Linux-audio-dev

linux-audio-dev@lists.linuxaudio.org

6 participants
7504 discussions

Re: [linux-audio-dev] Looking for some PR stuff related to Jack

by Benno Senoner

Paul what you described is very unfortunate. Although I have not had time to perform any tests lately, I always had the bad feeling that the out-of-process model would cost us some performance because the kernel would screw us in some way. As said, two years ago I was able to achieve 2.1msec latency with the LinuxSampler proof-of-concept code and I think for many low-latency fetishists (a drummer playing a midi drumkit) it would be hard to give up these excellent response times especially since we are talking about a software implementation of a MIDI instrument that ideally should as be as good as the hardware counterparts in terms of playability. Regarding the sampler we are currently solving other basic design problems so for now I think we can let this issue aside since we will probably perform the first tests with direct ALSA/OSS output and standard out-of-process JACK mode (in the latter case not expecting to get extremely low latencies), but in order to get latencies at par with ALSA , when using JACK the in-process model is as you said probably mandatory. (and according to Steve Harris JACK would need some extensions to handle the loading of these in-process jack "plugins" at run time). For now we will probably test the extremely low latency cases using direct audio output otherwise it would be hard to isolate timing problems. (Was the deadline miss due to the sampler or due to jack not getting scheduled in time ? -> double frustration :-) ). Paul, do you think that in (near) future it will be possible to run an entire virtual studio using jack's in-process model that runs all active apps (eg ardour, sampler, snyth, FXes etc) as plugins of a single process ? This would be really useful for those that need these extremely low latencies while at the same time being able to access to a fully fledged virtual studio where your only limitation is the CPU speed and RAM/disk speed/size. cheers, Benno Paul Davis wrote: > the JACK data i provided covers an out-of-process client. the > all-in-process client case has the same latency as ALSA only. > > the difference between the two is that although 99.9% of the time, the > kernel operates as desired and JACK can provide ALSA-only/in-process > performance in the out-of-process case, every once in a few tens of > thousands of process() cycles, the kernel messes up our scheduling and > this causes an xrun. tracking this down is an important but very, very > difficult case. its possible that it may never be solved. > > --p -- http://linuxsampler.sourceforge.net Building a professional grade software sampler for Linux. Please help us designing and developing it.

22 years, 8 months

Re: [linux-audio-dev] Gigasampler vs Halion PR war

by Benno Senoner

I suspect that Steinberg (and others) went the wait-and-see attitude. They recognized that the patent was simply too broad and that an eventual lawsuit would have caused quite a controversy in the audio world. (Perhaps damaging good relations between Tascam and other audio sw producers, generating bad press and probably in the end resulting in the patent declared invalid). Plus it seems that soon there will be new contenders on the commercial disk based samplers area.I believe that regarding the patent they took the same stance as (probably) Steinberg did. For example Native Instrument announced that they will add disk streaming support to their Kontakt sampler this month. ---- http://www.nativeinstruments.de/index.php?kontakt_us Direct From Disc extension In November 2002 a free Mac and PC update for registered KONTAKT users will add the Direct From Disc extension. This feature will enable KONTAKT to play samples directly from the hard drive. Sample size will no longer be limited by the amount of physical RAM - an instrument can be as large as available hard drive space. All instruments utilizing this technology will load many times faster than RAM-based instruments. --- You are probably aware that Invision has a patent about the PC softsynth this means that there are literally hundreds of such apps "violating" the patent. The idea of caching data in RAM that resides on a mass storage device is just too old, it has existed since the first mass storage device was introduced. Anyway if you care, in the good old Amiga days I implemented routines that allowed the streaming of large audio clips from disk and CDROM with instant play by caching the first part of the clip in RAM. It was 1991-92 I believe the project was part of an italian version of the Grolier Encyclopedia for the Amiga and that strange CD-like player amiga device. (I do not remember the name anymore). This is just a small example of "prior art" :-) I guess there are hundreds other of examples too. I fully agree with what David Burrows said. :-) cheers, Benno Paul Davis wrote: >>Do we know what Steinberg did about this, if anything? >i asked karl steinberg. he was unwilling to say anything about it. -- http://linuxsampler.sourceforge.net Building a professional grade software sampler for Linux. Please help us designing and developing it.

22 years, 8 months

[linux-audio-dev] Gigasampler vs Halion PR war

by Benno Senoner

Gigasampler / Gigastudio vs Halion "comparison": http://www.nemesysmusic.com/news/NewsLet/newslet_Mar2002.html no comment :-) Benno -- http://linuxsampler.sourceforge.net Building a professional grade software sampler for Linux. Please help us designing and developing it.

