Linux-audio-dev

linux-audio-dev@lists.linuxaudio.org

3 participants
7440 discussions

by James W. Morris

Sorry, forgot to mention I liked the putch bends too! ~(sirromseventyfive)~ _________________________________________________________________ It's fast, it's easy and it's free. Get MSN Messenger today! http://www.msn.co.uk/messenger

20 years, 7 months

[linux-audio-dev] 2nd LAD conference

by Matthias Nagorni

Hello, as announced earlier, the 2nd Linux Audio Developers conference will take place from 29. April to 2. May 2004 at ZKM (Center for Art and Media), Karlsruhe, Germany. In addition to the "Call for Papers" there is also a "Call for Music". Both are open until 29. February. We are looking for music that has been done with Linux Audio software and intend to present it in a concert at the "Kubus" concert hall of ZKM. "Live" performance with Linux Audio software is welcome as well. More information on the conference, registration, accomodation and the "Call for Music" is available from www.zkm.de/lad The current list of speakers (in alphabetical order) and talks is as follows: Fons Adriaensen, 1) AEOLUS - a church organ in your PC 2) Using JAAA for audio measurements Frank Barknecht, Rapid and Reuseable Audio Development With Pd Julien P. Claassen, Linux console - a textbased studio Paul Davis, Adding MIDI to a Digital Audio Workstation Orm Finnendahl, 1) Linux as a Workstation for Composers 2) PD Workshop Bob Ham, LADCCA Steve W. Harris and Jörn Nettingsmeier, Audio Engineering in a Nutshell Steve W. Harris, JACK, JAMin, Mastering Takashi Iwai, ALSA Sucks? - Trouble Shooting for Your Healthy Music Life Jaroslav Kysela, ALSA project - the last year Victor Lazzarini, Developing Spectral Signal Processing Applications Matthias Nagorni, Introduction to Modular Synthesis Han-Wen Nienhuys, LilyPond, a modular, extensible and programmable compiler for high-quality music notation Dave Phillips, 1) Keynote: One Year After: Notable Linux Audio Development in 2003 2) Still Nailing Jelly: An Update on Linux Audio Documentation Projects Abstracts and links to the respective projects are available at www.zkm.de/lad Matthias -- Dr. Matthias Nagorni SuSE Linux AG Maxfeldstr. 5 phone: +49 911 74053375 D - 90409 Nuernberg fax : +49 911 74053483

20 years, 7 months

[linux-audio-dev] Lionstracs Mediastation, LinuxSampler, Linux at NAMM

by Benno Senoner

Hi, just back from NAMM, just a few infos for the interested people: Lionstracs had a booth demoing a preliminary version of the Mediastation X-76 ( http://www.lionstracs.com ) I've read a thread here about people complaining about the price of the keyboard. ( $12,000). I fully agree, the problem was the distributor trying to ask an exaggerated price. Too many men in the middle (distributor, retailer) each one wants a big cut of the pie while the producer of the actual iron usually earns only a fraction of the price the user pays. But you know since the distributor hosted Lionstracs at his booth you cannot complain about the price they want to set :-) Anyway see Domenico's (Lionstracs head) posting: http://www.lionstracs.com/index.php?name=PNphpBB2&file=viewtopic&t=7 the new price will be around $6200 which is much more in line with current keyboards. AFAIK: Korg's flagship the PA X-Pro is about $4500, add mp3 playback expansion, sample RAM expansion (from 16MB to 32MB :-) ) and you get into the $5000 - $5500 which is comparable to the Mediastation X-76 price but the X-76 much more iron (256 DSP voices vs 64, 512MB sample RAM vs 48MB sample ROM, not to mention what you can do in software with the Athlon 2400+ CPU (LinuxSampler, softsynths, ardour etc). Anyway if you want to see a couple of videos of the Mediastation X-76 in action (with crappy audio since it was taken with a camcorder in the noisy NAMM halls): (the guys were playing the keyboard over an mp3/wav song that ran in the background, changing the sounds interactively (mostly by pressing one single button , eg organ family, and then select organ patch) You can play them with mplayer/xine too but I think you need the win32 codecs installed. Length: 2:22 size 23MB http://www.lionstracs.com/~demos/video/x76smooth1.AVI Length: 4:58 size 48MB http://www.lionstracs.com/~demos/video/x76delmar1.AVI (The GUI at 3:00 in the second video is Paul Davis that tells the keyboarder to shut up with his 120dB noise :-) ) Domenico told me probably they will sell individual parts too so people can build their own keyboard without paying an arm and a leg. (eg case + MIDI keys + LCD , custom VGA with Linux supported GFX chip etc) As said this company tries to be open as possible and its success depends on the success of linux audio too, so I think it's in their interest to support LAD people. For example developers could get discounted keyboards in exchange of code etc, there are many possibilities. Domenico is in talks with Mathias Nagorni about coming at the upcoming ZKM with a Mediastation to show it off and that he can meet developers offer some paid work for developing new apps (or adapt existing ones) for the keyboard etc. BTW: many top engineers of the big 3 keyboards makers came to see the X-76, seemed quite puzzled that a penguin-powered keyboard exists :-) regarding LinuxSampler & NAMM read this: http://sourceforge.net/mailarchive/forum.php?thread_id=3758500&forum_id=127… I was quite surprised about the positive reaction. Other Linux stuff was Plugzilla, a hw expander (a Linux PC) that runs VST plugins (I've meet Marc Lindahl and Joe, very nice people), then there was the Muse Research box which is AFAIK similar to Plugzilla and the Hartmann Neuron was there too but I have not had the time to chat with them. (it is linux powered too but they don't tell you so on their website). ok shutting up :-) cheers, Benno http://www.linuxsampler.org

