Linux-audio-user January 2003

linux-audio-user@lists.linuxaudio.org

119 participants
142 discussions

[linux-audio-user] OMRL - New Mailing List

by Darren Landrum

Just to let everyone know, I have created a new mailing list for the OMRL at my studioconsul.net domain. To subscribe, send a blank email to: omrl-subscribe(a)studioconsul.net To unsubscribe, send a blank message to: omrl-unsubscribe(a)studioconsul.net To send messages to the list, send messages to: omrl(a)studioconsul.net You will need to confirm your subscription or unsubscription to/from the list. I also still need to figure out how the archiving system for this list software works. This is just a quick and dirty mailing list for now, so once I get a server and the OMRL domain up and running, I will probably migrate it over there. That should not be too difficult, though. See you on the new list. :) Regards, Darren Landrum

21 years, 3 months

[linux-audio-user] HDSP 9652 MIDI - A timing disaster?

by Mark Knecht

Hi, I asked about this two weeks ago but got no responses. I'm hoping this time I hear something back from other owners of the same hardware. I recently purchased an RME HDSP 9652 card. The card is working fine for audio, but the MIDI interface is a timing disaster. The interface works, but won't keep time. A 2 minute song is Rosegarden takes abut 2:45 to play every time. You can hear how the HDSP isn't delivering closely spaced MIDI events together, but is sort of smearing them out. My machine is set up using the PlanetCCRMA system. According to Synaptic my Alsa driver is from CVS:20021216. Jack is 0.44. This machine works just fine with the MidiMan 2x2 interface. No timing problems at all. Has anyone else purchased this card? Used the MIDI interface on this card? Gotten better results with this card? Can anyone suggest how I could go about fixing this myself? I'm not a programmer, so really hacking the code is doubtful, but this driver is acting like there is just a basic mistake somewhere. Possibly I could find it if I knew where to look. I hope someone will respond to this email so we can get something going to get this fixed. I really need this interface to operate soon. Thanks in advance, Mark

21 years, 3 months

[linux-audio-user] [ANN] swh-plugins 0.3.6 *cough*

by Steve Harris

* Really fixes the UID clashes. * Includes changes to make it build on ia64 and mips, thanks to Anand Kumria. I will now be walking around with a paper bag over my head for the next few days. - Steve

21 years, 3 months

[linux-audio-user] m-audio radium USB midi keyboard

by Eric Dantan Rzewnicki

http://www.m-audio.com/products/m-audio/radium.php Has anyone tried using this keyboard with linux, yet? I was about to buy an Oxygen 8, because I've read about several people in the LAD, LAU, ALSA community using them with linux successfully. But, then I saw this new Radium controller. It has 61 keys to the oxygen's 25, the same 8 knobs, pitch and mod wheels, and adds 8 sliders to the oxygen's 1. Would it be too far fetched to think that this would work as easily with a linux box as the Oxygen does? I would be very happy if it would. Thanks, Eric Rz.

21 years, 3 months

[linux-audio-user] swh-plugins 0.3.5 [bugfix]

by Steve Harris

The were some bugs in 0.3.4 so I'm releasing again. Sorry. * UID clash with flanger and l/c/r delay [serious] - spotted by Bob Ham, thanks * SC4 had the wrong label [mild but anoying] * autoconf script wasn't obeying CFLAGS [mild but anoying] I believe that SC4 and the lookahead limiter might be causing problems with some hosts as they have control outs. If you spot problems with these and think its the host, please contact the author. I know that ecasound and jack-rack handle it fine. - Steve

