Linux-audio-user September 2011

linux-audio-user@lists.linuxaudio.org

104 participants
80 discussions

Steinway_IMIS2.2 soundfont (no loops fix)

by Roberto Gordo Saez

This is Steinway_IMIS soundfont, version 2.2. ftp://musix.ourproject.org/pub/musix/sf2/Steinway_IMIS2.2 This version fixes the issue with loops. I hope this is the good one and there are no more remaining major bugs. Marcos is a little busy right now, so he asked me to make this fix. He is thinking to make other improvements, so expect more updates soon.

1 year, 6 months

[linux-audio-user] Sub-harmonic generator? (LADSPA or VST)

by Tim Howard

Hello, Does anyone know of a good plugin that will generate subharmonics? I would like to put a little more low frequency "oomph" into my bass track. Preferrable LADSPA, but VST would work, too. Thanks for any help! -TimH

8 years

Alternative FluidSynth GUI?

by Dan Capp

Research tells me that QSynth seems to be the only currently available/usable GUI for FluidSynth, but I get big xruns whenever I try and use it. FluidSynth itself doesn't cause me problems (I know because I'm able to use the FluidSynth-DSSI plugin fine in Rosegarden etc). The problem is that I want to use FluidSynth with Ardour3, but Ardour3 doesn't support DSSI plugins yet. So the only solution I have is to find a standalone interface for FluidSynth and then to link up using Jack. I looked at the old GUI 'FluidGUI' but it seems to be so old that it won't properly install on recent versions of Ubuntu. So does anyone know of: 1) A GUI for FluidSynth other than QSynth and FluidGUI?... or 2) An application other than the above 2 which would allow me to load soundfonts? Thanks in advance. - Dan

8 years, 9 months

Re: [LAU] An appeal to famous artists?