20 years, 8 months

[linux-audio-dev] TAP plugins (follow-up)

by Tom Szilagyi

First of all, a big thank-you goes to Steve Harris for checking my RDF. Second, tap-0.2.0 is out: * New plugin TAP Scaling Limiter This should be an efficient tool for those who want to maximize the loudness of their mixes without audible artifacts, but can be used for other things as well * Added a Bode diagram of the TAP Equalizer filters to the manual. * Changed versioning from x.y-z to x.y.z. Thanks to Frank Barknecht and others for complaining, and sorry I wasn't aware of this problem. The almost but not completely unmemorizable URL is still: http://www.hszk.bme.hu/~st444/tap/tap.html (but i'm thinking about whether i should put it up on SourceForge...) Tom

20 years, 8 months

[linux-audio-dev] linux 2.6.1 realtime lsm, jackstart & ecasound success

by Eric Dantan Rzewnicki

I just completed a successful run of ecasound with my guitar_mix.ecs (attached) on my new box. This is a 15 minutes 5 track session, 4 tracks from disk, one live jack input. Three outputs: stereo wav, mono wav and live monitor. It uses amplify and panning effects controlled by ecasound generic oscillators. Details on the new box and it's current configuration: asus a7v8x-x athlon XP 2800+ (2071.203 MHz) 1.5GB PC2700 RAM 12GB / /dev/hda2 (actually a 40G disk) 160GB /mnt/audio/ /dev/hdc1 drives tuned 2GB swap /dev/hda1 onboard via8235 (M-Audio Delta-66 w/omni i/o -- still in old box) (ymfpci guillemot maxisound fortissimo -- midi only -- still in old box) debian testing (sarge) 2.6.1 (pre-empt on -- kernel.org sources compiled via make-kpkg) realtime-0.0.2 lsm alsa-1.0.2 (drivers, lib, envy24control, tools) drivers: ./configure --with-isapnp=no --with-sequencer=yes --with-oss=no \ --with-cards=dummy,virmidi,ice1712,ymfpci,via82xx libsndfile-1.0.5 from tar.gz. debian only had 1.0.4 jack-0.94.0 ./configure --enable-capabilities --enable-optimize \ --with-default-tmpdir=/mnt/ramfs/ --disable-portaudio ecasound-2.3.2 ./configure --enable-pyecasound --disable-oss --disable-arts \ --with-largefile I started jackd via jackstart like so: jackstart -v -R -d alsa -d via82xx -r 44100 -p 128 -n 3 I run the ecasound session from a script that does some pre and post processing. It assembles the 4 wav input files from other wav's and cuts the output files down to randomly selected 5 minute chunks, fades in and out the beginnings and ends, normalizes and encodes the stereo wav to ogg. The whole session ran on this onboard soundcard without xruns. I switched desktops numerous times in openbox3 and even switched out of X to tty2 to login and change my hostname back (I had changed it while in X and new apps weren't able to start because they couldn't connect to the display. duh ... 