Abstract: A musical tone signal generating apparatus having a plurality of voice units connected to a common data bus to which a master central processing unit or master CPU, a program read-only memory or program ROM and a random access memory or RAM are connected, wherein a control program and a control data for synthesis of plural element musical tone signals are applied to the voice units from the common data bus through a bus controller under control of the master CPU, wherein the voice units each include a slave central processing unit or slave CPU, a slave random access memory or slave RAM, a digital signal processor or DSP and a random access memory or RAM for the DSP for executing the control program for synthesis of the element musical tone signals defined by the control data.

Abstract: The electronic musical instrument, which is suitable for generating sustaining tone of a rubbed string instrument, has a manipulator for achieving performance manipulation in a linear manipulation region or in a plane manipulation region to simulate the motion of a bow of the rubbed string instrument, and a processing circuit for applying smoothing treatment to signals given by the manipulator. The musical tone generated by the electronic musical instrument can be prevented from being contaminated with discordant sound caused by noise produced in performance manipulation.