| 摘要 |
PROBLEM TO BE SOLVED: To allow a clerk of a game parlor to easily detect a fraud committed on an individual game machine and not prevent the game parlor from showing off a specific game machine in a plurality of game machines installed in the game parlor.SOLUTION: A speaker of a slot machine outputs a performance sound such as a bonus music and an audible alarm such as a settlement sound representing that tokens are being settled. A sound processing part mounted on a performance control board reproduces the performance sound and the audible alarm and causes the speaker to output the sounds, however, a volume level of the output sound is set by an electronic volume included in the sound processing part. When reproducing and outputting the performance sound, the sound processing part sets a level of the electronic volume at a level set by a volume adjustment lever, however, when reproducing and outputting the settlement sound, sets the level of the electronic volume at a maximal level regardless of the level set by the volume adjustment lever. |
