Patent ID: 8351616

Claim:
A loudspeaker array comprising: a plurality of at least three similar bass range loudspeakers arranged relative to an intended principal axis of a cardioid sound field for end fire generation of the cardioid sound field from the loud speaker array; at least first and second pairs of mutually spaced loudspeakers from among the plurality of at least three similar bass range loudspeakers, with the second pair of loudspeakers following the first pair of loudspeakers for end fire generation of sound and the space separating the loudspeakers of the first pair of mutually spaced loudspeakers being substantially less than the space separating loudspeakers of the second pair of mutually spaced loudspeakers parallel to the principal axis; and an audio signal source and processing means coupled to apply a bass audio excitation signal of the same frequency spectrum to the plurality of at least three bass range loudspeakers with appropriate delays to selected bass range loud speakers for producing the end fire generation of the cardioid sound field.