(a) Head movements and experimental measurement apparatus, (b) COMSOL head model and head displacement conditions. Blue denotes rotation from the center of the head, red denotes lateral displacement and black frontal displacement, (c and d) 2 × 2 30° and 180° span configurations. (c and d) correspond to the same room configuration RC1 and both speaker geometries are illustrated for clarity. (e and f) correspond to room configurations RC2 and RC3 and only the 180° span is depicted for brevity. The TV and couch are depicted for visualization only and were not included in the simulations.