| 摘要 |
<P>PROBLEM TO BE SOLVED: To attract a person's attention to an advertisement effectively. Ž<P>SOLUTION: A controller 10 connected with a super-directivity speaker 40 which outputs sound in a specific direction, and a speaker mounting seat 41 which adjusts the output direction of sound from the super-directivity speaker 40 controls a camera 50 to take a photograph in front of the indication side of an advertisement, controls a detection means to detect persons who appears in the photographed image and to detect a figure who is turning to a predetermined direction as an objective person, and controls the speaker mounting seat 41 to adjust the output direction of sound from the super-directivity speaker 40 toward the objective figure, and to output sound from the super-directivity speaker 40. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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