LOUDSPEAKER APPARATUS

摘要

A loudspeaker apparatus exhibiting a sound radiation directivity so controlled that the position of a speaker may agree with the direction in which the voice from the loudspeaker is heard. The loud speaker apparatus has four loudspeaker units arranged in line. The voice uttered by a speaker is collected by a first loudspeaker unit on the extreme left. The first loudspeaker unit transfers the voice signal to the other second to fourth loudspeaker units. A control unit transmits a delay pattern for making the virtual focus of the radiated sound beam agree with the speaker to the second to fourth loudspeaker units. The second to fourth units radiate sound beams generated according to the transferred uttered voice signal while controlling the beams with the transmitted delay pattern.