21 years, 3 months

[linux-audio-user] [ANN] ecasound 2.2.0 released

by Kai Vehmanen

1. A short summary of changes Support for JACK and LADSPA 1.1 added, more intelligent runtime parameter selection, ECI licence changed from GPL to LGPL, new NetECI client API, ecasound emacs mode added, largefile support, new resample, reverse and typeselect audio objects, new peak amplitude chain operator and new utilities ecalength, ecamonitor and ecasignalview. --- 2. What is ecasound? Ecasound is a software package designed for multitrack audio processing. It can be used for simple tasks like audio playback, recording and format conversions, as well as for multitrack effect processing, mixing, recording and signal recycling. Ecasound supports a wide range of audio inputs, outputs and effect algorithms. Effects and audio objects can be combined in various ways, and their parameters can be controlled by operator objects like oscillators and MIDI-CCs. A versatile console mode user-interface is included in the package. Ecasound is licensed under the GPL. The Ecasound Control Interface (ECI) is licenced under the LGPL. --- 3. Changes since last release Although over a year has passed since the last major stable release, ecasound development work has not stopped. To put things into perspective, a diff between 2.0.0 and 2.2.0 takes about 1.7MB of space. Considering the whole 2.2 codebase is just over 2MB, this is quite a lot! In the future there will hopefully be much more frequent releases. Here's a list of most notable changes: * Intelligent parameter configuration. Instead of one set of default parameters, ecasound lets user specify different parameters for three predefined profiles: real-time, real-time-low-latency and non-real-time. When starting processing, ecasound will automatically select and use most suitable profile for the given configuration. Ecasound will not only consider the types of objects, but also the runtime environment: whether it is possible to lock memory, to use RT-scheduling and so on. * The Ecasound Control Interface is now licensed under LGPL. In addition, the ECI implementations are now standalone, and do not require linking against libecasound and libkvutils. Only thing needed to run ECI apps is to have a working ecasound executable installed. * JACK support added. This is a major new addition as it involved making relatively large changes to the ecasound engine. * Up-to-date support for ALSA-0.9 and LADSPA-1.1. * Effect preset improvements. Support for parametrized presets has been improved. For instance it's now possible to write a wrapper effect preset for a complex ecasound effect or LADSPA plugin, and only publish a subset of original effect's parameters. * The disk i/o buffering subsystem that was introduced in ecasound 2.0 has been integrated more closely to the ecasound engine leading to better performance and reliability. * NetECI API. Ecasound now has a daemon mode that allows multiple clients, using the NetECI protocol, to connect to a running ecasound session. A proof-of-concept client, ecamonitor, is included in the package. It can be used to monitor ecasound session status from a separate console. This is especially useful in combination with ecasound's console mode user interface. The console interface can be used for control and the NetECI monitor client for getting real-time status information. In addition, NetECI can be used with all ECI apps. * Ecasound.el, an emacs ecasound mode and a Lisp ECI implementation. * Largefile support for reading and writing audio files larger than 2GB. * New audio object types: JACK, resample, reverse, typeselect. * New chain operators: peak amplitude monitor * Utilities: ecalength and ecamonitor added, ecasignalview totally rewritten. * New ECI implementations: Lisp, Perl and PHP (the last two are not included in the main ecasound package) Full list of changes is available at <http://www.wakkanet.fi/~kaiv/ecasound/history.html>. --- 4. Interface and configuration file changes * Command line options: 2.2 is backward compatible with 2.0 releases, so old scripts and .ecs files should continue to work. See ecasound(1) for more info. * Ecasound Interactive Mode (EIAM): No changes to the commands available in 2.0 releases. See ecasound-iam(1) for more info. * Library interfaces: Major changes in all library interfaces. Direct use of these libraries is no longer encouraged. The ECI and NetECI APIs are preferred for developing new applications on top of ecasound. * Ecasound Control Interface (ECI): No interface changes. * The ~/.ecasoundrc config file is no longer used. The new location is ~/.ecasound/ecasoundrc. As there's now a separate global configuration file, it is no longer necessary to duplicate all config variables in the user config files. See ecasoundrc(5) for further info. --- 5. Links and files Web sites: http://www.eca.cx http://www.eca.cx/ecasound - http://www.alsa-project.org http://jackit.sourceforge.net http://www.ladspa.org Source and binary packages: http://ecasound.seul.org/download http://ecasound.seul.org/download/ecasound-2.2.0.tar.gz Distributions with maintained ecasound support: Agnula - http://www.agnula.org Debian - http://packages.debian.org/stable/sound/ecasound.html http://packages.debian.org/unstable/sound/ecasound2.2.html DeMuDi - http://www.demudi.org FreeBSD - http://www.freebsd.org/ports/audio.html Gentoo Linux - http://www.gentoo.org PLD Linux - http://www.pld.org.pl PlanetCCRMA - http://www-ccrma.stanford.edu/planetccrma SuSE Linux - http://www.suse.de/en Note! Distributors do not necessarily provide packages for the latest ecasound version. -- http://www.eca.cx Audio software for Linux!

