| 摘要 |
PURPOSE: To switch the playing form every part and extract/delete a specified part by switching and selecting whether sound generation or playing is to be performed or not every playing part or every musical instrument part of the playing information of one-step automatic playing. CONSTITUTION: Each key of a keyboard 1 is scanned by a key scanning circuit 2, and the data showing key-ON and key-OFF is detected, and written in a RAM 6 by a CPU 5. It is compared with the data showing the ON/OFF state of each key stored in the RAM 6, and the ON-event/OFF-event of each key is judged by the CPU 5. When the step count data of a working memory 32 is in accord with the step time data, one step automatic playing is performed only for a one in which the one step bit of a mode flag resistor is '1' with respect to the track to which the note data of the coincident step time data belongs. |
