Linux-audio-user April 2011

linux-audio-user@lists.linuxaudio.org

102 participants
86 discussions

by Ivan K

I recently downloaded snd-12.0.tar.gz from sourceforge and ./configure and "make install" completed without incident. However, whenever I execute snd, I don't get the GUI but rather, a command-line prompt "snd>". According to the README with the source, the default is for ./configure to create a makefile that uses Motif for the GUI, but even when I execute "./configure --with-motif" and then make, Snd does not pop up a GUI, all I get is the command-line prompt. The end of the "./configure --with-motif" process reads: Options selected ------------------------- Snd version ...........: 12.0 CFLAGS ................: -O2 -I. -g -O2 LDFLAGS ...............: -ldl -Wl,-export-dynamic prefix.................: /usr/local extension language.....: s7 audio system...........: ALSA graphics toolkit.......: None optional libraries.....: random features........: environs...............: x86_64-unknown-linux-gnu gcc Is the line "graphics toolkit.......: None" why I am not getting the GUI versions of Snd? Is there something I am not understanding? Thanks;

13 years, 7 months

RME HDSP: X11-less mixer state restoring

by Andrew Gaydenko

How to?

13 years, 7 months

ANN: upcoming L2Ork performances and a new pd-l2ork software release

by Ivica Ico Bukvic

Dear Friends and fellow L2Ork and Pd enthusiasts, I would greatly appreciate it if you would please distribute the following announcement. The spring is in the air, which means it is time for the spring DISIS (http://disis.music.vt.edu) and L2Ork (http://l2ork.music.vt.edu) events. To start the season right, this past Friday L2Ork had a sneak preview performance at Roanoke College. More so, this coming weekend we are having a truly special series of events with the return of the Boys & Girls Club laptop orchestra whom we've been working with this semester. In addition, the spring DISIS event will also include guest artists and scholars Ron Coulter, Brad Garton, Peter Kirn, and Dave Phillips. The upcoming events include: Thursday April 7 @ 3:30-4:45pm in DISIS presentation by Brad Garton Friday 10am-1pm lectures in the Arts Armory by Brad Garton, Peter Kirn, and Dave Phillips (free admission) Friday April 8 @ 7pm in Dumas Center (Roanoke, VA) children's concert featuring Boys & Girls Club laptop orchestra and L2Ork Saturday April 9 @ 7pm in Squires Recital Salon children's benefit concert (an Arts Fusion event) featuring Boys & Girls Club laptop orchestra and L2Ork followed by a hands-on laptop orchestra demo session for kids and families ($5 general, $3 children/students/seniors, with all proceeds benefiting Boys & Girls Club) Saturday April 9 @ 8pm in Squires Recital Salon benefit concert (an Arts Fusion event) featuring Ron Coulter, Brad Garton, Peter Kirn, Dave Phillips, and L2Ork ($5 general, $3 children/students/seniors, with all proceeds benefiting Boys & Girls Club) This year we've also partnered up with the Virginia Tech Kids' Tech University program to expand our outreach to young audiences. For additional info on the upcoming events, please visit our Events page or our Facebook Event page (http://www.facebook.com/event.php?eid=136468179758733). To keep up with the latest updates, join us on Facebook (http://www.facebook.com/group.php?gid=117918141555131). As if that weren't exciting enough, earlier this weekend we've made yet another public release of pd-l2ork (http://l2ork.music.vt.edu/main/?page_id=56) with even more cool features and fixes (changelog: http://l2ork.music.vt.edu/data/pd/Changelog). Our site has been also updated with the new promotional materials and photos. Yet, in the spirit of Steve Jobs' keynote speeches we've left the best for last. Stay tuned for more exciting updates soon ;-) For additional info on L2Ork, visit http://l2ork.music.vt.edu. Best wishes, Ivica Ico Bukvic, D.M.A. Composition, Music Technology Director, DISIS Interactive Sound & Intermedia Studio Director, L2Ork Linux Laptop Orchestra Assistant Co-Director, CCTAD CHCI, CS, and Art (by courtesy) Virginia Tech Dept. of Music - 0240 Blacksburg, VA 24061 (540) 231-6139 (540) 231-5034 (fax) ico(a)vt.edu http://www.music.vt.edu/faculty/bukvic/

