Snapshots of the measured (top) and modeled (bottom) on-axis pressure fields inside the resonator when excited at three modal frequencies at small (blue) and large (red) amplitudes. In the experimental results, dots denote the actual measurements while the connecting lines are a product of interpolation. Model results were calculated via temporal integrations where modal truncation was set to N = 100 and where the geometry was aimed at emulating the experimental configuration, i.e., including a cavity at the entrance (driver’s inherent volume).