8) ). The session ran flawlessly. I'm not exactly sure what the stats jackd puts out when run verbosely mean, but I know the results I saw mean I'll be able to run this session with many more effects at lower latency than I could on my old box ... _And_ I don't have to do it as root! yay! :) The old box is a PII 400 w/768M PC100 RAM. On that box the whole session including pre and post processing takes around 21 minutes. On the new box that overhead is cut way down with the whole session taking only 16 minutes 20 seconds (only 1 min, 20 more than the actual recording time). While running jackd reports load averaging (just measured visually from jackd output, not hard numbers) around 7.5 with max usecs ~220. On the old box using my delta66 I have to run at -p 256 to avoid xruns in this session, load averages around 22 and max usecs around 1350. Admittedly, much of this performance gain is related to the new hardware. But, still , it's very cool that all this newish stuff (lsm, latest alsa, latest ecasound, latest jackd, 2.6 kernel) is working well In other testing with the via chip I've had jack running as low as -p 32 -n 3 with just a couple jack_metro's connected. I have to go down to -p 16 to get a few xruns. Not until -p 8 do things start to get really bad. /proc/interrupts says the card's on IRQ 4, too. I have a few more things to install, configure and test before I move my delta66 and midi setup over to the new box. But, these initial tests are very exciting. I just had to share. Thank you to all the developers for all this excellent software. And thanks to all the list members, too. :) -Eric Rz. # eric(a)zhevny.com guitar_mix chainsetup file ### general -b:128 -B:rtlowlatency -n:guitar_mix -X -t:902.802 ### audio inputs -a:1,6,11 -i:track1.wav -a:2,7,12 -i:track2.wav -a:3,8,13 -i:track3.wav -a:4,9,14 -i:track4.wav -a:5,10,15 -i:jack_alsa #-a:5,10,15 -f:16,1,44100 -i alsahw,0 ### audio outputs # live output -a:1,2,3,4,5 -f:16,2,44100 -o jack_alsa #-a:1,2,3,4,5 -f:16,2,44100 -o alsahw,0,0 # file outputs ### FIXME: change this output to .ogg when crop and fades work -a:6,7,8,9,10 -f:16,2,44100 -o:/mnt/audio/in_progress/guitar_mix/stereo_out.wav -a:11,12,13,14,15 -f:16,1,44100 -o:/mnt/audio/in_progress/guitar_mix/mono_out.wav ### chain operators and controllers # live output -a:1 -erc:1,2 -epp:0 -kos:1,0,100,0.02,0 -ea:0 -kos:1,0,200,0.01,0 -a:2 -erc:1,2 -epp:0 -kos:1,0,100,0.04,0 -ea:0 -kos:1,0,200,0.02,0 -a:3 -erc:1,2 -epp:0 -kos:1,0,100,0.06,0 -ea:0 -kos:1,0,200,0.03,0 -a:4 -erc:1,2 -epp:0 -kos:1,0,100,0.08,0 -ea:0 -kos:1,0,200,0.04,0 -a:5 -erc:1,2 -epp:50 -ea:205 # stereo file out for .ogg -a:6 -erc:1,2 -epp:0 -kos:1,0,100,0.02,0 -ea:0 -kos:1,0,200,0.01,0 -a:7 -erc:1,2 -epp:0 -kos:1,0,100,0.04,0 -ea:0 -kos:1,0,200,0.02,0 -a:8 -erc:1,2 -epp:0 -kos:1,0,100,0.06,0 -ea:0 -kos:1,0,200,0.03,0 -a:9 -erc:1,2 -epp:0 -kos:1,0,100,0.08,0 -ea:0 -kos:1,0,200,0.04,0 -a:10 -erc:1,2 -epp:50 -ea:205 ### crop and fade in/out ### generate an effects preset file for this in preprocessing #-a:6,7,8,9,10 -ea:0 -kl:1,0,100,4,0,0,10,1,290,1,300,0 # mono file out for pool -a:11 -ea:0 -kos:1,0,200,0.01,0 -a:12 -ea:0 -kos:1,0,200,0.02,0 -a:13 -ea:0 -kos:1,0,200,0.03,0 -a:14 -ea:0 -kos:1,0,200,0.04,0 -a:15 -ea:205 ### crop and fade in/out ### generate an effects preset file for this in preprocessing #-a:11,12,13,14,15 -gc:$pos,300 -ea:100 -klg:0,0,100,4,0,0,10,1,290,1,300,0

