Linux-audio-user January 2005

linux-audio-user@lists.linuxaudio.org

207 participants
246 discussions

[linux-audio-user] Re: FreeWheeling live looper prerelease

by JP Mercury

Here are replies for some of your questions about f'wheeling- ce wrote- > configure: error: VIDEO: You need libsdl-gfx1.2-dev installed > > but when I do > > epm -qa | grep sdl > > I get > > sdl-image-1.2.3 > libsdl-1.2.7-r2 > sdl-mixer-1.2.5-r1 > > An extra package libsdl-gfx is not in the Gentoo repository. > Is it an extra package that I should compile from the web, or > can I check is the needed headers are already on my system > somehow? > > Thanks & best regards > > ce Dear ce, Yes, you can get libsdl-gfx at: http://www.ferzkopp.net/~aschiffler/Software/SDL_gfx-2.0/ I'll modify the configure scripts to give the websites for all dependent packages. Thanks for your feedback. --- Wolfgang wrote- > "JP Mercury" <swirlee(a)stickist.com>: > > FreeWheeling is an audio tool for live looping. It provides a highly > > configurable, fluid user interface for instrumentalists to capture > > loops in real-time. Based on the JACK, ALSA, and SDL libraries, it > > integrates with FluidSynth, a software synthesizer. > > > > Think a bit of Ableton Live and a bit of Sooperlooper. > > I'm still sobbing tears of joy. > > How do you trim loops? How does cut mode work? > What does the number next to "poze" mean? Ehm, what does "poze" mean? > How do you pan triggers/loops? > You can't save it seems. Isn't that a tad overspiritual? > > Big thank you so far > Wolfgang You're diggin in, I can see. Your questions- Cut mode works by changing the behavior of 'trigger-loop'. Trigger-loop happens whenever you press a QWERTY key or a key on the lowest octave of a MIDI keyboard. If there's no loop at that position, trigger-loop records a new one. The next trigger-loop switches to play (or overdub). So trigger-loop normally toggles your loops on-off. When you toggle them on, they start again at the beginning. When you turn cut mode on, loops that are already playing can be cut in and out without restarting them-- it works like a DJ on the faders. Start some loops playing, enable cut mode and then hit the keys of your playing loops. I've only configured cutmode for MIDI keys, because it's expressiveness is in mapping of note velocity to loop levels. But you could reconfigure it to work with QWERTY keys too-- if you are willing to mess with the config file. In the config file you'll find:  <binding VAR_cutmode="1" midikey="*" notenum="VAR_noterange" keydown="1" event="set-trigger-volume" loopid="notenum+VAR_loopid_pianostart" vol="velocity/127"/> <binding VAR_cutmode="1" midikey="*" notenum="VAR_noterange" keydown="0" event="set-trigger-volume" loopid="notenum+VAR_loopid_pianostart" vol="127-velocity/127"/> These bindings modify the normal trigger-loop behavior for MIDI keys to instead do set-trigger-volume whenever cut mode is on. Right after these bindings you can add: <binding VAR_cutmode="1" key="*" keysym="VAR_pckeyrange" keydown="1" event="set-trigger-volume" loopid="keysym+VAR_loopid_pckeystart" vol="1.0"/> <binding VAR_cutmode="1" key="*" keysym="VAR_pckeyrange" keydown="0" event="set-trigger-volume" loopid="keysym+VAR_loopid_pckeystart" vol="0.0"/> This changes the behavior of pressing QWERTY keys when cut mode is on. Now, in cut mode, when you press a key, the trigger level is set to 100%. When you release the key, it's set to 0%. The loops have to be playing for these changes to work. -- Not sure what you mean by trim loops. Do you mean how to sync up many loops together? -- The number next to poze is the transpose for MIDI out and FluidSynth. This transposes all of your MIDI keys except those that are used to trigger loops. That screen display is defined in the configuration file: <display var="SYSTEM_midi_transpose" type="text" font="small" title="poze " pos="0.0,0.9"/> So it shows the value of SYSTEM_midi_transpose on screen. -- There is no way to pan loops right now. Freewheeling currently runs all loops mono. I recognize the limitation- it's a good idea for a future release. -- You can't save individual loops yet- maybe a bit overspiritual, but this feature is on the table. For now, you can stream out a master OGG of your work by pressing print screen. Here's the config:  <binding key="print screen" keydown="1" event="toggle-disk-output"/> -- I can see that better documentation would help. For now, I hope this helps. --- Spencer wrote- > I'm really excited about trying this out, but I'm having a > runtime error. It compiled fine, but when I try to run it, I get: > > FreeWheeling 0.5pre1 > Brought to you by a grant from Mother Earth. > > MEM: HiPri Thread 0 > fweelin: pthread_mutex_lock.c:78: __pthread_mutex_lock: Assertion > `mutex->__data.__owner == 0' failed. Aborted > > Any help would be appreciated. Looks like a great app! > > -spencer Never seen that before! I'll have a look at my init code to see if I can see what's up. Kind Regards, JP

