| 摘要 |
PURPOSE:To make a realistic simulation by detecting the envelope level of musical sounds when a finger is detached form the key of an electronic musical instrument by means of key detaching information of a key detachedness detecting means based on key depressing information which has a corresponding relation with the key detaching information. CONSTITUTION:A key operation detection circuit 22 accumulates high sound information and key pressing and detaching information in its built-in buffer based on the key manufacture of a keyboard 20 provided with plural keys designating high sounds of musical sounds. These information are supplied to a microcomputer 21 through a bus 23. Similarly, key touching strength for pressing and detaching, etc., of key depressing and detaching speeds, etc., based on key operations are accumulated in the built-in buffer of a touch response detection circuit 24 as touch response information. In the microcomputer 21, operating states of an operator group 25 which adjusts the tone quality, sound volume, etc., of a harpsichord, etc., are stored as operator group data. The microcomputer 21 causes prescribed assigned musical sound producing channels to produce musical sounds through an amplifier 28 and loudspeaker by controlling a musical sound production circuit 27 having 16 pieces of musical sound producing channels. |