20 years, 8 months

[linux-audio-dev] [OT] Numbers, numbers, numbers...

by Rohan Drape

> that's interesting. elk-scheme says about this: > > > (exact? (* 0 440.0)) > #f > > guess something to be fixed, if #t is the R5RS answer... Actually, R5RS says: An operation may, however, return an exact result if it can prove that the value of the result is unaffected by the inexactness of its arguments. For example, multiplication of any number by an exact zero may produce an exact zero result, even if the other argument is inexact. In some environments this sort of thing can be a fast path. This actually is exactly what some people really do not like about R5RS. Personally, the fact that both Stalin and mzscheme actually exist suggests a curious sort of happiness... Regards, Rohan This reminds me of pop music, "I'm no fucking Buddhist, but this is enlightenment"... :?

20 years, 8 months

[linux-audio-dev] alsa sequencer filter client

by Garett Shulman

Hello, I am trying to create a very simple midi filter client for the alsa sequencer based on aseqview-0.1.4. I have alsa 0.9.8. This code shows the input and the output port in aconnect when executed. And, when the raw_midi client is connected The callback does get called when I play keys on my piano. However, Its as though the message is getting sent back to this client and not on to the next client. The process_event function keeps getting called over and over again with the same message when I hit one piano key. It's as though it is sending itself the message. Any Ideas are greatly appreciated. -Garett #include "portlib.h" int process_event(port_t *p, int type, snd_seq_event_t *ev, int *priate_data) { port_write_event(p, ev, 0); } int main() { unsigned int caps = SND_SEQ_PORT_CAP_WRITE | SND_SEQ_PORT_CAP_SUBS_WRITE | SND_SEQ_PORT_CAP_READ | SND_SEQ_PORT_CAP_SUBS_READ; port_client_t *client = port_client_new("MIDI filter", SND_SEQ_OPEN_DUPLEX); port_t *port = port_attach(client, "FILTER port", caps, SND_SEQ_PORT_TYPE_MIDI_GENERIC); int *priv_data; /* add callback */ port_add_callback(port, PORT_MIDI_EVENT_CB, (port_callback_t)process_event, priv_data); port_client_do_loop(client); return port_detach(port); }

20 years, 8 months

[linux-audio-dev] Re: linux-audio-dev Digest, Vol 4, Issue 61

by rd＠alphalink.com.au

> > 440.0 is still an exact integer > Hunh? What Scheme is this? The Scheme spec says > "It [a numerical constant] is inexact if it contains a decimal point..." Yes, my mistake, I meant to say that 440.0 is still an integer. Welcome to MzScheme version 205.8, Copyright (c) 1995-2003 PLT > (integer? 440.0) #t > It also says "inexactness is a contagious property of a number". Welcome to MzScheme version 205.8, Copyright (c) 1995-2003 PLT > (exact? (* 0 440.0)) #t This is explicitly mentioned in R5RS, and exact zeroes turn up all the time in controller input streams, from midi controllers for example. > In any case, type checks are trivial. Well yes, it is the the type check that determines the OSC encoding, but without explicit type tagging there is no way of knowing if 1.0 should be encoded as a single or double precision value? Or in fact if it is a 'proper' integer that has been contaminated somewhere along its journey? My actual argument regards all this is that OSC is a good thing to have in user space, and that in user space 440 should be a valid frequency input, and 1.0 a valid index input. I think it is an amazing contribution of SuperCollider that composers find the language and the environment approachable. The 'scsynth' OSC implementation is part of this contribution, we should live up to it's example. Regards, Rohan An aside: I bought up scheme as a counterexample to Lua to show that just because a language has a lot of numerical types does not help with getting OSC encoding `correct'. (integer? 1.0) => #t (integer? 1) => #t (exact? 1.0) => #f (exact? 1) => #t (= 1 1.0) => #t (eq? 1 1) => #t (eq? 1.0 1.0) => #f (eq? 1 1.0) => #f These questions are interesting, and of course not peculiar to lisps, but implementors should bend over backwards trying to make sure that composers don't *need* to ponder the mysteries of inexact integers to tune an instrument.