22 years, 8 months

[linux-audio-dev] spiced 12AX7, plots, clipper.so

by Tim Goetze

after taking some plots from a simple 12AX7 preamp spice model, i've decided to try naive asymmetric hard-clipping, without any antialiasing measures. http://quitte.de/12AX7-clipping.html has the plots, a link to the spice model source, the hard clipper ladspa implementation and the mandatory mp3: http://quitte.de/brat.mp3 which is the output from this signal chain: guitar (bridge pickup, humbucker) -> HiPass (200) -> Gain (db = 30) -> clipper.so -> unmatched.so it may not be a true amp model, but to me ... it rocks. i'm still pondering whether antialiasing is needed, and if so, how to do it (fit in a windowed sinc where the signal hits the clipping threshold? thoughts welcome). for building a decent 'virtual amp', i imagine some combination of Steve's excellent valve and valve_rect for a good, smooth and warm lowish-gain tone, a bit of tunable eq and this kind of hard-clipping for hi-gain, harsh distortion topped off with a cabinet response will just about do it for me. tim

22 years, 8 months

Re: [linux-audio-dev] Re: image problem [was Re: [Alsa-devel] help for a levelmeter]

by John Lazzaro

> Paul Davis <paul(a)linuxaudiosystems.com> writes: > > OS X is a major challenge to the linux audio religious faithful. It's an opportunity, too, though -- there's a segment of the Mac population that can barely justify the cost premium for Mac hardware, because they use the hardware for recreation or avocation, not as a tool to make more money. If the Linux folks: -- Port the popular apps to OS X, and improve them so that the honest and budget-conscious Mac folks adopt the free Linux apps rather than pirate commercial apps. -- Keep those apps running just as well (or better) under Linux, and evangelize the hardware cost differential. Linux audio could probably carve out the budget-conscious Mac subset over a period of 3-5 years, which (random guess) is 100,000 users or so. That's not my motivation for putting sfront on OS X -- that has more to do with just reaching more users to popularize the underlying standards -- but it might be a motivation for the mainstream Linux GUI audio apps to start a serious OS X porting effort. ------------------------------------------------------------------------- John Lazzaro -- Research Specialist -- CS Division -- EECS -- UC Berkeley lazzaro [at] cs [dot] berkeley [dot] edu www.cs.berkeley.edu/~lazzaro -------------------------------------------------------------------------

22 years, 8 months

Re: [linux-audio-dev] Re: image problem [was Re: [Alsa-devel] help for a levelmeter]

by CK

Thanks paul, I have this problem once in a while as a die hard opensource fan I didn't go out and buy software for years now and - a point that even in the linux community many people don't seem to understand - not because I'm a cheap- skate or ex-w4r3z kid that doesn't understand how commercial sw production works (no that I would but I guess I get the overall picture) _but_ because also on an application level I want to have access to the sources, to tailor to my needs, to figure out inner workings without bothering tech support, to fix things. I had this discussion with a cycling74 employee recently explaining that I might buy max/msp but _not_ without sources, I'd sign their soul-demanding NDA, pay more - whatever to be able to change #define MAXINLETS 64 in any objects src to what I believe is needed ... I read: [very insightful posting snipped] > improve it. OS X does not let me do this because it isn't as > tinker-friendly as linux. make this a 'thinker-friendly' aswell (SCNR maybe it's because I'm .eu) cheers, x -- chris(a)lo-res.org Postmodernism is german romanticism with better http://pilot.fm/ special effects. (Jeff Keuss / via ctheory.com)

