In all examples below the following apply:

Frequency: 200Hz
Source distance: 2m
Number of speakers: 51
Speaker array radius: 4m
Display radius: 3.95m
In all cases the speaker signals are the output of an AMB decoder.

The last picture shows that it is possible to extend the usable listening area beyond the virtual source distance, except in the direction of the source.
This requires specific weights applied to the higher order components. I will not reveal the exact method used for now.

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