| 摘要 |
PROBLEM TO BE SOLVED: To diversely vary vibrato by adding vibrato to a musical sound, processing the vibrato through more than one filter, and switching and selecting or putting together results. SOLUTION: A selector 52 selects 1st composite vibrato data SSW from a vibrato data memory or random number information from a random number generator 50, the selected data or information is filtered through digital filters 51A, 51B... or not passed through them and weighted and put together by multipliers 54A, 54B... and an adder 58, and a selector 57 makes a choice. The composite vibrato data SSW is added to frequency number data, musical sound waveform data, or envelope waveform data EN, so that the vibrato is added. The composition rate diversely varies with the values of weighted data WT5... to which the vibrato is added and the selector 52 switches the selected filters 51A.... |
