Linux-audio-user February 2015

linux-audio-user@lists.linuxaudio.org

69 participants
58 discussions

by Len Ovens

Much more practical than audio over wireless is ardroid a remote control Ardour. It just works really nice. There are a number of other remote controls out there for the Android one of which looks like a complete MC set up (TouchDAW) but I am realizing (besides not getting it to work) that it is really more than I want or need in a touch control. And would likely lead to finger trouble. The other nice toy was goOSC which can be set up however someone wants it. It will take me a while to get it doing something useful as the learning curve is a bit bigger. But very flexable. A standalone GUI on the computer for creating layouts would be great... I should make one :) The only thing I would like with ardroid is one fader/peek meter so I can adjust the input level which at my instrument. I realize the meter would be slow and laggy and so would suggest only a static peek with reset. It could even be text. Most of the fader like controls I have seen on these soft controlers jump. That is they don't move it you touch the control away from where the control is but if you then slide your finger up to where the "knob" is, the center of the knob will jump to where the finger is when the finger reaches the edge of the knob. This may be something to do with the android GUI. I would suggest that a better way would be to take a touch anywhere on the fader to be as if it was where the fader level already is and move in whatever direction the finger moves from there... if the GUI allows such things. -- Len Ovens www.ovenwerks.net

9 years, 7 months

OpenMusic 6.9 - new build for Ubuntu (.deb) and Fedora (.rpm)

by anders.vinjar＠bek.no

New builds available at: https://forge.ircam.fr/p/OM/downloads/ OpenMusic homepage: http://repmus.ircam.fr/openmusic/home Main news: - new package scripts for RPM and DEB, to take care of necessary (32-bit) dependencies for OM. (OM is still 32-bit only from lack of access to 64-bit lw-compiler.) - the music-fonts OM uses (omfonts) get installed as part of the main package, ie. the extra package is no longer needed - a non-standard dependency: libsdif.so ("SDIF: Sound Description Interchange Format" - http://sdif.sourceforge.net/) - is provided as RPM- and DEB-packages at the download site Other news: - PortMidi handles midi i/o, using the same code on all 3 supported platforms (Linux, OSX, Windows) - fluidsynth is no longer part of the OM-application, instead users are expected to connect to their preferred MIDI-synth to play back MIDI from OM - various new features and bug-fixes Packages are checked on Fedora 20+21, and Ubuntu 14.04.1. Thanks for all bug-reports. -anders

9 years, 7 months

master levels

by Brent Busby

Something has been bugging me... Ardour is doing 32-bit FP math to handle samples internally. And yet, when I change the volume on the master fader, even if I compensate for the volume change on my RME Multiface's physical volume knob for the headphone monitor, I'd almost swear I can hear some sort of change in the audio. I'm not using any post-fader plugins. I'm probably just fooling myself, but is it possible to change the perceived audio by just changing the output level over a 4-5db range when you've got a precision like Ardour is using, and you're listening through decent 24-bit converters? In a related question (which was the real reason I wanted to know), what kind of levels should we be shooting for in the master output anyway? Of course, in the old analog tape world, they used to shoot for zero, maybe a little hotter if you wanted some saturation. In digital, they say mix to about -3 or -4db. And mastering houses seem to want more headroom than that (-6 or 7db), even though in priciple, with 24-bit resolution, they could just adjust it themselves without changing it timbrally (true?). Why do they care what your maximum level is as long as it's 24-bit and it's not clipping? Commercial CD's these days seem to be mastered with the idea that if the level ever fell below -1db, that would be a sin against God. Suppose I'm just trying to produce a demo that can be burned to CD, uploaded to a streaming service, or given to a mastering house. Is there a different ideal level for those various uses? I suppose the question I'm wondering is, if you've got it just the way you like it at some particular master fader setting, is anything harmed by making it a little hotter before you export, especially if you're going to be putting a track on CD where it will be only 16-bit? Or should you just keep it where it is, even if you're wasting some headroom? -- + Brent A. Busby + "We've all heard that a million monkeys + Sr. UNIX Systems Admin + banging on a million typewriters will + University of Chicago + eventually reproduce the entire works of + James Franck Institute + Shakespeare. Now, thanks to the Internet, + Materials Research Ctr + we know this is not true." -Robert Wilensky

