| 摘要 |
PURPOSE:To obtain an acoustic device which detects the presence of an attendant person and generates an optimum sound filed corresponding to the presence place. CONSTITUTION:This device is provided with plural sound output means 1-4, presence detecting means 7-10 which detect the presence of the human body, and a storage means 15 stored with the relation between the presence place of the human body and the sound output levels of the sound output means 1-4. Further, the device is provided with a control means 16 which controls the sound output means according to the output signals of the presence detecting means 7-10 and storage means 15. Consequently, when the presence place of the human body is detected by the presence detecting means, the control means 16 controls the sound output means according to the relation between the presence place and sound output means which is stored previously in the storage means 15 to generate the optimum sound filed for the attendant person. |
