| 摘要 |
PROBLEM TO BE SOLVED: To provide a game machine which can reliably output alarm sound.SOLUTION: In a game parlor, generally, arbitrary visitors are accepted, and among them are those who try to perform fraudulent acts out of malice in a variety of ways. On the other hand, a game machine has been developed on the assumption that there is a possibility for players with malicious intent to perform fraudulent acts and, when abnormality is detected, prescribed alarm sound is issued. Since sound volume of the alarm sound should not be adjusted by an arbitrary person, it is generally often fixed. However, in situations in which it cannot be fixed for various reasons, it is devised that the sound volume cannot be adjusted with physical operation. |
