Thanks Archontis for mentioning also my little project! Since I moved out from Barcelona Media, I'm developing the project in my freetime and the updated repository changed to: https://github.com/davrandom/idhoa
I don't want to SPAM more... so if anyone is interested, just drop an email. d On Sat, Feb 20, 2016 at 8:58 PM, Politis Archontis < archontis.poli...@aalto.fi> wrote: > Hi Richard, > > In terms of literature for general HOA decoding, the parts are all around, > I personally like the papers by Franz Zotter cause they present all the > relevant information in a clear and usable manner. The All-round Ambisonic > Panning and Decoding paper in JAES I think has most of the stuff you’ll > need, and not only for the specific method. > > In terms of open code there are not so much stuff around. As the rest of > the people mentioned, one is Aaron Heller’s ambisonic toolkit, in Matlab, > which is very extensive! > https://bitbucket.org/ambidecodertoolbox/adt.git > > I have also released a Matlab library in a more educational manner, not so > much for efficiency as for readability, you can find it if you want to have > a look in: > http://research.spa.aalto.fi/projects/ambi-lib/ambi.html > This implements some recent decoders too, including the ALLRAD method > mentioned before, and another interesting one called CSAD (constant-angular > spread), which has constant energy vector magnitude and zero angular error. > You can also check energy/velocity vector plots for any decoder that you > choose to implement. Could be a good starting point for making your own > code. > > Additionally, a powerful but more complicated is the decoder generator of > Davide Scaini, from University of Pompeau Fabra and Barcelona Media, which > converges on an optimal decoder by iterative numerical optimization on the > velocity/energy vectors, in Python. You can find the implementaiton in: > https://github.com/BarcelonaMedia-Audio/idhoa > > Good luck with your project! > Archontis Politis > > > ________________________________________ > From: Sursound [sursound-boun...@music.vt.edu] on behalf of Dave Malham [ > dave.mal...@york.ac.uk] > Sent: 20 February 2016 20:56 > To: Surround Sound discussion group > Subject: Re: [Sursound] Ambisonic Decoder Design Resources > > I would definitely recommend Aaron's decoder toolkit and, in fact, the > whole oeuvre from the Benjamin-Lee-Heller group (BLaH). This can be found > at http://www.ai.sri.com/ajh/ambisonics/ > > Dave > > On 20 February 2016 at 17:58, Jörn Nettingsmeier < > netti...@stackingdwarves.net> wrote: > > > On 02/20/2016 06:22 PM, Richard Graham wrote: > > > >> Hi Archontis, > >> > >> I would like to design decoders for 2d and 3d arrays, 1st through > >> 3rd order (at least), both regular and irregular arrays. C code > >> examples would be incredibly helpful as I plan to develop decoders > >> for Pd and Max. > >> > > > > Fons' ambdec is GPL, and it comes with a nice set of example setups. > > It's C++, but the way Fons uses it, it reads pretty much like plain C. > > After all, a dsp loop is a dsp loop... > > > > Most importantly, I’d like to figure out how to calculate these > >> coefficients myself and I am having trouble finding literature on > >> how to do that. I have reached out to a few folks who used their own > >> programs to calculate coefficients. Essentially, I’d like to build > >> my own program in the C programming language. > >> > > > > Aaron Heller has a Matlab/Octave toolkit out that will generate matrices > > for you, and it's completely open. But it relies on quite complex > > functions of the framework... His solutions are used at CCRMA, to > > great effect. Probably your best starting point. > > > > Richard has one but keeps it proprietary, Fons has one but also doesn't > > like to part with it (although he has been very generous about > > generating custom Ambdec setups for people, me included). > > > > For the nitty-gritty, check out the papers from recent Ambisonics > > symposia and the ICSA conferences. Talk to Thomas Musil from Graz for > > the old-school, lovingly hand-optimized matrix approach, or to Zotter et > > al. for the All-Rad approach that works for arbitrary setups but is > > quite complex and kind of brute-forceish. I can dig them up for you if > you > > can't find them. > > > > Shortly, I will have access to a 16-channel ring on the horizontal > >> plane and a b-format cube. This system will be modular and > >> configurable into irregular setups, too. > >> > > > > nice! but unless you really need extremely high horizontal resolution for > > research purposes or a truly humongous listening area, a better use for > all > > those speakers would be to make a more or less uniform 3D rig. > > gets you a nice dodecahedron for full third-order all around. > > > > > > best, > > > > > > jörn > > > > > > > > -- > > Jörn Nettingsmeier > > Lortzingstr. 11, 45128 Essen, Tel. +49 177 7937487 > > > > Meister für Veranstaltungstechnik (Bühne/Studio) > > Tonmeister VDT > > > > http://stackingdwarves.net > > > > _______________________________________________ > > Sursound mailing list > > Sursound@music.vt.edu > > https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, > > edit account or options, view archives and so on. > > > > > > -- > > As of 1st October 2012, I have retired from the University. > > These are my own views and may or may not be shared by the University > > Dave Malham > Honorary Fellow, Department of Music > The University of York > York YO10 5DD > UK > > 'Ambisonics - Component Imaging for Audio' > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > https://mail.music.vt.edu/mailman/private/sursound/attachments/20160220/829dd4d1/attachment.html > > > _______________________________________________ > Sursound mailing list > Sursound@music.vt.edu > https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, > edit account or options, view archives and so on. > _______________________________________________ > Sursound mailing list > Sursound@music.vt.edu > https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, > edit account or options, view archives and so on. > -------------- next part -------------- An HTML attachment was scrubbed... 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