9 years, 7 months

Calculating total play time

by Janina Sajka

Hi, I need to calculate the total playing time of the audio files in a particular folder. These are variously encoded--flac, ogg, and even some mp3. Anyone know how to do this, preferably from the cli? Or, perhaps one of the music player apps can provide this datum for a folder? tia Janina -- Janina Sajka, Phone: +1.443.300.2200 sip:janina@asterisk.rednote.net Email: janina(a)rednote.net Linux Foundation Fellow Executive Chair, Accessibility Workgroup: http://a11y.org The World Wide Web Consortium (W3C), Web Accessibility Initiative (WAI) Chair, Protocols & Formats http://www.w3.org/wai/pf Indie UI http://www.w3.org/WAI/IndieUI/

9 years, 7 months

MIDI recorder

by Will Godfrey

Can anyone suggest a program that monitors a MIDI stream and sends it straight to a .mid file without adding or subtracting anything at all? -- Will J Godfrey http://www.musically.me.uk Say you have a poem and I have a tune. Exchange them and we can both have a poem, a tune, and a song.

9 years, 7 months

Re: [LAU] MIDI recorder

by Will J Godfrey

On Wed, 4 Feb 2015 00:01:15 +0100 (CET) "F. Silvain" <silvain(a)freeshell.de> wrote: > Will Godfrey, Feb 3 2015: > > > Can anyone suggest a program that monitors a MIDI stream and sends it straight > > to a .mid file without adding or subtracting anything at all? > In addition to arecordmidi smfrec, part of Midish (http://www.midish.org). This is also a CLI tool. > ... > > Ta-ta Thanks again. Actually arecordmidi told me exactly what I needed to know - A sequencer (unnamed to protect the guilty) is silently inserting extra CCs at start and end of run :( -- It wasn't me! (Well actually, it probably was) ... the hard part is not dodging what life throws at you, but trying to catch the good bits.

9 years, 7 months

CPU fan and video card recommendations ?

by Dave Phillips

Greetings, I've built a new machine around an AMD FX6300 CPU, currently using the packaged fan that came with the CPU. I'd like to replace it with a quiet device, something like the Zalman fans I used with previous sockets. Alas, the new design doesn't accommodate my old fan so I need some advice. What's recommended in the ~$50(US) range ? It doesn't have to be absolutely silent but quieter is better. Case is an Antec Sonata II, the PSU is a Seasonic 650W unit, also very quiet. I'm also looking for a replacement for my video card, currently an old Gigabyte card with an nVidia 7600GS chipset, very outdated. I don't need the cutting edge but I do need accelerated 3D graphics so nVidia is my choice. Any recommended *fanless* boards in the $100-150 range ? TIA! Best, dp

9 years, 7 months

Re: [LAU] qjackctl: disable baloon popups?

