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Sapt5 and vbap2d for linear speaker array

Spat
#1

Hello dear community !

I’m working on multichannel piece utilising 16 speakers mounted on building facade along all 80m with 5m distance between them. I think to use SPAT5 as spatial engine and what i’ve get from documentation - vbap2d seems to be the best choice for encoder. is it the right solution for this kind of setup ?

Also, what is no clear to me - does the diffusion of moving sound sources would be calculated accoridng to listeners “head” position in the center or it’s every speaker individually receiving max volume the moment sound source moves through its center ?

thnx in advance !

#2

Hello,

No, you cannot use vbap2d for linear speaker array. There will be error messages printed in the Max console if you try to do so.
For linear speaker array, you have basically two options: KNN panning or WFS.
Have a look at spat5.pan~ and spat5.wfs~ help patchers for details.

KNN is independent of any “head position”.
WFS can consistently cover a large listening area; nevertheless the calculation is done w.r.t. the listener head position in the center of the coordinate system.

Hope this helps,
T.

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