by Aurélien Leblond

> My question/answer: "How much are you willing to do to make it happen?" Well I'm not exactly sure anymore to be honest, I didn't think my message would start such a rant! But after reading all the answered, two things seem to stand out: 1. A lot of the FOSS music software are not for the general public. I wouldn't agree myself (I mean, Ardour, Hydrogen or Yoshimi are as straight forward as a music software can be)... And for that, nothing much I/we can do but participate to the code (which I do when I can), make donations (which I do every year), provide feedback, provide bug reports, etc, etc, etc... And obvisouly use the software and produce some tunes! Which I do too: http://soundcloud.com/a-violent-whisper (Although now I realise that nowhere I say that it's completely recorded/produced with only FOSS softwares!) 2. More interrestingly, the "appeal to famous artists" didn't seem to be well received... What seems to come out though is that although the FOSS community seems to be good to produce software, we don't seem to be good at advertising it :) - Ardour has...49 followers on facebook... Nothing on the wall... - Hydrogen...94...and one entry on the wall... - Couldn't find a # tag for any of these on Twitter... I know I know, we are not advertisers, we are developers! But what if a small group of us (and yeah, including me :)) would do that? How do we go about that? We have loads of website/tools to share code and software (sourceforge, svn, git, etc..), but none to organise ourself into a community to create some kind of organised campagn of advertisement on social networks (or other tools)! What I have in mind is what was done by ThisOneIsOnUs... what they did for their production is exacty what we do every day for FOSS software... Any ideas? > -Mike Mazarick > > PS - sorry for the top posting, but I thought it better in this instance > > >> -----Original Message----- >> From: Aurélien Leblond [mailto:blablack@gmail.com] >> Sent: Monday, August 01, 2011 11:07 AM >> To: linux-audio-user(a)lists.linuxaudio.org >> Subject: [LAU] An appeal to famous artists? >> >> I'm writing this post because of a few experiences I had over the >> years into world of amateur music production (but I'm sure it does >> applies to every artistic domains). >> >> I'm an amateur musician and a Linux enthusiast, and even though I work >> as a developer, my professional activity doesn't directly have >> anything to do with both these >> domains (although in the case of Linux this is quite a shame, but >> that's another subject). But one thing I am surrounded with at work is >> fellow musicians. >> >> I have setup a pretty nice home studio in my flat: electronic drumkit, >> alright USB sound-card, good quality speakers, electric guitar, pretty >> big guitar fx board, USB >> keyboard with a lot of knobs, few synthesizers and......a laptop >> running Ubuntu, Ardour, Hydrogen, AlsaModularSynth, Yoshimi, LV2, etc, >> etc and etc... >> >> A few of these colleagues came to my place to play music, and all of >> them were impressed by the level of investment, and invariably the >> first question that comes >> up is the price of all the hardware and software... So when I >> explained that I gathered the hardware over the last few years and >> that the software is free, I always get >> that little wink and smile: >> - “haaaa 'free'? Bittorent yeah?” >> - “no no no...not THAT free... I'm using Linux, and I'm trying to make >> a point of using only free software in my music production... Actually >> it's not free as you think it is, >> I do try to make some donations every year, blablabla...” >> And invariably, I get “the look” (you all know which one I'm talking >> about)... >> >> As the sessions go on and my colleagues see the different software in >> actions, they always start to make the comparison with what they use >> in other OS: “Wouah I >> can't do that with my drum machine! And this software Ardour is pretty >> cool, and I really like the sound of this synthesizer! What is it? >> AlsaModularMix you say? >> Well it looks weird but I like it!”... >> >> Then as the conversation goes on on gears and software, it generally >> goes like this “oh, I bought this synth because Trent Reznor from Nine >> Inch Nails is using it >> and I wanted to get that sound...”, “this guitar fx? Bought it because >> the guys in Slayer are using it and I love” (yes all my mates and >> myself are metal heads!). >> >> So I started to think... And I thought a little bit more... All the >> people I know in the music world, we always use references to known >> artist: “Trent Reznor uses this, >> The Edge uses that, Brian Eno has this synth, etc”. There is even a >> website that list the gears used by famous guitar players. >> >> I have a couple of friends back in my home country who are trying to >> build up a recording studio... They work 100 hours a week recording >> and promoting local bands, >> they eat pasta because the money is tight.......but they spent I don't >> know how much into brand new Macs and software licenses... >> >> I can hear you from here already “WHY DID YOU NOT TELL THEM ABOUT >> LINUX???” >> >> Well......I did: >> - “Yeah RIGHT! Every known musicians use Macs! They are designed for >> artists!” >> Really? Who decided that? Aaaaaaahhhhh yeah I forgot, Apple is very >> good at advertisement... See that little illuminated apple at the back >> of every of their laptops? >> That sticks out well when Trent Reznor posts pictures of his studio, >> or when you see pictures of ?uestLove on stage... >> >> - “Linux and stuff... It's for free... It must sucks... I mean you >> need loads of research and money to create the software to play >> music...” >> Really? >> >> - “It's not stable enough...” >> Ok, I give you that... But we have come a long way... And I bet that a >> good Ubuntu setup without alpha or beta versions of any software would >> be stable... >> And obviously the user base on proprietary software is bigger, so more >> testers, more feedbacks... But hey, look at my laptop, pretty stable >> no? >> >> - “It's too complicated... with these command lines and all...” >> Hmmm yes and no there... Yes setting up a Linux machine with a low >> latency kernel is quite complicated... But remind me how much did you >> spent to setup your >> Mac? And yeah you are right, we used command lines in Linux... But YOU >> don't have to! When was the last time you saw a Linux machine? Ah >> yeah, when I >> show you my Mandrake machine 10 years ago... Well we came a long way >> since that time, you should check it again! I mean playing, recording >> and producing >> music on a computer IS a complicated business, whatever OS you use. >> >> - “And when it doesn't work, who do I ask?” >> Hmmmm, when Cubase doesn't work, what do you do? Oh yeah, you google >> your issue and you browse around forums to find a solutions... >> Actually when you have an issue with your mac in general, is it Apple >> or a dude on some forums who gives you the solution? >> >> So I thought a little bit more... In the world of artists (I thinking >> here especially about music, but it is probably right in other >> artistic domains), brands are created >> because artists use them, no? >> >> And SERIOUSLY, in the world of music, the Open Source world certainly >> have brilliant tools! And the Open Source certainly has to speak to a >> lot of artist if they >> knew about it? The sense of freedom, the sense of sharing? Isn't it >> what Bob Marley or Rage Against the Machine were singing about? >> >> Trent Reznor (yes, I am a big fan) has been releasing music under >> Creative Common licenses... He let the people decide how much they >> wanted to pay for >> some of his albums (remind you of something? Donations?). He let fans >> record all the concerts of his last tour, let them mix it, cut it, >> produce it, package it and >> sale it (check out ThisOneIsOnUs). He even provided the tracks of some >> songs for the fan to have fun and mix them differently... Surely a guy >> like that would >> understand the value of Free Software. And where there is one, there >> might be others... >> >> (Sorry for the long introduction but) What I am getting at is this: >> Should we make an appeal to artists to produce something using only >> Open Source software? >> What do you guys think? Isn't it the best time to promulgate such a >> message, with the social media and all? And if yes, what would be the >> best way? >> >> Or am I completely wrong? And there is something in the big picture I >> didn't see? > > >

10 years, 3 months

[ANN] KMidimon 0.7.4 released

by Pedro Lopez-Cabanillas

KMidimon is a MIDI monitor for Linux using ALSA sequencer and KDE4 user interface. Changes in 0.7.4 * requires Drumstick >= 0.5 * load and play OVE files (Overture), contributed by Rui Fan * option to request real-time priority on MIDI input thread * option to (not) resize columns while recording * better reporting of file loading errors * revised universal sysex messages translation Copyright (C) 2005-2010, Pedro Lopez-Cabanillas License: GPL v2 More info http://kmidimon.sourceforge.net Sources http://sourceforge.net/projects/kmidimon/files/ Regards, Pedro

