发明授权
EP0992929B1 Background-sound control apparatus, background-sound control method, readable recording medium with recording background-sound control program, and video game apparatus 有权
Steurungsvorrichtung用于背景声音可读记录介质的背景声控制方法,其包括用于背景声音的控制程序,和视频游戏装置

Background-sound control apparatus, background-sound control method, readable recording medium with recording background-sound control program, and video game apparatus
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