| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a game machine, even when one operation button goes wrong, allowing a player to operate the other operation button and setting volume to desired volume.SOLUTION: The game machine includes an operation reception part 310, a volume setting part 320, and a performance sound output part 330. When the operation reception part 310 receives an operation of a volume decrease button 121, the volume setting part 320 determines whether the operation is a normal operation or a special operation. When determining it as the normal operation of the volume decrease button, the volume setting part sets the volume to decrease and, when determining it as the special operation of the volume decrease button 121, sets the volume to increase. Further, when the volume operation reception part 310 receives an operation of a volume increase button 122, the volume setting part also determines whether the operation is the normal operation or the special operation. When determining it as the normal operation of the volume increase button 122, the volume setting part sets to increase the volume and, when determining it as the special operation, sets the volume to decrease.</p> |
