将MIDI设备的所有参数恢复到原厂设置。它一般在应用模式（UTILITY或GLOBAL）中，通常在标准MIDI乐曲开头自动发送的系统专有信息，就是将对应的音源初始化，抹去前面播放的乐曲对音源所做的各种修改，使客观存在还原到缺省值，然后再进行相应的设置，（如改变声部模式，弯音范 Reset all MIDI device parameters to factory defaults. It is usually in the application mode (UTILITY or GLOBAL), usually in the beginning of the standard MIDI song automatically sent the system-specific information is to initialize the corresponding audio source, erase previous songs played on the source of a variety of modifications made objective There is restored to the default value, and then make the appropriate settings (such as changing the part mode, bend pitch