Linux-audio-dev

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7440 discussions

[linux-audio-dev] Buffer size settings - Mac/Windows

by Michael Ost

Hi. Does anyone out there know what the audio buffer size settings in Windows and MacOS really mean? If you say "128 samples" does that translate to 2 buffers of 128 samples --- one buffer playing, one buffer filling --- or 2 buffers of 64 samples? Is it 256 samples of latency or 128? I realize this isn't _exactly_ a Linux audio question, but perhaps someone out there knows something about this. We're trying to get an apples to apples comparison of our Linux/ALSA based system with a Windows/MacOS system. We set the ALSA driver to 2x128 and we get results that jibe more with the 256 setting in Windows. But when we hooked a Windows system up to a scope it looked more like the 128 sample setting was running 2x64 samples. So... we're confused. Any pearls of wisdom out there? ... mo =================================== Michael Ost, Software Architect Muse Research, Inc. most(a)museresearch.com

20 years, 3 months

[linux-audio-dev] Sliders 2

by Thorsten Wilms

Hi! Worked out a design for fan-sliders: http://wrstud.urz.uni-wuppertal.de/~ka0394/forum/04-06-12_fan_slider_02.png I wanted the whole slider to appear raised, emphasizing it's clickable everywhere. Therefor the glass capsule look serves a purpose, and is not just eye-candy. The orange/yellow is supposed to give enough contrast in brightness alone, and to give a feel of energy, without being too agressive. First 3 sizes, to see how it looks like down to quadratic for replacing small knobs (not sure about that). Then on mouse-over. It must be imediately clear, that there is this functionality, and I hope this will make noobs try what happens when moving the pointer towards that area. Also doubles as alternative to the usual highlighting for now. This initial area fades out to the outside, as does the part right of the pointer position when the pointer is outside the main slider. This is for indicating that you can always move farther outwards (well, screen edges could be the limit, but shouldn't be, IMHO) I moved away from showing straightened lines on the outside (reiterating the plain slider). I thought it would make interpretation easier, but now think it only leads to a weird distorted 3d look. Note that the mouse pointer will be offset from the mark according to where the user clicked on the slider. Such behaviour might seem strange first, but I know from Blender that one can get used to it in not time, and then it's just fine. And finaly showing a little transparency. Should allow to compare with other sliders that would otherwise be hidden. But must be carefully adjusted, to not just result in a mess on screen. On mouse buttons and modifiers: - Left is clear - Right should be reserved for context menu. But who says a slider can't have one: min, max, reset/center, copy/paste ... - Middle button could be used for jump mode (value snaps to mouse position imediately) - Wheel and +/- keys could work on mouse-over already Now Ctrl is used to emulate right-click on the Mac and I believe in Blender. Therefor Ctrl-leftclick should be configurable. What about middle-click emulation? Shift could be used to open the fan area enlarged right above the slider, or any other way as shortcut to higher precison. Alt for changing the value in steps, maybe. --- Thorsten Wilms

20 years, 3 months

[linux-audio-dev] Re: linux-audio-dev Digest, Vol 9, Issue 49

by Kjetil Svalastog Matheussen

Marek Peteraj: > > > > Ouch, never be sarcastic/ironic on e-mail. I completely agree with > > you. I though that was clear by my "Oh..." comment which you had > > cut away. The point was: _i_ actually want to customize everything > > via scheme-scripts (that is true), which Tim Hockin made (some kind of) > > a joke about. And by saying that I tried to express that what Tim Hockin > > perhaps means is ridiculous, does perfectly makes sense for > > other. We need to have choises/alternatives/anarchy/etc. because > > we are all different, etc. > > Were not that different actually, we're human beings ;) > > Besides, look at the CD vs. tons of DVD "standards" issue. > Having lots of opportunities in DVD burning world can make you perfectly > incompatible with your friends. > > That's why CD still works. > Thats not a valid analogy. I was talking about customizing user interfaces. > And Kjetil - you're a perfect minority and actually being ignorant to > those who are the exact opposite. Freedom will stay on linux. It's > because it's open source. > I have a feeling you are trying to start a flame-war? --

20 years, 3 months

Re: [linux-audio-dev] [OT] marketing hype

by Kjetil Svalastog Matheussen

Marek Peteraj: > > > > Personally speaking, as a free software developer I don't care if my > > programs are deemed as sucessful, they work for me, and handful of other > > people - this makes me happy :) > I'd like to see what other developers of the most popular linux audio > projects think. Because if they share your opinion, i'd rather save some > bucks and buy myself a mac. > Linux audio is perfectly unusable for me. Currently. I do this because I like to do cool things I beleive no one has ever done before. And I like unix and I love fvwm, emacs, bash, guile, etc.. I also have access to all the sources in the operating system, all the drivers I use (except for the nvidia driver :((( ), all the libraries, all the applications, the sources are available for everything. I have full control. This makes it theoretical possible to make the ultimate sound system. :) If I did this because I wanted to be a superstar or something, I would have written for windows or mac, not AmigaOS (not that much anymore) and linux which is the case now. And no, linux audio is definitely not perfectly unusable for me. Quite the contrary; pd, supercollider, snd, ladspa, alsa, jack and the very low-latish kernel make it to be a very usable platform for creative work you can't do in other OS's. --

