PURPOSE:To enable performance in an invariably normal state by correcting the operation data of a performance operation element corresponding to musical sound parameters according to sound generation range characteristics corresponding to the musical instrument and then inputting the corrected data to a sound source circuit. CONSTITUTION:The position information based upon the operation of the performance operation element 1 is converted through an A/D converter 2 and an arithmetic circuit 3 for speed conversion into speed data iv, which is inputted to a correcting circuit 4. Further, pressure information from the pressure sensing means of the operation element 1 is inputted as pressure data ip to the circuit 4. The circuit 4 corrects the data iv and ip at the start of 1st sound generation so that the data enter a sound generation area where a sound begins to be generated, and then inputs the corrected data as bow speed data vv and bow pressure data vp on a violin, etc., to the sound source 6. Further, the pitch information (p) corresponding to a scale is inputted to the sound source 6 through operation on a keyboard 5 and the sound source 6 generates an electronic sound according to those respective data, so that the sound is outputted through a sound system 7.
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