Linux-audio-dev

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3 participants
7520 discussions

by Joan Quintana

> I'm not too sure what I'd call it. Thiago Teixeira called it ttymidi: > http://www.varal.org/ttymidi/ > Should do exactly what your looking for I think. Just run his program, and any USB/Serial > device > can send data to ALSA MIDI. :-) > Cheers, -Harry > PS: Might be nice to send the author a "thanks" if you like it Thanks for make me remember ttymidi. I tried it and is perfect for the purpose to connect arduino to fluidsynth. Returning to the problem..., I imagine something like plugging arduino and appearing automatically in aconnect. Maybe the solution is to hack the FTDI driver. FTDI is the chipset that converts serial to USB, and needs an FTDI driver to create a virtual COM port: /dev/ttyUSB0. The solution could be hacking the FTDI driver with the ALSA libraries driver and making it an ALSA sequencer port. Joan Q

15 years, 1 month

Native LV2 port of mdaEPiano VSTi

by Ricardo Wurmus

Hi, I'd like to announce that my LV2 port of the famous mda e-piano plug-in is ready for download! [1] When I was checking out the mda-lv2 ports, I noticed that the instruments were not actually playable. I could not get them to work in either lv2_jack_host or in Ardour2 or Ardour3. So , here is the first and only (to my knowledge) native LV2 port of the mda e-piano. There is no GUI yet, but once I figured out how to add a GUI I'll be adding one. I'd be very happy to receive comments and suggestions on the code. My next target will be the mdaPiano plug-in---I might actually start soon when the GUI stuff causes me too much of a headache... Best, Rekado _____ [1] http://github.com/rekado/lv2-mdaEPiano

15 years, 1 month

Port Argotlunar VST to LV2!

by Louigi Verona

Hey guys! Will anyone be interested in porting this GPLed VST to LV2? http://argotlunar.info/ Louigi Verona.

15 years, 1 month

interesting security update to bristol just came out

by Niels Mayer

I noticed that bristol-0.40.7-7 updated due to the following security update. What got me curious is what kind of security issue could running bristol possibly pose?? -- none on it's own, but another rogue package could exploit this issue ... https://bugzilla.redhat.com/show_bug.cgi?id=638376 ................. Raphael Geissert conducted a review of various packages in Debian and found that bristol contained a script that could be abused by an attacker to execute arbitrary code [1]. The vulnerability is due to an insecure change to LD_LIBRARY_PATH, and environment variable used by ld.so(8) to look for libraries in directories other than the standard paths. When there is an empty item in the colon-separated list of directories in LD_LIBRARY_PATH, ld.so(8) treats it as a '.' (current working directory). If the given script is executed from a directory where a local attacker could write files, there is a chance for exploitation. In Fedora, /usr/bin/startBristol re-sets LD_LIBRARY_PATH insecurely: declare -x LD_LIBRARY_PATH=/usr/lib:/usr/local/lib:${LD_LIBRARY_PATH}:${BRISTOL}/lib A solution is to patch the script to test if $LD_LIBRARY_PATH is set first before attempting to modify it: if [ -z ${LD_LIBRARY_PATH} ]; then export LD_LIBRARY_PATH=/usr/lib/foo else export LD_LIBRARY_PATH=/usr/lib/foo:${LD_LIBRARY_PATH} fi This issue has been assigned the name CVE-2010-3351. [1] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=598285 ........................... Niels http://nielsmayer.com

15 years, 1 month

Re: [LAD] [LAA] [ANN] gjacktransport 0.5.0

by Niels Mayer

On Fri, Nov 12, 2010 at 9:50 AM, Robin Gareus <robin(a)gareus.org> wrote: > http://gjacktransport.sourceforge.net/ is a tool that provides graphical > control over JACK-transport [1]. IAt some point, either from installing version 0.4 or 0.5, whenever I browsed a directory out of the web browser, such as the "show in folder" option for downloaded files, gjacktransport would get invoked instead. I finally figured out what happened. Somehow, the following setting got "installed" along with gjacktransport: KDE's System Settings -> File Manager -> gjacktransport Whereas it should have been set to "dolphin" . Investigating further, I noticed that gjacktransport got added as a viewer for file type "inode/directory" which seems to be a bug. I'm not sure why adding it as a MIME type would also select it as the default directory viewer in KDE, but that's what I've been seeing. But perhaps my system has been cobbled on too much as it is a hybrid of KDE and Gnome. In either case, I finally figured out the issue, and fixed it for myself. Just thought I'd share in case others had the same problem, and hopefully, if this is a bug in gjacktransport, that'll get fixed as well. Thanks, Niels http://nielsmayer.com