11 years, 2 months

[alsa] pci device ordering

by Tim Blechmann

hi all, (posted the same message on the alsa-user list, but without reply, now trying here) i have a machine with two pci devices of the same type. how can i ensure persistent device indices? the wiki [1] mentions a way for a way using vid/pid, but for pci devices it suggests to write a udev rule. [2] has an example, but it only describes how to set up the device names in /dev/snd. but how do i bind a specific device to an alsa device index (hw:X)? thanks, tim [1] http://alsa.opensrc.org/MultipleCards#How_to_choose_a_particular_order_for_… [2] http://alsa.opensrc.org/Udev

12 years, 2 months

linuxsampler on 64 bit Ubuntu

by Robin Paulson

i recently built a 64 bit Ubuntu studio machine, and am looking for 64 bit packages - the Linux sampler home page only has 32 bit though. does anyone know where i might find a package, compiled either for Ubuntu or Debian? cheers -- robin http://bumblepuppy.org/blog/?p=237 - government bill to remove basic human rights in NZ

12 years, 6 months

Re: [LAU] Simple, easy multithreaded circular buffer library for Linux?

by Kjetil S. Matheussen

Olivier Guilyardi: > > Ken Restivo wrote: >> It has been over 7 years since I last messed around with writing Pthreads applications. >> >> I recall it as a painful, ugly, brain-numbing task. I located an exercise I did back then to address the consumer/producer problem in Pthreads, and just the sight of it is giving me a headache. >> >> I'm being lazy, so instead of researching everything that's out there, I'll ask here: can anyone recommend a relatively simple and painless abstraction library (GPL or LGPL of course) that will give me functions to create a thread in which I can stuff things into a ring buffer, and another thread in which I can pull stuff out of it? >> >> By the way, I know that JACK has a very nice event buffer which is insanely easy to use (and I have), and makes multithreading almost transparent, but this isn't a JACK app. > > I don't know of any abstraction library, but creating/terminating a normal > thread with pthread is really an easy task IMO. It's about 10 lines in C. > > For inter-thread communication there's Portaudio's ring buffer: > http://portaudio.com/trac/browser/portaudio/trunk/src/common/pa_ringbuffer.h > > It can easily be used out of Portaudio (I'm currently doing that), and it > features memory barriers [1] which AFAIK Jack's ringbuffer doesn't. > > One problem with everything Portaudio is this heavy naming scheme. For a simpler > API, you might like my little wrapper: > http://jackbeat.samalyse.org/browser/jackbeat/trunk/src/core/ringbuffer.h > Nice. It's probably quicker to copy the jack_ringbuffer.c file out of jack though. > Portaudio actually also offers a callback mechanism (with hidden thread > creation), so if you're coding an non-JACK audio app, you might want to check it > out. > > For thread synchronization, semaphores (man semaphore.h) are really easy to use. > However, if you need a lock-free equivalent (for realtime, ...) phtread mutex > and especially pthread_mutex_trylock are your friends. > Those friends can be really cranky sometimes though. By using atomic operations instead, it's possible to avoid a lot of headache by not having to synchronize at all. Performance might be better too. Midishare has lockfree atomic functions for lifo and fifi queues: http://midishare.cvs.sourceforge.net/viewvc/midishare/midishare/src/common/…

12 years, 8 months

pulseaudio in realtime mode

by Emanuel Rumpf

I can't start pulseaudio in realtime mode: I: module-jack-sink.c: JACK buffer size changed. I: module-jack-sink.c: JACK thread starting up. I: core-util.c: Successfully enabled SCHED_RR scheduling for thread, with priority 9. I: core-util.c: Successfully enabled SCHED_RR scheduling for thread, with priority 13. W: module-jack-sink.c: JACK error >Cannot use real-time scheduling (RR/67)(1: Operation not permited)< W: module-jack-sink.c: JACK error >JackClient::AcquireSelfRealTime error< But /etc/secuity/limits.conf @audio - rtprio 99 @audio - nice -20 @audio - memlock 6000000 @pulse-rt - rtprio 99 @pulse-rt - nice -20 @pulse-rt - memlock 6000000 groups user user dialout cdrom audio plugdev lpadmin pulse admin sambashare pulse-rt -- E.R.

12 years, 9 months

Some heavy stuff and some weird stuff made with linux

by Arve Barsnes

Probably not the greatest display of what you can do with a linux box this, but we just released two albums and an ep yesterday. The albums are grindcore of the short variety (both albums are 19 songs in just above 2 minutes), but the ep (The Piece.....) is a simple acoustic song in 5/4 with some weird stuff on top. Even managed to use zita-at1 in there. It'll only take you 7 minutes to listen to all the three releases, so take a listen to the band that only exists because we thought it was funny that noone had ever used this word in a bandname before ;p http://constipation.bandcamp.com Regards, Arve

12 years, 10 months

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Linux-audio-user September 2011