| 摘要 |
PROBLEM TO BE SOLVED: To generate new music sound by controlling various kinds of music sound elements such as the tone, pitch, volume or sound images of music sound in an electronic musical instrument or the like. SOLUTION: A support rod 23 is erected in a frame 5 inside the electronic musical instrument and a disk shape planar body 22 made of a metallic sheet is fixed in its center in the base part 23a of the support rod 23. A dome shape operation knob 21 is held in a supported state by the rod 23 through the use of a boss part 21a and a holding part 21b and the knob 21 is made to be rocking possible in an optional direction at the side of an outer periphery. Distortion gauges 26 such as a piezo-element or a pressure sensitive resistance element are fixed to four placed in the circumference of the lower surface of the planar body 22. A plurality of tooth shape projecting pieces 21c in the lower end peripheral edge part of the knob 21 are abutted on the outer periphery of the body 22 to give a deformation to the body 22 and the music sound elements such as the tone, the pitch or the sound image localization are controlled by the output of the gauges 26. |
