Linux-audio-user January 2010

linux-audio-user@lists.linuxaudio.org

166 participants
153 discussions

by David Adler

On Wed, Jan 13, 2010 at 12:55 PM, Rob Wentz wrote: > Ok, just saying here.. It might be more helpful to post the contents or at > least more of a clue to what your .zynaddsubfxXML.cfg contains, instead > of how clueless you are about it's origin ... or how tasty miso soup is for > that matter.. capish? > yes, I could have attached it in the first place, done now. The issue came up before: http://linuxaudio.org/mailarchive/lau/2009/11/12/161948 I am still interested in where the file comes from, that's why I mentioned not having a clue. I could have written an explicit question as well. Usually I stay on topic, IMHO the little OT line, more meant to be ignored, is acceptable. all the best, d

16 years, 1 month

[LAU] Jack Transport improvement: user cases

by rosea grammostola

Hi, If you want to work on Linux the 'modular way', you need good Jack Transport, for syncing apps and looping. Currently there are some limitations, which you can find here: http://trac.jackaudio.org/wiki/TransportLimitations So looping is not really possible. Maybe you as an Linux Audio User can describe a concrete 'user case example'. Something you like to be able to do with some apps, but which is not possible at the moment. Think about syncing but also looping with Jack Transport. This will help us getting a clear picture about the state of Jack Transport and how it could/should be improved. Thanks in advance, \r

16 years, 1 month

[LAU] audio collage?

by Josh Lawrence

hi everybody! my friends and I have started a mix tape club. basically, we dump everything we are listening to on a CD and hand it out to all of our friends. I'm 4 days late on the december deadline, and need to get something in quick. I've got all my tracks, but I'd really like to do something...errm, strange with them. I read a post on reddit.com that feh can be used to create collages of images: http://www.reddit.com/r/linux/comments/akudo/feh_create_random_art_from_the… is there an audio application that can make audio collages from audio files? I understand that the end result would be somewhat strange, and you might only get 1 out of 10 results that would be considered listenable, but it might be fun to try anyway. any ideas? -- Josh Lawrence http://www.hardbop200.com

16 years, 1 month

[LAU] jack capable instrument tuners?

by Ben Tartsa

I know it's an old can of worms but... Anyone have a guitar tuner working with jack? From what I can tell: Lingot should be jack capable with the "next release". Anyone built this from cvs? Qjacktuner is broken (not compatible with modern qt versions?) Fmit is broken (not compatible with modern jack versions?) Ben

16 years, 1 month

[LAU] netjack and WiFi

by Michal Seta

Hi all, Happy new decade! Back on that WiFi jamming issue I wrote about a while ago. Thank you all for the various suggestions. I have spent most of my time trying to get somewhere with netjack as I found it the most promising, not only in terms of efficiency but also scripting and control. However, I have hit some brick walls which are certainly due to the nature of WiFi networks (packet collisions and such) which make my setup very unstable. First of all, in my setup, there will be one "server" computer collecting 5 signals from the 5 musicians and playing them for the audience. Moreover, the operator (or software) will send back 5 mono signals to performers (one signal per performer). The idea is that each performer hears only one instrument at a time. Currently the show stopper lies in alsa_in and alsa_out components. Whenever I run both on my netbook (Atom 1.6G with Atheros Communications Inc. AR5001 Wireless Network Adapter (802.11g)) they consume around 70-80%CPU and they peak at around 50% each whenever they choke on net over/underruns. They eventually segfault (and sometimes bring the jack server down with them. This particularly true whenever the WiFi signal signal strength is weak (around 50-60%). I was especially surprised at the high CPU consumption of those apps, as I figured that if all they do is schlep audio to and from the soundcard they would keep a low profile... My built-in audio interface is: lspci -s 00:1b.0 -vv 00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 02) Subsystem: Acer Incorporated [ALI] Device 019c Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Interrupt: pin A routed to IRQ 16 Region 0: Memory at 56340000 (64-bit, non-prefetchable) [size=16K] Capabilities: <access denied> Kernel driver in use: HDA Intel Kernel modules: snd-hda-intel It is an Acer Aspire One netbook. Running Karmic with jack compiled by hand, version 0.118.0 Any insight will be greatly appreciated. ./MiS

16 years, 1 month

[LAU] vinyl import to FLAC

by Martin Horn

Hi All, I want to rip a bunch of vinyls to FLAC. I first tried Audacity but when I change the interface to my Audio 4 DJ in preferences Audacity gets killed. Can anybody help or suggest another recording device? Also when recording with the built-in Sound Recorder (UbuntuStudio Karmic) and then trying to open (import) the files with Audacity just does nothing (although the Movie Player plays the files correctly. Thanks for any ideas! Martin

16 years, 1 month

Re: [LAU] [LAD] Is TerminatorX development stalled?

by gerald mwangi

Hi guys, I just wanted to give an update on the integration of librubberband into TerminatorX. To understand rubberband, i wrote a small console Jack app that can play wav files at diferent speeds, keeping pitch. It works well. The code is attached. I have a question to for the devs out there though: It seems to me that i have to run process() a few times with a fixed blocksize before, getRequiredSamples() returns something >0 in Realtime-mode. All other options are default options. Is this true? I need some help on this issue. thanx Gerald

16 years, 1 month

Re: [LAU] [LAD] Is TerminatorX development stalled?

by gerald mwangi

16 years, 1 month

[LAU] nted windows equivalent

by Rustom Mody

Hi folks I had my demo recently -- used nted with ubuntu karmic. [Had to upgrade from hardy to karmic for the demo because earlier X versions would not project -- but thats another story]. It was a huge success as far as I can see to the extent that other schedules were cancelled so that I could teach more singing to the group. So thanks to people on this list and of course to Joerg for nted. So now the question: Some of the folks there asked me: Did you write this software? I laughed: Use nted -- for that you need to use linux. Could I give a more helpful answer? Whats the nearest windows equivalent of nted? I told them the nearest I know is Cubase... Thanks Rustom

16 years, 1 month

[LAU] M-Audio FastTrack Pro in 24-bit 48Khz, anyone had any luck?

by Ken Restivo

OK well I just applied the patch I needed directly to the ALSA that was in the source tree, bumped my --append-to-version, and recompiled the whole kernel. Not too tedious on a 64-bit machine using -j2. Took slightly less time than compiling Ardour ;-) It is this patch that I am trying to get working: https://bugtrack.alsa-project.org/alsa-bug/view.php?id=3249 And the version that applied cleanly to my kernel version (2.6.26.8-rt12) was the one called "fasttrackpro.patch", which was apparently intended for 2.6.27. Good enough. 48Khz now works for playback and capture, yay. But not in 24-bit mode; only in 16bit mode. This is using 0x9 or 0xd as device_setup paramters; either way, I get only 48/16, not 48/24. I don't get the digital inputs even if I try, but that's OK, I don't need them anyway. Why am I even bothering to do any of this? Because Lahar is going into the studio. A friend will record our basic tracks using his ProTools setup (alas, Digidesign Firewire interfaces won't ever work with Linux, so we're stuck with ProTools on a Mac). He tracks at 48Khz, so I needed to bump my FastTrack up to 48Khz so that I can use Ardour to mix it. So far so good. Yes, this means a mixed-with-Linux CD is coming soon. Lack of 24-bit is neither tragic nor fatal-- it's all 32-bit floats inside JACK, and it'll get mastered either with JAMIN at 32 bits, or via a professional shop at 24 bits--, but it'd sure be nice to have those extra bits from the input of the FastTrack for recording overdubs if needed. -ken

16 years, 1 month

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Linux-audio-user January 2010