| 摘要 |
PROBLEM TO BE SOLVED: To clearly present a listening position where a a listener can obtain suitable sound image control effects, by providing a listening position specifying means for visually clearly presenting the listening position where the listener obtains the suitable sound image control effects. SOLUTION: First and second laser devices 301 and 302 are provided on a speaker 100 for a left channel and third and forth laser devices 303 and 304 are provided on the speaker 200 for a right channel. The respective laser devices 301-304 adjust an emitting direction based on emitting direction control information sent from a control part and then, emit laser beams for prescribed time. Thus, the laser beams are emitted from the laser devices 301 and 303 to the left ear position L of the suitable listening position P. Also, the laser beams are emitted from the laser devices 302 and 304 to a suitable right ear position R. Thus, the listener recognizes the suitable listening position (left ear position and right ear position). |
