Patent ID: 7817812

Claim:
An audio reproduction system comprising: a first audio input signal and a second audio input signal; a first, a second, a third and a fourth loudspeaker wherein said first, second, third and fourth loudspeakers are located at the first, second, third and fourth vertices, respectively, of a quadrilateral, and are oriented to radiate sound away from the quadrilateral; wherein the maximum distance between any two of said first, second, third and fourth loudspeakers is not more than four times the minimum distance between any two of said first, second, third and fourth loudspeakers; means for transmitting said first input signal to said first and said third loudspeakers, wherein said first and third loudspeakers reproduce sound associated with signals received by said first and third loudspeakers; and means for transmitting said second input signal to said second and fourth loudspeakers, wherein said second and fourth loudspeakers reproduce sound associated with signals received by said second and fourth loudspeakers, wherein no two adjacent loudspeakers reproduce the same input signal; and wherein the sound reproduced by said first, second, third and fourth loudspeakers is perceived by a listener to be a sound source larger than the physical size of the quadrilateral.