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Focused source in nfc hoa

Hello :slight_smile:

Is the spat engine can produce focused virtual source inside the system of loudspeakers?
Sure i can move a source/track at coordinate inside speakers positions without any problem but will it produce a soundfield like the one on the picture below?

I work on HOA 2D.


Spat implements NFC-HOA (near field compensated HOA). The corresponding panning type is called “nfchoa2d” and “nfchoa3d” (supported in spat5.pan~ and spat5.spat~). You can also check the underlying filters with the spat5.hoa.nfcfilters object.
So, in theory you can produce focused virtual source.
In practice, this is not so convincing, and I would recommend to not use it.