| 摘要 |
PROBLEM TO BE SOLVED: To allow a game-parlor employee to easily recognize fraudulence performed in an individual game machine without preventing the game parlor from showing off attractiveness of a specific game machine among a plurality of game machines set in the game parlor. SOLUTION: A presentation sound such as an in-bonus melody and an alarm sound such as a setting change sound suggesting that the set values are being changed are output from speakers of the slot machine. A sound processing part mounted on a presentation control board reproduces the presentation sound and alarm sound to be output from the speakers. The volume level of the output sounds is set by an electronic volume included in the sound processing part. The sound processing part sets the level of the electronic volume at the level set by a volume control lever when the presentation sound is reproduced and output, but sets the level of the electronic volume at the maximum level regardless of the level set by the volume control lever when the setting change sound is reproduced and output. COPYRIGHT: (C)2009,JPO&INPIT
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