| 摘要 |
PROBLEM TO BE SOLVED: To speedily operate a controlled object without causing misoperation nor disabled operation even in environment of exposure to the sunshine by receiving a sound signal composed of music related to a control item, deciding the control item, and controlling the control item. SOLUTION: When an operator who is a driver operates an operation button of a sound remote control unit 45 as a remote controller, a sound signal is radiated as a sound wave from a sound radiation hole and received through a sound pickup hole 88 of a car audio device 46 spatially at a distance. The sound signal received through the sound pickup hole 88 of the car audio device 46 is inputted to and analyzed by a sound reception unit of the car audio device 46 to decide a control item. An operation signal indicating the decision result is inputted to a control unit of the car audio device 46, for example, controls the control item of CD reproduction, etc., actually or display the contents of the control item on a display unit 51. |