15 years, 1 month

Re: [LAD] FOSS Ethernet Soundcard - IETF Ethernet AVB

by errordeveloper＠gmail.com

Hi everybody, Fallowing up the long discussion i'm trying to sort of give the information you all seem to be missing. there was a meantion of this, but not too many of you have paid any attention: here you can find an article about the current status of the protocol mess: http://prosoundnewseurope.com/pdf/PSNLive/PSNLive_2009.pdf (page 28) obviously eas50 is good to go, but Ethernet AVB is right thing really. the only thing that it's still work in progress, but many of the proprietary vendors, which already have their own networking solution (like Harman with HiQ-net, the one i can name of top of my head) are involved in AVB stadard deveelopment. The idea of AVB is to bypass the IP layer, which is right thing really. you don't need to assign IPs to your audio nodes, really! in avb you'd just have to select channels that nodes whant to listen to. there is a fair bit of documentation on the ietf.org AVB group's page. but XMOS is looking to be the best point of refference: http://www.xmos.com/news/15-jun-2009/xmos-simplifies-ethernet-avb-implement… is think we should forget everything else and crack on with the XS1 AVB implementation! their XS1 chips seem to be really great, their are basically every innovative and open-source minded. the official toolchain is LLVM-GCC based. you can use C, C++ or their own XC. XC is basically C with some stuff omited (like goto and floats) and XMOS IO stuff added, don't just say WTF, look at it first! you should also watch the videos here: http://www.xmoslinkers.org/conference-online-wf especialy the two about the "XMOS Architecture" and the AVB presentation. some dev-kits are quite expencive, but that's due to low-volume really ;) there is alos a nice USB Audio kit! plus there is alittle board that is cheap and has two RJ45's on it already :) I'm myself studying the XC book at the moment. And geting familiar with the tool set :)~~ looks very exciting, cause these are the invovative chips! ok, may be an FPU is really missing on XCore, but how many DSPs have it anyway? well quite a few, but there was no FPU on dsps for ages! :)) also XC or C/C++ are so much more obvious then the bloody "menthal american military engeneers non-sense" called HDL-whatever! Cheers Everyone, Hope you will appreciate my excitment :)~ (l0l) -- ilya .d

15 years, 1 month

Musescore "music trainer"?

by Camilo Polymeris

Hello all, I was a Smartmusic (http://www.smartmusic.com) user until that program stopped working with wine. For those of you who don't know it, it is a program that basically downloads finale files (score + accompaniment) from a centralized server for musical instrument practice. When you play along it uses either MIDI input or a microphone to rate your perfomance (which notes you played in tune, and so on). As far as I know, there is no native Linux or open source alternative. My questions are: Do you think it would be hard to code a plugin for musescore (http://www.musescore.org) to do the same pitch detection and comparison with the score? Or maybe would it be better to fork the code and make a stand-alone app, keeping it as compatible as posible? Any experience with pitch to midi? aubio (http://www.aubio.org) could be an option, but I haven't tried it. I think the music repository part could be addressed later... I don't have much time right now, but I'd like to ponder the posibility of working on it in the future. Maybe start experimenting in the meanwhile. Just an idea, Greetigs, Camilo

15 years, 1 month

Re: [LAD] panning thoughts

by Martin Leese

Eric Kampman <erickampman(a)me.com> wrote: > Hello, > > I'm writing a synth module on top of jack and I'm starting to contemplate > stereo. > > I looked up "pan law" and ... This reference: M.A. Gerzon, "Panpot Laws for Multispeaker Stereo", Preprint 3309 of the 92nd Audio Engineering Society Convention, Vienna (March 1992) looks at panning laws and psychoacoustics. The paper is concerned mostly with 3- and 4-speaker frontal stage stereo, but 2-speaker stereo is analysed as an introduction. Regards, Martin -- Martin J Leese E-mail: martin.leese stanfordalumni.org Web: http://members.tripod.com/martin_leese/

15 years, 1 month

Re: [LAD] What do you do for a living?

by Ralf Mardorf

-------- Forwarded Message -------- From: Ralf Mardorf To: Kris Calabio Subject: Re: [LAD] What do you do for a living? Date: Thu, 11 Nov 2010 16:23:46 +0100 On Wed, 2010-11-10 at 15:06 -0800, Kris Calabio wrote: > Hmm, lot's of anti Google sentiment here? I'm afraid that I was sort > of in the afterglow of positive testimonials when I wrote that > original email. What exactly does Google do that is unethical? Sure, > they're a huge corporation (bureucracy blah blah), but they are > companies that are a lot worse. > > It's great (and refreshing) to hear that a lot of us do what we do in > spite of money. community > capitalism > > Yeah, I'd like to > > work for Google, but who doesn't right? :) > > Not me... > > Gordon MM0YEQ > > > > > They cooperated with China, than there are trackers such as Google Analytics and read Fon's first reply. Off cause there are also some good sides of Google. - Ralf

15 years, 1 month

Re: [LAD] What do you do for a living?

by Kris Calabio

They're a corporation. Of course they're meant to make money. I know that already. Be more polite, please. ;) I'm afraid you're drew the wrong implication about myself from that statement, but perhaps I should have been more clear. I meant that Google likes to see open source in a resume. If they see that you developed for open source projects and talk about it in an interview (if you get one), they will be more likely to hire you. The Google representativs at the panel emphasized this point many times. I hope you understand where I was coming from now. Best, Kris --- On Wed, 10/11/10, fons(a)kokkinizita.net <fons(a)kokkinizita.net> wrote: From: fons(a)kokkinizita.net <fons(a)kokkinizita.net> Subject: Re: [LAD] What do you do for a living? To: "Kris C" <cpczk(a)yahoo.com> Cc: "Linux Audio Developers Mailing List" <linux-audio-dev(a)lists.linuxaudio.org> Date: Wednesday, 10 November, 2010, 2:44 PM On Tue, Nov 09, 2010 at 07:17:24PM -0800, Kris C wrote: > Google just loooooves open source and those involved. Quite naive. Google doesn't want to share its profits with Microsoft, that's all. For the the rest, it's and advertising machine meant to make money. The rest is just an means to this end. Wake up to reality, please. Ciao, -- FA There are three of them, and Alleline.

15 years, 1 month

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Linux-audio-dev