20 years, 8 months

[linux-audio-dev] Re: linux-audio-dev Digest, Vol 4, Issue 62

by Jason Walton

Four hours of work for an IPOD >>> linux-audio-dev-request(a)music.columbia.edu 1/26/2004 10:02:19 AM >>> Send linux-audio-dev mailing list submissions to linux-audio-dev(a)music.columbia.edu To subscribe or unsubscribe via the World Wide Web, visit http://music.columbia.edu/mailman/listinfo/linux-audio-dev or, via email, send a message with subject or body 'help' to linux-audio-dev-request(a)music.columbia.edu You can reach the person managing the list at linux-audio-dev-owner(a)music.columbia.edu When replying, please edit your Subject line so it is more specific than "Re: Contents of linux-audio-dev digest..." Today's Topics: 1. Re: [RFC] Lite OSC API (Kjetil Svalastog Matheussen) 2. RE: Modulars (Brad Arant) 3. Modulars (Kjetil Svalastog Matheussen) ---------------------------------------------------------------------- Message: 1 Date: Mon, 26 Jan 2004 17:35:09 +0100 (CET) From: Kjetil Svalastog Matheussen <k.s.matheussen(a)notam02.no> Subject: [linux-audio-dev] Re: [RFC] Lite OSC API To: linux-audio-dev(a)music.columbia.edu Message-ID: <Pine.LNX.4.58-L.0401261731570.12025(a)iannis.uio.no> Content-Type: TEXT/PLAIN; charset=US-ASCII rd(a)alphalink.com.au: > > Since I think this is really important I will give an example, and from the > other end of a continuum. I use scheme for most of my music work. > Scheme has a very sophisticated numerical tower. I might write (-> > "/n_set" 1001 "freq" 440) to set the frequency of an instrument at SC3. > The OSC encoder encodes values based on their lisp type, 1001 is an > integer and gets encoded as 'i'. Lets assume that to the receiver the > frequency argument is a float, here I lose because 440 is an integer. I > argue that a receiver implemented like that is just wrong, that an integer > 440 frequency is completely valid, and SC3 thankfully agrees and plays > the right note. > For what scheme implementation are you using? And where can I get what you are using? -- ------------------------------ Message: 2 Date: Mon, 26 Jan 2004 08:51:19 -0800 From: "Brad Arant" <barant(a)barant.com> Subject: RE: [linux-audio-dev] Modulars To: "'The Linux Audio Developers' Mailing List'" <linux-audio-dev(a)music.columbia.edu> Message-ID: <200401261655.i0QGt1EO021207(a)roar.music.columbia.edu> Content-Type: text/plain; charset="us-ascii" I have a few more for you since I still own some of these - don't hin anybody has done emulators for them but I thought I would at least let you know they are there. PAIA Modular ARIES System II -----Original Message----- From: linux-audio-dev-bounces(a)music.columbia.edu [mailto:linux-audio-dev-bounces@music.columbia.edu] On Behalf Of Juhana Sadeharju Sent: Monday, January 26, 2004 8:20 AM To: linux-audio-dev(a)music.columbia.edu Subject: [linux-audio-dev] Modulars Hello. Below is an unfinished list of modular synths. Better than nothing. This kind of simple lists gives a good overall picture of the situation. For us developers the list should have following info: have source code? have manuals? have screenshots? have example instrument files? I think I have collected enough all of that. BTW, the paper on first interactive graphics system (I.Sutherland's SketchPad 1963) gives the idea that the drawn circuit diagram could directly be used as input to the circuit simulators. Digital modulars have been around as long but I could not find anything (between 1963-1980) on having a graphical frontend to them. Of course, I do not have access to many old papers. Regards, Juhana ============================================================================ = Source Graph Script Name Code GUI UI Author/Notes ---------------------------------------------------------------------------- - AlsaModularSynth Yes Yes No M.Nagorni & F.Adriaensen AnalogBox No Yes ? ? Arts Yes Yes No ? AudioMulch No Yes ? Ross Bencina BlockCompiler OnHold No Yes M. Karjalainen Building Blocks No Yes ? MIDI only CPS No Yes ? Niels Gorisse Csound Yes No Yes Barry Vercoe Cmusic Yes No Yes ? DirectCsound ? ? ? ? DreamStation No ? ? Audio Simulation Fugue Yes No Yes ? Gabriel ? Yes ? ? Galan Yes Yes ? ? Gdam Yes Yes ? ? Harmonizer/Vsig No Yes Yes Eventide Infinity No Yes ? Sound Quest InstrumentBuilder No Yes ? Mark Trombino, Csound frontend jMax Yes Yes Yes IRCAM JSyn No ? ? ? Kyma No ? ? Symbolic Sound LabView No Yes Yes National Instruments Matlab/Simulink No Yes ? Mathworks MAX/MSP No Yes ? Cycling '74 Moog Modular V No ? ? Arturia NMEdit Yes Yes No ? Nord Modular No Yes No Clavia Nyquist Yes No Yes R.B. Dannenberg OASYS No ? ? Korg OpenMusic ? Yes ? IRCAM PatchWork ? ? ? ? PD Yes Yes No Miller Puckette Pulsar/Scope/Noah No Yes No Creamware PSK Yes No Yes ? Ptolemy Yes Yes ? ? Quasimodo Yes Yes No Paul Davis Reaktor No Yes No Native Instruments Reality No ? ? Seer Systems SAOL Yes No Yes ? Scilab/Scicos Yes ? ? ? Sildex/Signal ? ? ? ? Spiralsynthmodular Yes Yes ? ? SPT ? ? ? Synthetic Intelligence Supercollider No ? Yes James McCartney SynC Modular No ? ? ? SynthBuilder Yes Yes ? Staccato Systems Tassman No Yes No Applied Acoustics Tempest No Yes ? Virtual Labs Vaz Modular No Yes No STL/Martin Fay VirSyn No ? ? ? Virtual Waves No Yes ? Synoptic Visual Orchestra No ? ? ? WaveWarp No ? ? Sounds Logical ============================================================================ = ------------------------------ Message: 3 Date: Mon, 26 Jan 2004 17:51:46 +0100 (CET) From: Kjetil Svalastog Matheussen <k.s.matheussen(a)notam02.no> Subject: [linux-audio-dev] Modulars To: linux-audio-dev(a)music.columbia.edu Message-ID: <Pine.LNX.4.58-L.0401261742350.12025(a)iannis.uio.no> Content-Type: TEXT/PLAIN; charset=US-ASCII Juhana Sadeharju: > > Hello. > > Below is an unfinished list of modular synths. Better than nothing. > This kind of simple lists gives a good overall picture of the situation. > > For us developers the list should have following info: have source code? > have manuals? have screenshots? have example instrument files? > I think I have collected enough all of that. > > BTW, the paper on first interactive graphics system (I.Sutherland's > SketchPad 1963) gives the idea that the drawn circuit diagram could > directly be used as input to the circuit simulators. > > Digital modulars have been around as long but I could not find > anything (between 1963-1980) on having a graphical frontend to them. > Of course, I do not have access to many old papers. > There was one with a graphical interface: MusicBox No Yes No David Fahrland And its from the 64-69 or something, implemented in fortran, had a custom made graphical interface, and supposedly was very much like Max, only 20 years earlier. The machine was placed at EMS/Sweden. >From google I only found this information: http://www.ballade.no/nmi.nsf/doc/art2003100811103357431448 (At the top there is a picture of the machine) -- ------------------------------ _______________________________________________ linux-audio-dev mailing list linux-audio-dev(a)music.columbia.edu http://music.columbia.edu/mailman/listinfo/linux-audio-dev End of linux-audio-dev Digest, Vol 4, Issue 62 **********************************************

20 years, 8 months

[linux-audio-dev] Re: linux-audio-dev Digest, Vol 4, Issue 61

by Bill Schottstaedt

> 440.0 is still an exact integer Hunh? What Scheme is this? The Scheme spec says "It [a numerical constant] is inexact if it contains a decimal point..." It also says "inexactness is a contagious property of a number". In any case, type checks are trivial.

20 years, 8 months

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Linux-audio-dev