13 years, 7 months

Re: [LAU] xrun problems. (Was Re: Introduction to Ardour 3.0 MIDI)

by Dan Capp

Hi Peder. Thanks for your assistance. Info below: >What CPU do you have (grep "model name" /proc/cpuinfo)? AMD Phenom(tm) 9750 Quad-Core Processor >Have you made the limits.conf hack to enable realtime and are you I'm afraid I have no idea. I have a real-time kernel and I have it set to on when I use firewire, but off when I use alsa. All music production (when I get the one-off xruns) happens only when using firewire, and thus with realtime on. >running jack in realtime (with say -P70)? Yes I have jack in realtime, on exactly P70, but ONLY in firewire mode. Alsa mode is set to default priority and non-realtime. I have QjackCtl setup so that it launches and starts in Alsa-mode when I boot my computer. When I do music stuff and turn my firewire device on I switch to the "firewire" preset which is realtime P70. >Are you running jack with ?ber-low latency; what's the frames/period setting? In firewire mode I have frames/period setting of 256 with buffer on 3 = a latency of 17.4 msec. Alsa mode is much higher on 1024 and around 70 msec (but I believe that should be irrelevant as I don't do any audio/midi jack connection stuff in Alsa mode. -Dan

13 years, 7 months

Need to create delay or artificial latency

by Daniel Bair

I have two different sized delays that I need to create. 1.) I need a audio delay of no more than 4 seconds. All of the delay plugins for Jack-Rack create echo. I just need a pure delay or artificial latency inserted into the jack audio stream (the output needs to be delayed 4 seconds from the input without mixing back the input). 2.) I need a timezone delay of no more than 4 hours. (there are no plugins for Jack-Rack that do this and my attempt to create one with csladspa doesn't work... I have plenty of hd space for looped storage.) Any help would be appreciated. Any code (C++, etc.) that would help me get this going would also be appreciated. Thank you, Daniel Bair

13 years, 7 months

Re: [LAU] OT: metal, money, changes, bleg

by Ken Restivo

On Fri, Apr 01, 2011 at 12:13:24PM +0200, Jostein Chr. Andersen wrote: > On Friday 01 April 2011 11.44.57 Ken Restivo wrote: > ... > > Also, after about 4 years of trying to make it in music and failing, I've > > left the band, put my own music aside, and officially given up. Sorry, > > I've reached the end of my poverty rope. If I post any more music, it'll > > be whatever I can knock out in an hour so of break time. > ... > > I like projects and contract work, not really looking for any kind of > > 9-to-5 committment-- I still think like a musician and work best on my own > > in the middle of the night--, so if anyone knows of random contract work, > > let me know off-list. If it pays (within reason), then I'll do it. > > > > Thanks all for everything, and I expect you may find me contributing more > > code than music as the years roll on. > > I'm not sure if this is sad or good news. It is sad news from a musical point > of vue, that's for sure. The hard truth is that the world do have a lot of > great musicians and composers and a lot of them are starving - and jazz > players do not have the biggest audience in the world. > > But you have a way to play, sound and improvise that makes you stand out. Only > a very skilled musician are capable to do the stuff you do, my heart bleeds > when I see all this moves over to /dev/null. I understand that you have to > make a living, but please, hold the door a little open officially and make > some space for the possibilities. The possibilities are allways there for > every person, but one must be ready to join them when they shows up. You have > been involved with gigs and recordings, I think that you are nearer the > possibilities than many other people. > > _Thank_you_ for everything, and.. ..I hope we will find you contributing more > music than code as the years roll on - and that you can make a decent living > of it. > > But anyway: -I wish you good luck with your future and hopes that you will > have a wonderful time whatever you do. > Thanks! I appreciate the outpouring of support and good wishes. The list here has made possible a lot of the music I've done, ao I should be thanking you, actually, and of course the developers of all this great free software. However, I wasn't posting this looking for sympathy as much as looking for pointers towards paying work :-) There are quite a few professional Linux-oriented engineers and sysadmins here, at least a few of whom work in the open source world, who have seen some of my code and hacking approach. I was hoping someone would point me towards where there might be contract work for software development, sysadmin stuff, embedded development (I'm good with Atmel), etc. Anything, really, if it pays. If it has to do with Linux, there's a high likelihood that I've already done it before and know how to. As for "Moment with Monosynth", that's a great example of the kind of music I will continue to post as time permits. Very simple, no band required, no real production necessary, just solo keyboards, took me like an hour to record and post, a couple chords and some noodling. I do indeed hope to continue on in that direction as I get spare time, and might even post more often than I have over the last few years that I've been busy with the band, if I end up with enough income and free time from other paying work. Thanks again. I'm not going away, really, just changing focus towards stuff that pays. -ken

