Linux-audio-user February 2011

linux-audio-user@lists.linuxaudio.org

157 participants
129 discussions

amazon reseller of floss audio software?

by michael noble

hi all, Phoronix pointed out that an Amazon seller called Butterfly Media was reselling some floss projects like scribus and inkscape. I just checked out their "product" on amazon and found this: http://www.amazon.co.uk/Butterfly-Media-Music-Editing-Tool-kit/dp/B0040BF44… >From the product description, it seem they are trying to sell mixxx. Then again, the screenshots clearly show Ardour, LMMS and mixxx. Whichever way, it seems some questionable business is going on. -michael

14 years, 10 months

Re: [LAU] Jack fallback to alsa when firefire device off?

by Mike Cookson

Thu, 17 Feb 2011 10:30:47 -0500 письмо от Paul Davis <paul(a)linuxaudiosystems.com>: > On Thu, Feb 17, 2011 at 10:23 AM, Dan Capp <reflectremain(a)gmail.com> > wrote: > > why install pulseaudio in the first place? I don't know to be honest. > I'm > > still getting to grips with how Linux audio works and what the various > > drivers and tools even do, let alone how they do it. So it's good to > hear > > someone with a different perspective on the usefulness of PulseAudio etc. > > The KXStudio website states the following: > > "users will be glad to know that Jack2 is present and that *all* > audio > > output is sent to it. This includes Pulse-Audio, which means that you > don't > > have to stop Jack if you need to, for example, open a Web Browser to > watch > > some tutorial videos." > > I've read lots of people agree that this is a great idea - I'm > still trying > > to fully understand why because it seems that I DO need to stop Jack, or > at > > least re-route it, if I want to open a web browser and watch some > tutorial > > videos. > > Personally, I would say that KXStudio has made a mistake here. There > is no reason to run PulseAudio for this purpose. Torben wrote a > libflashsupport-jack which routes Flash straight to JACK, and > http://jackaudio.org/faq describes ways to get a variety of other > desktop software to talk to JACK. I spend all day listening to > internet radio and my own music collection via Rhythmbox, browing the > catalog at emusic.com, watching Flash *and* working on Ardour ... all > via JACK and all without a large, complex layer like PulseAudio in the > middle. > > Some of these are not quite as robust as they should be but it would > be far better (I think) to focus resources on making them more robust > than introducing PulseAudio as a desktop<->JACK middle layer. > _______________________________________________ > Linux-audio-user mailing list > Linux-audio-user(a)lists.linuxaudio.org > http://lists.linuxaudio.org/listinfo/linux-audio-user There is not mistake. Each way has advantages and disadvantages. As for me - when i work with pro audio software, i don't like to lost jack-less applications, like web browser. For most software, which may, there are default settings to use jack - i.e., audacious, vlc, and kde sound system has jack backend at highest priority. As for switch between firewire / alsa - it could be done easily, as simple as lash_button (but checkbox and written with python... probably, even as some applet). Btw, latest version of jack2-simple-config in KXStudio has own configurator, which can change settings on the fly, but when i changed backend between dummy and alsa (firewire - did not use yet), changes take effect only when i stop and start jack later (oh, studio). Also it is nice, to have some effects host (ingen or some rack) for output. I.e., i have ladish project with jack-rack (with Plate Reverb Stero) and musescore, because freeverb, used in fluidsynth, as much as all other convolver-based reverbs, can't give good results for short reverbs (in JR i muted long reverb, that sounds like reall hall). Since freeverb has only one very long impulse, it just truncates it for short reverbs, producing awful result (more like resonance of huge metallic list, that reverb).

14 years, 10 months

Ardour + sidechaining (SC3) and qualityloss

by Gabbe Nord

Hey guys! Recently started some form of electroproject in ardour, and as always sidechaining is needed. Right now I'm routing everything that's to be sidechained (which is everything but the kick lol) into a 3-channel bus with a SC3 on connected to the kick. The sidechaining works, but i actually get a very noticable quality loss and thining of the stereoimage from using the SC3.. Is this something you know of, something that can be worked around? Also, are there other sidechain soloutions? I mean sidechaining like the SC3, a compressor controlled by for example the kicksignal. Regards!

