed the problem of tuplets, noting that at that time only Finale realized anything other than triplets when converting from MIDI input (file or realtime). I should also note that this list is hardly meant to be a complete set of expected features: after all, it's from an article published ten years ago. I'm sure we've advanced well beyond the state of the art in 1994... right ? :) Best regards, Dave Phillips

20 years, 5 months

[linux-audio-user] Timidity patches -- one per track?

by Mark Wilson

I've tried to find in the timidity manpage how to accomplish this, but no luck so far: I generated a three-voice file with the old Rosegarden, and exported it as a MIDI file. The three voices each take one staff, to which I assigned different patches. When I play the file on CLI, just as basic and straightforward as you please, I hear the three parts with different instruments, no problem. The feedback I get from the prompt lists Track 1, Track2, Track 3, logically enough. If I specify a different patch with the -P option, all three voices (in the polyphonic sense) have the same timbre-- the one I specified with the P switch. The burning question: How can I specify a different patch for different tracks? If it's in the manual, tell me where? Thanks! Cheers, Mark ===== -- Seek professional help! Ask a librarian. __________________________________ Do you Yahoo!? New and Improved Yahoo! Mail - 100MB free storage! http://promotions.yahoo.com/new_mail

20 years, 5 months

[linux-audio-user] Re: linux-audio-user Digest, Vol 10, Issue 55

by Brian Redfern

2.6 on suse is also different than 2.6 fedora, because suse has a couple of audio programmers who work to make sure their kernel works with audio, so I can use all my audio apps out of the box with 9.2, and the 2.6 kernel, without latency problems, and without needing a kernel recompile. On Tue, 13 Jul 2004 linux-audio-user-request(a)music.columbia.edu wrote: > Send linux-audio-user mailing list submissions to > linux-audio-user(a)music.columbia.edu > > To subscribe or unsubscribe via the World Wide Web, visit > http://music.columbia.edu/mailman/listinfo/linux-audio-user > or, via email, send a message with subject or body 'help' to > linux-audio-user-request(a)music.columbia.edu > > You can reach the person managing the list at > linux-audio-user-owner(a)music.columbia.edu > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of linux-audio-user digest..." > > > Today's Topics: > > 1. Re: Note tuning and quantizer in audio files (Paul Winkler) > 2. Re: distros (Steve Harris) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Tue, 13 Jul 2004 10:51:13 -0400 > From: Paul Winkler <pw_lists(a)slinkp.com> > Subject: Re: [linux-audio-user] Note tuning and quantizer in audio > files > To: A list for linux audio users <linux-audio-user(a)music.columbia.edu> > Message-ID: <20040713145112.GA2313(a)slinkp.com> > Content-Type: text/plain; charset=us-ascii > > In case anyone's interested, I just found an interesting > closely related thread on rec.audio.pro: > > http://groups.google.com/groups?th=e1a8a02e65f3da0c&seekm=jmtpe0t9ru3q4qst7… > > -- > > Paul Winkler > http://www.slinkp.com > > > ------------------------------ > > Message: 2 > Date: Tue, 13 Jul 2004 16:02:53 +0100 > From: Steve Harris <S.W.Harris(a)ecs.soton.ac.uk> > Subject: Re: [linux-audio-user] distros > To: A list for linux audio users <linux-audio-user(a)music.columbia.edu> > Message-ID: <20040713150253.GH31552(a)login.ecs.soton.ac.uk> > Content-Type: text/plain; charset=us-ascii > > On Tue, Jul 13, 2004 at 03:50:52PM +0100, tim hall wrote: > > Last Tuesday 13 July 2004 13:11, kmd was like: > > > can i use the 2.6 kernel or should i use > > > the special compiled multimedia 2.4 kernel (for mandrake, via contrib > > > sources). and i have trouble as well to play with jack without being > > > root, > > > > General consensus seems to be that a 2.4 multimedia kernel is the 'stable' > > approach. You won't have to run Jack as root if you run a patched multimedia > > kernel. You probably won't need to do a lot of tweaking. Best approach is > > probably to get a working system with 2.4 and then upgrade to 2.6 only if > > you're really not happy with results. Personally, I will be happy to wait > > until 2.6 is more stable. > > Agreed, I would only go to 2.6 is you really need some features in it - > its basicly stopped one of my machines from being a useful audio box. > > - Steve > > > ------------------------------ > > _______________________________________________ > linux-audio-user mailing list > linux-audio-user(a)music.columbia.edu > http://music.columbia.edu/mailman/listinfo/linux-audio-user > > > End of linux-audio-user Digest, Vol 10, Issue 55 > ************************************************ >

20 years, 5 months

[linux-audio-user] jack and xfs

by Ciccolella Lazzaro Nicolò

hi, for the first time I have put my slackware on a disc with xfs file-system. It is still advisable or necessary to create the temp-filesystem /mnt/ramfs and to compile --with-default-tmpdir=/mnt/ramfs option (as advice the README file of jack source package) ? thanks -- Lazzaro

20 years, 5 months

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Linux-audio-user July 2004