| 摘要 |
<p>In an electronic musical instrument in which musical sound waves are produced in response to progressive counting of an electronic counting circuit, a period setting circuit for setting a period of the counting circuit in response to depression of a performance key representing a note establishes coarse and fine period control values, coarse period control being performed through advanced or delayed counting at a plurality of counting states of the period setting circuit, and fine period control being performed, at selected counting states of said counting circuit as controlled by the coarse values, by using the fine value.</p> |
