| 摘要 |
PROBLEM TO BE SOLVED: To control a musical sound according to a depressed key state and to improve the expressive power of the musical sound. SOLUTION: When a place answering to a key of a key board part 5 printed on a rear surface of a cover film 4 is depressed by a finger 19, its depressed position and its depressed area are detected by a touch panel 7 provided on the rear surface of the cover film 4, and since a CPU generates a velocity being a musical sound control signal based on the detected depressed area, and controls the musical sound of a pitch answering to the depressed position based on this velocity value, the musical sound is controlled according to the depressed are by the finger 19, and thus, the expressive power of the musical sound is improved. |