22 years, 8 months

re:[linux-audio-dev] Open Music

by assayag gerard

> From: David Gerard Matthews <dgm4+(a)pitt.edu> > To: linux-audio-dev(a)music.columbia.edu > Subject: [linux-audio-dev] Open Music > Date: 25 Oct 2002 23:39:57 -0400 > > Is anyone working on this: http://www.ircam.fr/equipes/repmus/OpenMusic? > Apparently they GPL'd the sources, and you can download it, but it's > written in Lisp, and MCL PPC Lisp at that. However, as they put it: > > "At the beginning, this will make sense only to people owning the > Digitool compiler. Although we are conscious that this limitation does > not fit clearly into the GPL framework, we think that making the sources > available is an oppurtunity to raise collaborations leading to new > versions of OM that would depend only on open sources compiler, > particularly on linux platforms" > > I did speak with some Ircam people at Darmstadt this past summer, and I > don't think they really have the interest in doing the port themselves. > However, Ircam certainly isn't anti-Linux, so they might be > able/willing to help/be persuaded to work on it. (François, and > Norbert, if you're on this list, feel free to comment.) > > -dgm Until now, we did'nt have the internal resources to develop a full linux version of OpenMusic. However a fragmental prototype of OM/Linux based on cmucl had been developed by Camilo Rueda and his team at Cali Univsersity in Colombia. See http://escher.puj.edu.co/openmusic/ Things are changing now, thanks to the Agnula (A GNU Linux Audio Distribution) project. This project is funded by the European Commission, coordinated by Tempo Reale in Florence, and involves Ircam (coordinator : Francois Dechelle) as a partner. See http://www.agnula.org/ Thanks to Francois Dechelle's support, we may now envision the integration of OmLinux in the following monthes, as well as the definition of a coherent development strategy between OMLinux and OM/OsX. More info to come soon... Gérard Assayag Music Representation Team IRCAM

22 years, 8 months

[linux-audio-dev] work is what happens while we're debating GUIs

by Paul Davis

this is a VSTi: http://www.harmony-central.com/Newp/2002/Oddity-large.jpg slurp ;)

