Sound from speaker transducers becomes more focused when an array of transducers are used together due to them all being in-phase on the axis of the array, and having phase-shift from colunm to column or from row to row for off-axis.epilot said:
In-phase sound adds in level while out-of-phase sound cancels.
The size of the transducers and the size of the array is determined by the sound frequency that needs to be focused.