19 years, 4 months

[linux-audio-user] qjackctl compilation broken

by Dubphil

Hey list, I wanted to compile the last ardour release 0.9-beta23 but it broke before the end (although the previous release was compiling fine !) nevertheless I decided to upgrade Jack to the latest cvs snapshot 0.99.44 and then I succeeded in compiling ardour after this jack update. then I decided to compile qjackctl again with the new jack libs but it doesn't work :-( here is the make output error : in src/qjackctlMainForm.ui.h:1087: error : `jack_reset_max_delayed_usecs` undeclared (first use this function) and I have the same error for all the jack_... functions. I tried to add -I/usr/lib/jack -I/usr/lib -L/usr/lib/jack -L/usr/lib in case of, but nothing work... When I used the jackd provided by the gentoo portage, qjackctl was compiling fine any one have met this kind of issue with qjackctl and the cvs snapshot of jack ? thanks Philippe

19 years, 4 months

[linux-audio-user] setting loop-points

by Atte André Jensen

Hi I need to edit looppoints and save the result to a file (to be read by csound). I looked at audacity and rezound, but can't figure out how to edit the loop-point. Also which format should I save in for the looppoints to be preserved? Maybe someone also has a nice link to some tech-info on sample formats? Thanks in advance... -- peace, love & harmony Atte http://www.atte.dk

19 years, 4 months

[linux-audio-user] tracktion

by Iván Almada

hi, ive used tracktion in the past, its a straightforward DAW that focused on having an uncluttered GUI some of the innovations that big sequencers like cubase are adopting now (for example enter midi notes from the arrangement screen)... its a bit tedious switching between screens (mixer, arrangement, softsynths) when you only have one monitor so tracktion has everything in one place... in addition it doesnt have a traditional mixer: "The design philosophy behind the interface is to make it as simple as possible avoiding clutter or waste, so having a mixer that duplicates functionality that's already available somewhere else on the screen doesn't fit very well with this"... the funny thing it is now distributed by a well known mixer company... ivan. _________________________________________________________ Do You Yahoo!? La mejor conexión a internet y 25MB extra a tu correo por $100 al mes. http://net.yahoo.com.mx

19 years, 4 months

Re: [linux-audio-user] XFS on FC2; experiences, pointers?

by Kjetil Svalastog Matheussen

Barton Bosch: >I'm going to be doing a fresh install of FC2 in the near future and >am considering using an XFS data partition for music and video files. > Why not FC3? >It seems that XFS isn't an install time option (according to Disk >Druid). How is an XFS partition added? At the fedora install cd boot-screen, write "linux xfs" instead of just pressing return. >Does anyone here have any >experiences or pointers to share WRT XFS or XFS and FC2? I just had a bad experience with FC3 nfs-exporting an XFS partition. Very unstable. However, it only happens when exporting the filesystem as nfs. I searched the web, and it seems like the bug is not in the xfs filesystem, but somewhere else in the 2.6 kernel triggered by the combination of xfs and nfs. (My "solution" to the problem was to use reiserfs) So please, don't be scared by my experience unless you are going to nfs-export the partition. It should be a safe and stable filesystem. --