22 years, 8 months

[linux-audio-dev] Education Discounts on Microsoft, Adobe, & Macromedia

by discounts＠Academic-Edition-Software.com

Adobe Photoshop at 52% OFF, Macromedia Studio MX at 76% OFF, Microsoft Visual Studio.NET at 91% OFF, Office XP Standard at 70% OFF, Adobe Design Collection at 61% OFF Dear Students, Teachers, Faculty, Staff and Schools: COMPUTER PRODUCTS FOR EDUCATION is pleased to offer to you the best prices on ACADEMIC EDITION SOFTWARE from MICROSOFT, ADOBE, MACROMEDIA, COREL, and others - AT UP TO 84% OFF STANDARD COMMERCIAL RETAIL PRICES. If you are a Qualified Education Buyer (defined below) you can purchase software products from CPE at HUGE DISCOUNTS - year-round! Qualified Education Buyers include K-12 and HIGHER EDUCATION STUDENTS, TEACHERS, FACULTY, STAFF, and SCHOOLS. Visit www.academic-edition-software.com or call us 800-679-7007 to order any of the products below. ---------------------- Education Standard You ADOBE (Windows & Mac): Price Retail Save! ---------------------- --------- ------ ----- Acrobat 5.0 $57.95 $249 77% After Effects 5.5 $289.95 $649 55% GoLive 6.0/LiveMotion 2.0 $84.95 $399 79% Illustrator 10.0 $89.95 $399 77% InDesign 2.0 $189.95 $699 73% PageMaker 7.0 $279.95 $499 44% PageMaker 7.0 Upgrade $89.95 - - Photoshop 7.0 $289.95 $609 52% Photoshop 7.0 Upgrade $149.95 - - Premiere 6.5 $224.95 $549 59% Premiere 6.5 Upgrade $149.95 - - *******Adobe Collections********** Design Collection 6.0 $389.95 $999 61% (InDesign 2/Photoshop 7/Illustrator 10/Acrobat 5) Digital Video Collection 8.0 $489.95 $1199 60% (Premiere 6.5/AfterEffects 5.5/Photoshop 7/Illustr 10) Publishing Collection 12.0 $489.95 $999 51% (PageMaker 7/Photoshop 7/Illustrator 10/Acrobat 5) Web Collection 5.0 $339.95 $999 65% (Photoshop 7/Illustrator 10/GoLive 6/LiveMotion 2) TO ORDER: www.academic-edition-software.com Or call 800-679-7007. ---------------------- Education Commercial You MACROMEDIA (Windows & Mac): Price Retail Save! ---------------------- --------- ------ ----- Authorware 6.5 E-Doc $349.95 $2699 87% ColdFusion MX Server Pro $529.95 $799 34% Director 8.5 Student Edition $189.95 $1199 84% Dreamweaver MX $98.95 $299 67% eLearning Studio $489.95 $2999 84% (Authorware 6/FlashMX/DreamweaverMX) Fireworks MX $98.95 $199 50% Flash MX $98.95 $399 75% FreeHand 10 $98.95 $399 75% STUDIO MX $189.95 $799 76% (Dreamweaver MX/Fireworks MX/Flash MX/Freehand 10/ColdFusion MX) TO ORDER: www.academic-edition-software.com Or call 800-679-7007. --------------------------- Education Standard You Microsoft: Price Retail Save! --------------------------- --------- ------ ----- Office XP Standard $148.95 $479 70% Office XP Professional $199.95 $579 66% Office 2001 Macintosh $209.95 $499 60% Office Mac v.X for Mac OS X $215.95 $459 53% FrontPage 2002 $79.95 $169 53% Publisher 2002 $79.95 $129 38% Visio Standard 2002 $69.95 $199 65% Visio Professional 2002 $159.95 $499 69% Visual Basic.Net Standard $59.95 $109 45% Visual C++.Net Standard $59.95 $109 45% Visual C#(sharp).Net Standard $59.95 $109 45% Visual Studio.Net Professional $98.95 $1079 91% Windows XP Professional Upg* $ 94.95 $299 68% Windows 2000 Professional Upg* $129.95 $319 59% * Windows XP/2000 Pro Upgrade will install on a blank hard drive. TO ORDER: www.academic-edition-software.com Or call 800-679-7007. --------------------------- Education Standard You Corel: Price Retail Save! --------------------------- --------- ------ ----- Wordperfect Office 2002 w/Voice $99.95 $389 74% Corel Draw 11.0 $142.95 $549 72% Procreate Painter 7.0 $229.95 $549 60% ---------- LICENSING: ---------- For school purchases of five to ten (5-10) or more units, depending on the product, please call 800-679-7007 for even deeper discounts on license packs. ---------- For hundreds of other software products available from CPE at similar discounts, visit our website at www.academic-edition-software.com or call us at 800-679-7007. Academic Edition software is exactly the same as the Full-Retail version except that it has been deeply discounted for Qualified Education Buyers. No verification is required for purchases of Microsoft Office XP Standard. For all other products, purchasers must provide fax-verification of status as being a current faculty, staff, or student. After placing your order, you simply fax to CPE either: (a) a copy of a current picture School I.D. Card or, (b) a current paycheck stub with an alternative picture I.D. (drivers license, etc.). Schools may purchase by faxing a valid school purchase order. For more details, visit our web site at www.academic-edition-software.com. All software sold by CPE is authentic original software from the manufacturer. THESE ARE NOT PIRATED COPIES. ALL SOFTWARE COMES IN ORIGINAL MANUFACTURER'S BOXES AND INCLUDES A VALID LICENSE. CPE is an Authorized Education Reseller for Microsoft, Adobe, Corel, Symantec and many other major software manufacturers. CPE is the only national software distributor committed to providing the lowest prices EXCLUSIVELY to the Education community with the best customer service. All prices and availability are subject to change without notice. ___________________ We hope you find this message valuable. If you do not wish to receive special offers and updates from academic-edition-software.com, please REPLY to this message, and enter the word 'REMOVE' in the subject line. E-MAIL MARKETING: NO WASTED PAPER - SAVES TREES - GOOD FOR THE ENVIRONMENT! DELETE WITH ONE SIMPLE KEYSTROKE! ___________________ THANK YOU!

22 years, 8 months

Re: [linux-audio-dev] 3MU as LADSPA plugin?

by Mario Lang

"Richard Furse" <rf015d9821(a)blueyonder.co.uk> writes: > Sounds like an excellent idea... Only problem is that 3MU has a sequence setting in his config file too, which makes porting to LADSPA a bit strange. LADSPA doesn't have any string-value fascilities, or anything else for sequencer data, right? > Looked for this tk3MU thing and found TromVSpace, now obsolete. You can find tk3MU on the linux-sound page, right next to 3MU. And for those curious how such a .3MU file should actually look like, I managed to work one out, from reading the tk3MU sources: ---------------------------------------<>------------------------------------- #!3MU portamento-time = 50 attack = 2.1 release = 6.9 repetitions = 16 cutoff = 100 decay = 65 filter-amount = 190 filter-poles = 10 resonance = 39 tempo = 40 waveform = "square" cutoff = 13 Note = { c0 c1 d1 c0 c1 d1 e0 d#1 } note-mode = { normal normal normal normal normal normal normal normal } note-length = { legato normal legato legato legato normal legato normal } note-portamento = { 1 0 0 1 0 0 1 0 } ---------------------------------------<>------------------------------------- -- CYa, Mario

22 years, 8 months

Jump to page:

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

2003

2002

Linux-audio-dev