20 years, 3 months

[linux-audio-dev] [ANN] Specimen 0.3.0 released

by Pete Bessman

The latest release of Specimen, a midi controllable audio sampler for Linux, adds 4 LFOs which can modulate volume, panning, cutoff and resonance into mix. Additionally, the LFOs can be tempo synced to either midi or the jack-transport mechanism. Available for immediate leeching from www.gazuga.net, or you can download the tarball directly here: http://www.gazuga.net/specimen-0.3.0.tar.gz I'm working on a roadmap for Specimen, and I'm interested in hearing what features people are most interested in having. If there's something you want Specimen to do, let me know; the most popular features will get incorporated first. [pb]

20 years, 3 months

[linux-audio-dev] Sliders

by Thorsten Wilms

Hello again! The discussion about linear or radial mouse movement for knobs finaly got me to mockup an idea i had in my mind for sometime already. For now I call it fan sliders: http://wrstud.urz.uni-wuppertal.de/~ka0394/forum/04-06-10_fan_slider_01.png It's all about concept, not style. The idea is to allow rather small sliders, but on mouse-down lines from top and button appear on one side (important for making the feature discoverable). Outside of the inital slider the pointer position is indicated by the crossing middle and vertical line. The straight horizontal extension is only meant to make reading easier. So up/down is value change, outwards increases precision (can of course be turned for stuff like pan). If the graphics do not fit on the screen, it still can work because the value is indicated by the initial slider and inclination of the center line (well, at least I hope so). Default expansion direction should be reading direction, but moving the pointer out on the other side could make it turn over. Close to the right screen edge the behaviour could be as known from menus. The first mockup has a slider where the dragable part is clearly defined. The second gives a stronger sense of value, but is not clear about where to click (I propose everywhere on the slider area, always grabbing the actual value. No special behaviour like known from scrollbars). It's also more space efficient, because the whole are can be used (with the other one a half button must be spared on both ends each.) For those concerned about precision of pointer movement / inadvertently changes to precision while adjusting value: Instead of linear spreading out, it could be stepped (lines looking like stairs). But that would be much less elegant. Comments, please! --- Thorsten Wilms

20 years, 3 months

[linux-audio-dev] Re: Knobs / widget design

by Juhana Sadeharju

Are you all on vacation because we have 60 mails per day? Horizontal motion is better than vertical. Try it! I can move the pointer horizontally 1000 pixels easily without moving my hand -- I just rotate hand and skew fingers, fast. For vertical motion I have to slide the whole arm on the table -- feels bad and is slow. Juhana

20 years, 3 months

Re: [linux-audio-dev] [OT] marketing hype

by Kjetil Svalastog Matheussen

Alfons Adriaensen: >On Thu, Jun 10, 2004 at 07:24:59PM +0200, Kjetil Svalastog Matheussen wrote: >> >> Tim Hockin: >> > >> > I know Linux people love to claim how choice is our strength, but I think >> > it's bunk. Linux needs a single GUI environment that has a lot of deep >> > flexibility >> >> Yes! I completely agree with this. > >What exactly do you mean by Linux "needing" something ? > >And how are you going to impose that single GUI environment ? >Will you take me to court when I write a new window manager. or >a widget that doesn't have your 'imprimatur' ? > >If you want your freedom to program limited, please goto >Windoze or MAC. But please do no impose your limitations on >others. Ouch, never be sarcastic/ironic on e-mail. I completely agree with you. I though that was clear by my "Oh..." comment which you had cut away. The point was: _i_ actually want to customize everything via scheme-scripts (that is true), which Tim Hockin made (some kind of) a joke about. And by saying that I tried to express that what Tim Hockin perhaps means is ridiculous, does perfectly makes sense for other. We need to have choises/alternatives/anarchy/etc. because we are all different, etc. --

20 years, 3 months

Re: [linux-audio-dev] [OT] marketing hype

by Kjetil Svalastog Matheussen

Tim Hockin: > > I know Linux people love to claim how choice is our strength, but I think > it's bunk. Linux needs a single GUI environment that has a lot of deep > flexibility Yes! I completely agree with this. > (and I don't mean Scheme config files :) Oh... :) --

20 years, 3 months

[linux-audio-dev] Re: linux use (was [OT] marketing hype)

by gml＠xs4all.nl

> Date: Fri, 11 Jun 2004 13:21:05 +0200 > From: Tim Orford <tim(a)orford.org> > > the major weakness in this setup for me is the neccesity to render the > midi before mixing. At least that means all elements of the arrangement > can be visualised and edited in one place, but re-editing the rendered > parts is problematic. ....snip > i wonder if this is a concern to anyone else? I see your point. The difference is that I only use MIDI instruments for certain specific things, where I write the parts on the piano and/or paper enter them in the computer and make a few small edits. But with a specific instrument that I like and don't have to tweak. Whereas the effects and mixes and montages I all do with raw audio. So I never missed the kind of global sessioning because I don't use MIDI that way. > > Despite your comment about the 'mega-application', both Rosegarden and > Ardour aim to be such things, but dont, at the current time, appear to > do anything that the 2 apps you mentioned cant. besides interconnecting with about all other linux audio apps. Which was my point. I have nothing against applications that can do a lot, but I don't like applications that are islands. cheers Gerard

20 years, 3 months

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Linux-audio-dev