| 摘要 |
PROBLEM TO BE SOLVED: To increase a degree of freedom in terms of design of a game machine by allowing a parametric-type speaker to have functions other than those as a mere sounding device.SOLUTION: A game machine includes: a performance device M1; a parametric type speaker SPp; performance device control means M2 for executing performance operation by the performance device M1 by receiving a predetermined opportunity signal TS; and parametric type speaker control means M3 for outputting a predetermined sound signal from the parametric type speaker SPp as the opportunity signal TS. The sound signal is composed of inaudible sound. The performance device M1 also comprises a reception part M4 of sound signal, and the performance device control means M2. |
