Linux-audio-user August 2011

linux-audio-user@lists.linuxaudio.org

101 participants
97 discussions

by Ken Restivo

I really like AVLinux and I want to thank everyone on here who's been recommending it to various people for a long time. It's a Debian remix, basically, so I'm right at home. It's solid and it has everything I need, plus it's easy to bring in the straight Debian repositories so I can put on it whatever I'm used to from Debian-land. I'm now using it on my own studio machine, and I set it up for a customer in a relatively very short time, got him up and running on an old PC with no hassles. The RT kernels from the AVLinux website worked; no tweezing required, no kernel compilation required. The docs are good. And there are nifty non-audio extras there like a whole choice of video editors, so I dipped my toes into video editing a little bit, which was fun. All in all, hooray for AVLinux, I'm impressed. -ken

12 years, 2 months

Problem connecting RME Multiface II and Behringer ADA8000

by Giorgio - Audiophilo

Hi all, i've recently bought a Behringer ADA8000 but i can't make it work with my RME Multiface II. I can't get any signal from the RME ADAT input. The Multiface II is set to master and the ADA8000 as slave and they are connected via wordclock and with a toslink cable (ADA8000 out -> Multiface II in). ADA8000 says it's locked, hdspconf says nothing is locked, and i have no lights on or blinking on the front panel of the Multiface II. Has anyone a clue? Thank you in advance. -- Giorgio Baù *Sound engineer* T.Rex Studio www.trexstudio.com

12 years, 2 months

3D Audio Mixing

by Reuben Martin

Don't know how many of you follow the progress of video / animation development, but Blender has a GSOC project involving 3D audio. It includes things such a audio sources moving in 3D space as well as things like the doppler effect for moving audio sources. There is an iteresting video demonstrating the current progress. http://www.blendernation.com/2011/07/30/gsoc-2011-3d-audio-tools/ -Reuben

12 years, 2 months

which packages are needed for ambisonics

by rosea grammostola

Hi, Which packages are needed for ambisonics? In other words, which packages should be in a distro, to provide people the right tools for working with ambisonics? I did a little research and found: ambdec amb-plugins ardour japa jconvolver drc aliki zita-rev1 probably: non-mixer Any missing or unneeded packages here? Thanks, \r

12 years, 2 months

Line array & bit rate check

by lorenzo cecchi

Hi all, I was wondering if is there any open source program made to controll and allign a Line Array system. I know that often Producers make their own software, that run on Mac or Windows, but i've never known anything about Linux software. Another thing i'd like to know is if it does exist a program for Linux that could check the effective bit rate and other things like THD, noise level, stereo crosstalk,etc.. about my sound card, just like this interesting software does: RMAA <http://audio.rightmark.org/products/rmaa.shtml>. Any answer is welcome! Saluti, Lorenzo

12 years, 2 months

paulstretch, python/commandline

by Atte André Jensen

Hi The picky program I was playing with in the recent thread was paulstretch. I always had trouble running it but I just found that there seems to be a commandline python version available. But unfortunately, it wasn't that simple. There are three versions available: https://github.com/paulnasca/paulstretch_python I was only able to make paulstretch_stereo.py do something, and only on mono files in "Microsoft PCM" wav format. So I made a wrapper in python that is more robust + inputs all the formats handled by mplayer and outputs all formats handled by sox, I placed it here: http://atte.dk/paulstretch To use it you need to 1) save http://atte.dk/paulstretch in your path and make it executable 2) get paulstretch_stereo.py: $ git clone https://github.com/paulnasca/paulstretch_python.git 3) place the files (at least paulstretch_python.py) in your path 4) install numpy, scipy: sudo pacman -S python2-scipy python2-numpy If anyone want's to play along, that'd be fun! Any findings regarding Pauls python scripts would be great. For instance I convert input to mono, but the result is stereo! I imagine keeping the file in stereo would result in better sounding results. Also, I tried to be clever and check for numpy and scipy in my wrapper, but since Pauls scripts run in python2 only, and python here (arch) falls back to python3, I found no way (elegant) to check if the python2 versions of numpy and scipy are installed from python3... We could (should?) maybe start patching Pauls scripts at some point, but this just to be able to do something usable with it, in the first place... -- Atte http://atte.dk http://modlys.dk

12 years, 2 months

sox (or other): Microsoft PCM

by Atte André Jensen

Hi all I have two files, file reports the following on them: RIFF (little-endian) data, WAVE audio, mono 44100 Hz RIFF (little-endian) data, WAVE audio, Microsoft PCM, 16 bit, mono 44100 Hz How can I convert the first to something that has the "Microsoft PCM, 16 bit"-part in file's output? Sox always seems to output the former... NB: It's for input into another program that is very picky with it's file type, so far it seems that only files with "Microsoft PCM..." works. -- Atte http://atte.dk http://modlys.dk

12 years, 2 months

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Linux-audio-user August 2011