21 years, 3 months

[linux-audio-user] A level meter to test

by Laurent Georget

Hello! There is a new level meter called "ameter" : it is an Alsa plugin and is intended to be usable with all Linux audio programs that don't have meters, and that cannot connect to Jack/Meterbridge. Examples : Glame, Mplayer... Details and download here: http://perso.club-internet.fr/lgeorget/ameter.html Thanks for testing and reporting problems . Laurent

21 years, 3 months

[linux-audio-user] Demudi Agnula

by dietrich.heese.boutin＠utoronto.ca

Apparently there are no mirrors having the new agnula beta distro available. However, you can probably try to search for it at the ircam servers. Specifically, ftp.ircam.fr there you shall find the ReHMuDi rpms, as well as a yet to be implemented agnula mirror. In the mean time if anyone finds a mirror for the agnula DeMuDi distro or a server making the following: debian-DeMuDi09-i386-biary-1.iso available(or has a cd) please e-mail me a.s.a.p. -- dietrich.heese.boutin(a)utoronto.ca

21 years, 3 months

[linux-audio-user] format conversion question (long)

by ben-extra＠MIT.EDU

Hi, I have a few questions about audio format conversion. After reading a description of the purpose of this list, and reading the list itself for about 10 days, I think this is an acceptable place to be asking. If, in fact, my questions are best asked someplace else, please let me know, and my apologies. I have quite a few recordings that were made from a RealPlayer 8 live stream. As saved by vsound (.au format), they are about 500 Megabytes each! Seeing as RealPlayer reports the (original) stream/broadcast as 12.4 Kbps, and the recordings are about 3.5 hours long, I am quite sure they are being saved to disk with much higher quality then needed. :-) My basic need is to reduce their size. I am not an expert in audio processing, and I would prefer not to become an expert in order to make the correct choices for this conversion. Hence, I hope that this is an easy question for somebody(s) reading this list to answer. I don't need to conserve every possible megabyte of disk space, indeed I would prefer to be conservative, and not lose any quality. The recording is of low AM radio quality as it is... I have sox installed on my system, so I am trying to use that. I read through the man page. I don't feel a need to have stereo, so I took a wild guess as to what rate would be appropriate and did the following. My attempt was to produce a mono recording at 8000 samples per second. marit@chipmunk:/var/tmp$ sox -V test.au -c 1 -r 8000 test.wav polyphase sox: Detected file format type: au sox: Found Sun/NeXT magic word sox: Input file test.au: using sample rate 11025 size shorts, encoding signed (2's complement), 2 channels sox: Input file test.au: comment "test.au" sox: Writing Wave file: Microsoft PCM format, 1 channel, 8000 samp/sec sox: 16000 byte/sec, 2 block align, 16 bits/samp sox: Output file test.wav: using sample rate 8000 size shorts, encoding signed (2's complement), 1 channel sox: Output file: comment "test.au" ******* The resulting file sizes are then: -r--r--r-- 1 marit marit 527881224 Jan 6 15:43 test.au -rw-r--r-- 1 marit marit 191521568 Jan 7 19:13 test.wav I am open to any suggestions. I wasn't expecting 3.5 hours of low-quality audio to be 200 MB, but maybe I am naive. Am I using the wrong tool? As a separate question: How much space would I save using mp3 or ogg encoding? Thanks in advance, Ben Blout

21 years, 3 months

[linux-audio-user] [ANN] JACK Rack 1.1

by Bob Ham

Hi all, Nice couple of new features with this release, a lot of code cleanups, a bit of UI work, and general betterness all round :) And, if I'm not mistaken, this makes jack rack the only application so far with LRDF support. Nee ner nee ner ;-) * proper ladcca support (pays attention to events) * added saving/loading rack configurations. this is a bit of a hack tho as when you open a file, it only adds the plugins to whatever's in the current rack. in fact, the whole of the file loading/saving is hairy atm. * added lrdf support (this is majorly phat.. categorised plugin menus :) * proper toolbar with stock buttons * control rows now have no central port label * added a menu bar * added a splash screen * added an about box (using gnome 2) * nice new icon and logo images, used for the splash screen, the window icons and also a gnome 2 .desktop * lots of code separation and cleanups and under-the-hood changes http://pkl.net/~node/jack-rack.html Bob

21 years, 3 months

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Linux-audio-user January 2003