Hi Martin, If you’re already using ambiX, you might try looking at inserting the ambix_converter_o3 plugin between the TOACore outputs and the decoder inputs. It can easily take care of the conversion for you. Note that in addition to channel ordering you also need to convert the normalization scheme from FuMa to SN3D (for input to ambiX). The converter plugin does both.
-Steven > On Mar 22, 2016, at 11:49 AM, Martin Dupras <[email protected]> wrote: > > Today I tried playback sources in third order Ambisonics on a 8+6+1 > hemispheric speaker array using Reaper. It didn't quite work as > intended so I'm trying to figure out where I've gone wrong. > > I was using the Blue Ripple TOA-Core panner plugin to position the > sound. I understand that Blue Rippler plugins use the Furse-Malham > convention. > > The only decoders that I could find to decode to my specific array > (using coefficients that I calculated using the Ambisonics Decoder > Toolkit) were the Ambix Plug-ins and AmbDec. > > I tried Ambix first, which I understand uses the ACN ordering > convention. I tried re-ordering the channels based on information that > I found here: > https://en.wikipedia.org/wiki/Ambisonic_data_exchange_formats#ACN. > But that didn't really work. > > I then tried to run 16 outputs out of Reaper into Jack, and from Jack > into AmbDec, again using my ADT-calculated coefficients. I understand > that AmbDec uses the Furse-Malham convention, so I would have thought > it was compatible with the output of the Blue Rippler plugins. But > again, that didn't really work well at all. > > In both cases the sound was coming from seemingly random places, and a > number of positions went practically silent. > > Any advice on where to go next? > > Many thanks, > > - martin > _______________________________________________ > Sursound mailing list > [email protected] > https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit > account or options, view archives and so on. _______________________________________________ Sursound mailing list [email protected] https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
