This animation is an example of multizone spatial audio. The circular zone on the left shows a bright zone with a desired 2kHz planewave at an angle of +15°. The circular zone on the right shows the quiet zone. The zone weightings are set the same as those in the paper mentioned below.
The size in space of this soundfield can be seen from the measurements on the axes.
This setup was simulated using a technique described in the paper "Multizone Soundfield Reproduction using Orthogonal Basis Expansion" by Wenyu Jin, W. Bastiaan Kleijn and David Virette.
Note: The title "Real" is because this is the real part of the soundfield represented by complex numbers.
