| 摘要 |
PROBLEM TO BE SOLVED: To determine number of beats depending on a performance position which indicates timing when a user desires announcement, and justify how many beats remain until the performance position based on the beat's announcement, by providing a number-of-beats determining means for providing number- of-beats to be announced, and an announcing means which displays the provided number-of-beats to be announced. SOLUTION: By pressing a restart switch 40 to start automatic performance and stopping the automatic performance at a desired position, or by pressing a switch 48 for returning the performance position and a switch 50 for proceeding the performance position during stopping of the performance, performance position where announcement by count-in is required is set. Then, by operating a count-in ON/OFF switch 46 to make count-in function effective and by pressing the restart switch 40, a count-in mark is displayed and number-of-beats which remains until a user set performance position is sequentially displayed. |