by David Jones

On Feb 4, 2015 12:21 AM, Hermann Meyer <brummer-(a)web.de> wrote: > > > Am 04.02.2015 um 10:24 schrieb IOhannes m zmoelnig: > > -----BEGIN PGP SIGNED MESSAGE----- > > Hash: SHA256 > > > > this is something that has annoyed me endlessly for years, and i still > > haven't found a solution. > > the issue is minor (that's why i haven't asked before), but annoying > > nevertheless. > > so: > > > > i'm using qjackctl with the "system tray icon" enabled. > > when i close the application window, qjackctl keeps running and is > > accessible via the system tray. > > > > cool. that's what i want. > > > > however, every single time i close the main qjackctl window, a balloon > > pops up in my notification area, telling me that the "program will > > keep running in the system tray" and how to really shut it down. > > the first time i read this, this information was informative (i > > suppose, it has been years). but no longer. > > i already know that the program will keep running. that's why i'm > > using the system tray. there's no need to tell me again and again > > (even within a single session!). > > > > there *must* be simple way to "not show this message again", without > > completely disabling tray notifications. but how? > > > > btw, this is on Debian/sid with xfce4. > > > > > > fgasdmr > > IOhannes > > Hi > > I just click on the system tray icon to hide/show qjackctl, instead > "close" it. > > regards > hermann Hmm, not @ my puter right now, but didn't qjackctl have a preference setting about notifications? Altho hermann's clicking on system tray icon sounds useful. Glad to hear of another Debian Sid w/ XFCE user here. :)

9 years, 7 months

Which kernel do you use?

by Hermann Meyer

I've get a new (used) mobo, and played with the kernel version to use. So far I've tested all from 3.19.0-rc5 down to 3.4.104 Those, were rt-patches available I test as rt-kernel. Best results, I only get with the 3.4 series, all later kernels introduce Xruns here, sporadic, unrelated to the dsp load, even, when just jack is running. I build then all with the same configuration, play a bit with configurations deselect hyper-threading on the latest kernels, use threadedirqs, all to no avail. Only 3.4.xxx-rt kernel run absolute smooth. So, which kernels with witch configuration do you all use? System: Host: box Kernel: 3.4.105-rt129 x86_64 (64 bit gcc: 4.9.2) Desktop: Cinnamon 2.2.16 (Gtk 3.14.5) dm: lightdm Distro: siduction 14.1.0 Indian Summer - cinnamon - (201411230307) Machine: Mobo: Intel model: DG965MQ v: AAD37419-302 Bios: Intel v: MQ96510J.86A.1250.2006.1005.1532 date: 10/05/2006 CPU: Quad core Intel Core2 Quad Q6600 (-MCP-) cache: 4096 KB flags: (lm nx sse sse2 sse3 ssse3 vmx) bmips: 19200 clock speeds: min/max: 1596/2394 MHz 1: 2394 MHz 2: 2394 MHz 3: 2394 MHz 4: 2394 MHz Graphics: Card: NVIDIA GT216 [GeForce GT 220] bus-ID: 01:00.0 chip-ID: 10de:0a20 Display Server: X.Org 1.16.1.901 drivers: nouveau (unloaded: fbdev,vesa) Resolution: 1600x900(a)59.98hz GLX Renderer: Gallium 0.4 on NVA5 GLX Version: 3.0 Mesa 10.3.2 Direct Rendering: Yes Audio: Card-1 NVIDIA GT216 HDMI Audio Controller driver: snd_hda_intel bus-ID: 01:00.1 chip-ID: 10de:0be2 Card-2 Creative Labs SB Audigy driver: snd_emu10k1 port: 1000 bus-ID: 07:00.0 chip-ID: 1102:0004 Sound: Advanced Linux Sound Architecture v: 1.0.25 Drives: HDD Total Size: 164.7GB (26.4% used) ID-1: /dev/sda model: HDT722516DLA380 size: 164.7GB serial: VDK71CTCEBBN5X

9 years, 7 months

Updated Ardour Tutorial

by Bruno Ruviaro

Hi all, Sorry for cross-posting. I just finished complete update to the old and good Ardour FLOSS Manual from 2009. All new screenshots (Ardour 3.5.403), and I updated the text wherever necessary: http://brunoruviaro.github.io/ardour3-floss-tutorial/ A few cosmetic changes still to be done, like removing the date from the header of every post, but overall it's ready to use. I'm using GitHub Pages, so it should be relatively easy for others to contribute, fork, and remix the manual. In the near future I plan to add a page explaining how to do so. Enjoy! Cheers, Bruno

9 years, 7 months

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Linux-audio-user February 2015