13 years, 7 months

New Music Controllers Workshop at CCRMA July 11-15

by Ed Joseph Berdahl

Dear all, I would like to invite you to join us this summer while we further explore linux audio applications on a compact, embedded platform incorporating the Beagle Board! See you there, Edgar Berdahl New Music Controllers CCRMA Workshop at Stanford University Instructors: Edgar Berdahl and Chris Carlson July 11-July 15, 2011 9AM-noon, 1PM-5PM To sign up, visit http://ccrma.stanford.edu/workshops/new-music-controllers-nmc-0 Description: In this workshop, you will learn how to construct novel musical instruments and sound art objects using an open-source open-hardware platform, which leverages the power offered by Arduino (http://arduino.cc/en/Main/ArduinoBoardNano) and open-source software. By the end of the week, you will make an autonomous project that runs independently of the Internet and other computers, meaning that it will stand the test of time. This workshop goes the extra mile by mentoring participants in evaluating and further developing their own ideas with the help of the Verplank physical interaction design (PID) framework. Participants learn the philosophy and utility underlying the eight interrelated PID perspectives: idea, metaphor, model, display, error, scenario, task, and control. Alongside physical interaction design, the workshop integrates programming, electronics, robotics, audio, and interactive music. Hands-on applications using sensors and microprocessors in conjunction with real-time DSP will be explored for making music. Specific technologies will include Arduino platform, processing, Firmata, Pd (http://puredata.info), and the Beagle Board (http://beagleboard.org) for music synthesis. Participants will learn how to use resistive, force-sensitive, capacitative, optical, ultrasound, magnetic, optical, and acceleration sensors. We will also teach students how to make their own sensors with custom geometries constructed out of materials such as conductive fabric, piezoresistive fabric, copper tape, and piezoelectric PVDF. We will discuss popular controller components such as (multi-)touch screens, TacTex pads, Nintendo Wii, Novint Falcon, and many more. Participants will design and build working prototypes using a kit* that can be taken home at the end of the workshop. Many prototypes will be applicable for performance and exhibits. Further issues to be explored will include modes and mappings in computer music, exercises in invention, and applications of sensors and electronics to real-time music. The course will be augmented by a survey of existing controllers and pieces of interactive music. This workshop is intended for: Musicians or composers interested in exploring new possibilities in interactive music in a hands on and technical way; Anyone looking to gain valuable skills in basic analog and digital electronics, with a focus on invention; OR Makers, engineers, computer scientists, or product designers interested in exploring artistic outlets for their talents and collaborating with performers and composers. Workshop structure: The workshop is an accelerated variant of the Music 250A course (http://ccrma.stanford.edu/courses/250a). The workshop will consist of half-day supervised lab sessions, and half-day lectures, classroom exercises and discussions. Classroom sessions will feature live demos and/or concerts of interactive music and instruments. Participants are encouraged (but by no means required) to bring their own laptop computers for creating their projects. NOTE: There is a $20 lab fee included in the cost of this workshop. Participants have the option of purchasing a $200 lab kit at the end of the workshop. The kit contains a Beagle Board, an Arduino, a prototyping board, power supply, ethernet cable, and a variety of sensors. The Beagle Board runs our own special distribution of embedded linux called Satellite CCRMA (http://ccrma.stanford.edu/~eberdahl/Satellite). To sign up, visit http://ccrma.stanford.edu/workshops/new-music-controllers-nmc-0

