| 摘要 |
PURPOSE:To execute a delicate touch expression corresponding to a performing method and a performer's choice by detecting a moving speed of a key extending from a push-key to a separate-key, inputting push-key data of each key by a time division, and detecting a continuous touch state. CONSTITUTION:A speed detecting means, namely, a magneto-electric converting part for detecting a moving speed of a key 4 moved by a push-key is installed, and when a magnet 10 is inserted into the inside of a coil 12 by the push-key, and a magnetic field works on the coil 12, electromotive force corresponding to the moving speed of the key 4 is generated in the coil 12. Also, a touch detecting part 26 for inputting a voltage Vr generated in a resistance 20 is provided, a variation of the moving speed extending from its push-key to the separate-key is inputted as push-key data at every key 4 by a time division, and a touch state of each key 4 is detected by its push-key data. In such a way, a delicate operation of the key 4 and its rise state, etc., can be expressed delicately, and a musical performance corresponding to a performing method and a performer's choice can be executed. |
