| 摘要 |
PURPOSE:To obtain the keyboard device of an electronic musical instrument which enables repetitive keying performance wherein the same key is instantaneously struck plural times while obtaining a touch feeling similar to an acoustic piano. CONSTITUTION:The keyboard device has a hammer arm 2 which is rotationally displaced from an initial position to a final position attending on the depression of a key 5 is pressed down and rotates from the final position to return to the initial position by dead load and when the hammer arm 21 is rotationally displaced to the final position, a hammer arm switch 42 detects it and outputs a key-ON signal instructing the start of sound generation. A lower switch E detects whether or not the hammer arm 21 is rotated and returned to the initial position and when the key 5 is pressed down unless the hammer arm 21 is rotated from the final position to be returned to the initial position, a key switch 43 detects it and outputs the key-ON signal. |