13 years, 7 months

Re: [LAU] OT: metal, money, changes, bleg

by jwm.art.net＠gmail.com

"A far better use of my time and much more appealing to me from a end user perspective would be to create enough energy to enable teleportation to be possible." As far as I can tell from the (UK) TV adverts the new Samsung mobile phone does have teleportation capability. Sent using BlackBerry® from Orange

13 years, 7 months

Fwd: Stompbox Design Summer Workshop at Stanford July 18-22

by Ed Joseph Berdahl

Dear all, Also we are teaching a related workshop in designing effects pedals with an Ubuntu-based open-source software and hardware platform. Thanks! -Edgar Berdahl ----- Forwarded Message ----- Stompbox Design CCRMA Workshop at Stanford University Instructors: Edgar Berdahl and Esteban Maestre Guest Lecturer: Jonathan Abel July 18-July 22, 2011 9AM-noon, 1PM-5PM Further information and sign up at http://ccrma.stanford.edu/workshops/stompbox-design Description: Come design your own flavor of stompbox at Stanford Universityʼs Stompbox Design workshop. We will teach you a brand new platform for implementing stompboxes that not only enables you to create any sound effects from the past but also promotes the creation of new sound effects. Our resources for new media design are also at your fingertips if you would like to re-design the concept of a guitar stompbox: for example, put a Wiimote on your guitar and use it to change the sound of the effect, or use some LEDs to simulate the glow of vacuum tubes or fire, or even incorporate a micro-sized Pico projector into your stompbox! The expanded world of digital audio effects is at your fingertips because the workshop incorporates: • Most basic theory of signal processing • Description of operation of prior stompboxes and digital audio effects • Laboratory exercise teaching you how to program our own open-source software and hardware platform involving: • connecting to your stompbox over an Ethernet connection from your laptop • creating new digital audio effects by connecting together basic building blocks in the graphical • programming language Pure Data • building simple button and knob interfaces to Pure Data (http://puredata.info) • Laboratory exercise teaching you how to program digital audio effects in C++ and/or Faust (http://faust.grame.fr) • Introduction to human-computer interface devices for projects • Further discussion of open-source hardware and software platforms including the Beagle Board (http://beagleboard.org) Finally, we will round out the workshop with a roundtable presentation of the stompboxes you create followed by an optional evening jam session for fun. This workshop is intended for: Musicians interested in exploring new possibilities in digital audio effects in a hands-on and technical way; Makers, engineers, computer scientists, or product designers interested in exploring artistic outlets for their talents and collaborating with musicians; and/or anyone looking to gain valuable skills in basic audio signal processing and human-computer interfaces, with a focus on invention. NOTE: There is a $20 lab fee included in the cost of this workshop. Participants have the option of purchasing a $200 lab kit at the end of the workshop. The kit contains a Beagle Board, an Arduino, a prototyping board, power supply, audio connectors, enclosure, ethernet cable, and a variety of sensors including potentiometers. The Beagle Board runs our own special distribution of embedded linux called Satellite CCRMA (http://ccrma.stanford.edu/~eberdahl/Satellite). Participants are encouraged (but by no means required) to bring their own laptop computers and/or musical instruments.

13 years, 7 months

Re: [LAU] OT: metal, money, changes, bleg

by Q

Fons Adriaensen wrote: > On Sun, Apr 03, 2011 at 10:22:16PM +0100, Q wrote: >> Fons Adriaensen wrote: >>> On Sun, Apr 03, 2011 at 09:55:51PM +0200, Robin Gareus wrote: >>> >>>> many better suited fori (forums) >>> 'fora' is the latin plural. >>> >>> Ciao, >>> >> But, in English, I believe is only considered correct when dealing with >> physical spaces in a Roman/Latin context and is usually considered >> pretentious when dealing with virtual, online places. (Generally in >> English, it seems that the plural of Latin nouns of this form is now >> considered to take the English form -- -ums rather than -a, vis >> stadiums, forums, referendums etc, sad as that may be.) > > Yes, the English plural is 'forums'. But the Latin one, pretentious > or not, is 'fora' and not 'fori'. > > Ciao, > But so what, or did I miss a memo saying that the list is moving over to Latin? Q

13 years, 7 months

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Linux-audio-user April 2011