19 years, 4 months

[linux-audio-user] Need some help figuring out how to make ardour master over jackd and a weird UI error/crash

by Ivica Ico Bukvic

Hi all, This probably may seem like a trivial thing but as of late I've been experiencing some difficulties with ardour + jack. Considering that I will be teaching it in the upcoming weeks in my Linux & Multimedia class, this may seem extra lame on my part :-) but nonetheless I am here to ask for some kind assistance in this matter... Here's the scoop on the issue: I start jackd and everything is happy. I start ardour and still everything is happy. I create a session add some tracks etc. and still everything is happy. Now, I try to press play in Ardour and nothing happens. I press play on the qjackctl and sure enough it plays. OK, so now I want to make Ardour master over Jackd, right? So, I go into "Options" and there I find that timing sync says "Master" suggesting "Ardour" is master. Below, two options are checked "Jack something (can't remember)" and "Jack transport sync" or something like it (currently away from my beloved Linux box). I try unchecking that as well as any other options and nothing. I simply cannot get Ardour to be master. In addition I tried recording something and as soon as I press record and play on an audio track I get: "CRITICAL: UI request POOL OUT OF MEMORY - RECOMPILE WITH LARGER SIZE!!!" And then... crash. I am using Mdk 10.0 (Thac's rpms) stuff (ardour-0.9cvs041014). I also tried 10.1 (ardour beta22) on a different 10.1 Mdk machine and I got the same errors... Any ideas? Any help on this issue would be highly appreciated! Best wishes, Ivica Ico Bukvic, composer & multimedia sculptor http://meowing.ccm.uc.edu/~ico/ -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.300 / Virus Database: 265.6.9 - Release Date: 1/6/2005

19 years, 4 months

[linux-audio-user] Noise reduction with FFT

by Spencer Russell

I've got this really noisy audio file I'm trying to clean up, and I was thinking, it would be really cool if I could run a clip of the file that was just the noise(it's a recording of a discussion for a TV broadcast, so when no one's talking, it should be silent) and have the program output an average frequency content, in some sort of format that another program could take it as input and create a filter that would filter out those frequencies. It seems like brutefir would be able to do the latter part, but is there a way to automatically generate the filter definition from the frequency content of a file? Is this a feasable method of noise reduction? If it seems like it could work, but there isn't a program to do it, I would be interested in writing it, if anyone has any input. Thanks! -spencer

19 years, 4 months

Re: [linux-audio-user] XFS on FC2; experiences, pointers?

by eviltwin69＠cableone.net

On Thu, 06 Jan 2005 09:58 , Joey Reid <joe(a)joeyreid.com> sent: >that looks mega-complicated, jan. iirc, you can just type "linux xfs" at >the boot prompt when you boot off of the fedora cd/dvd. when you do it >should be available in disk druid. > Hey, I didn't know that. I'll try it on my next install. Thanks. >btw, I have been using xfs since fedora core 1, and have not had any >problems, although i haven't run any tests on it yet. > I'm running it on 5 PogoLinux S316s (3.5TB each) and it is blazing fast and stable. Jan

19 years, 4 months

[linux-audio-user] Re: FreeWheeling live looper prerelease

by JP Mercury

Mark Knecht wrote: > JP, > Freewheeling looks like a lot of fun. I look forward to trying it > out. > > Can it be tied into other soft synths or must it use fluidsynth? > > Cheers, > Mark Thanks for your suggestion, Mark. Like all jack apps, FreeWheeling can be tied to other apps such as softsynths. I specially integrated fluidsynth because I wanted a quick synth and the native interface to fluidsynth doesn't yet allow easy selecting of patches across Soundfonts. But lately there is such a profusion of great softsynths, it would be nice to integrate support to control them. I see generic interfaces such as patch browsers that communicate to other apps by MIDI or LASH. Then FreeWheeling could be used as a realtime controller environment for many linux audio apps. I think I am heading in this direction. Please let me know if there are specific types of control you'd like to see. Regards, JP Mercury

19 years, 4 months

Re: [linux-audio-user] spectral correction

by Kjetil Svalastog Matheussen

Nathaniel Virgo: > I don't remember ever using it but I think the Ceres spectral editor > does what you want, possibly, along with all kinds of other funky > stuff. There seem to be several versions by different people, I think > ceres3 is the most recent but I'm not sure. Not really. Ceres3 is based on a ~10 year old fork of Ceres. Both Ceres3 and Ceres are both still being actively developed independently of each other. They both have theire pros and cons. Generally (and probably stupid) said, ceres is more fancy while ceres3 is more academic. I'm thinking about renaming Ceres as Ceres4, because Ceres3 sounds newer and better than Ceres. But if I did, Ceres4 would sounds newer and better than Ceres3 again, which might not be true either. (Well, to be hounest, I sometimes think Ceres3 should be named something non-ceres though. It is a bit confusing.) --

19 years, 4 months

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Linux-audio-user January 2005