14 years, 10 months

Re: [LAU] Jack fallback to alsa when firefire device off?

by Dan Capp

Thanks for sharing the link Robin. I'll give it a whirl - not necessarily to fix the firewire issue but just because it's always good to simplify things (by cutting out the (PulseAudio) middleman). - Dan

14 years, 10 months

Re: [LAU] [Rosegarden-user] Rosegarden Manual

by david

D. Michael McIntyre wrote: > On Sunday, February 13, 2011, Detlef Schütz wrote: > >> By the way: there seems to be an old manual written in 2005. Is this >> manual near enough to the actual program? > > It may still be useful if you can get it cheap, but it is out of date. I > wrote that just as Rosegarden 1.0 was coming out, and a great deal has changed > since then. > > Unfortunately, there is no easy way to put together a print version of our > current documentation. We have moved all of it to a wiki now, in order to > make it easier to maintain, and easier for people to help with writing > documentation, but this has made it more difficult to produce PDF files. If someone has a copy of Acrobat Professional (yah, sorry, junk $$$ Windows/Mac software!), it can be used to convert an entire website (such as a wiki) into a PDF. > The documentation is not in the best of shape either, I fear. I used to be > the documentation writer, and that was my only responsibility. Now I manage > the entire project, and do a lot of the development. Documentation has fallen > way down on my list of priorities, and I don't have much time to be involved > with keeping it up to date. We have help from several people who have taken > up some of my slack in this area, but the job is very large, and our > documentation is always the last thing to get done. I wish I had the time. Used to make a living as a tech writer that wrote user manuals ... -- David gnome(a)hawaii.rr.com authenticity, honesty, community

14 years, 10 months

Jack conking out, How to debug?

by S. Massy

Hello, all, So, thanks to the excellent advice received on this list, I recently purchased a Roland UA25EX and it works just great, and out of the box at that. Also thanks to this list, I now have my RT kernel sorted out, lean and mean as ever. All great! With my (crappy) internal sound interface, I used to be able to leave jack running for days at "-p128" without any problem, at least with my new kernel. With my new USB soundcard, however, jack works flawlessly for a few hours and then abruptly exits saying something to the effect that jack timed out and the watchdog is doing its painful duty. Here is my jack command-line: $ jackd -P61 -t100 -d alsa -d hw:2,0 -p128 -r 44100 I tried adding "-v" for good measure and redirecting to a file, here's what it looks like before the downfall: -Couple 100K of boredom- [...] load = 0.2478 max usecs: 4.000, spare = 1447.000 load = 0.2273 max usecs: 3.000, spare = 1448.000 load = 0.2859 max usecs: 5.000, spare = 1446.000 (and then tonnes of) **** alsa_pcm: xrun of at least 0.029 msecs **** alsa_pcm: xrun of at least 0.025 msecs **** alsa_pcm: xrun of at least 0.026 msecs **** alsa_pcm: xrun of at least 0.024 msecs ---and so forth until jackd gets killed. Does anyone know what the problem could be? Is something wrong with my jackd command-line? Is there anything further I can do to debug? Cheers, S.M. --

14 years, 10 months

Linux Laptops?

by Josh Lawrence

Hey all, After getting scorched by purchasing two laptops with almost zero Linux support (battery status? what battery?), I have decided to go looking for a laptop that is sold by a company that supports Linux. I'm looking for any pointers to companies that sell Laptops that run Linux here in the US. (I'm already familiar with System76.) Bonus points if you've done business with them and have praise or warnings to go along with the pointers. Feel free to shill for your own company if you want, just make sure if you recommend a laptop that Linux can read the damn battery status. :) Thanks, Josh -- Josh Lawrence www.hardbop200.com

14 years, 10 months

Petri-Foo Segfault

by Josh Lawrence

Hi, I'm experiencing a seqfault when running Petri-Foo: [~]$ petri-foo lash_open_socket: could not connect to host 'localhost', service '14541' lash_comm_connect_to_server: could not create server connection JACK error: This system has no accessible HPET device (Device or resource busy) Connected to JACK server with client name 'LASH_Server' Opened ALSA sequencer with client ID 130 Listening for connections Created project project-1 in directory /home/josh/audio-projects/project-1 Added client 87edbf96-21e0-4085-9c2b-3c512400aea6 of class petri-foo to project project-1 Client 87edbf96-21e0-4085-9c2b-3c512400aea6 set its name to 'petri-foo' Segmentation fault [~]$ Client petri-foo removed from project project-1 Project project-1 removed there are two things here that aren't clear to me: 1. I configured the software with --disable-lash, yet it's trying to start lash anyway... 2. members of the audio group have permissions to use (is that the right word?) the HPET timer, but it's saying it's busy, maybe because jack is already running? not sure if either of these two things matter, but there they are. running the latest version of av linux. please let me know if you need more information. thanks, Josh -- Josh Lawrence www.hardbop200.com

14 years, 10 months

Jack fallback to alsa when firefire device off?

by Mike Cookson

Is there such thing? It is not my question, it saw it on irc. And really could not find nothing.

14 years, 10 months

Re: [LAU] Jack fallback to alsa when firefire device off?

by Mike Cookson

> Hehe jack switch to Alsa .... Funny! Imho, not more, than switch to dummy :)

14 years, 10 months

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Linux-audio-user February 2011