| 摘要 |
PURPOSE:To provide the keyboard musical instrument which sounds more chords having no auditory cacophony and enables diverse musical performances. CONSTITUTION:When a 19 temperament scale is selected with a changeover switch SW, a frequency number F2 is outputted from a frequency number memory 15 storing frequency numbers F2 as many as the product of 19 and the number of octaves by key codes KC corresponding to pressed keys. At this time, the frequency ratio of musical sounds generated with a key KEYm (1<=m<=19) and a key KEYm+1 is 19sq. rt. 2. When a 12 temperament scale is selected with the changeover switch SW, a frequency number F1 is outputted from a frequency number memory 14 storing frequency numbers F1 as many as the product of 12 and the number of octaves by key codes KC corresponding to the depressed keys. At this time, each musical sound generated by operating an adjacent key KEYi has a frequency ratio of 12sq. rt. 2. |
