| 摘要 |
In an electronic musical instrument having a greater number of selectively actuable switches (10) than note generators (14) to cause the production of sounds corresponding to the respective notes of a musical scale, the present invention interpolates between the harmonic structures of a waveform stored in memory during portions of or during the entire transient periods of said waveform. This is accomplished through the use of memory units (A, B) having a number of locations or zones within each memory where the number of zones is equivalent to the number of discrete harmonic structures. The first of the memory units (A) contains a discrete fixed harmonic structure in each of its zones, and a second of the memory units (B) contains a difference value in each of its zones where the difference value is equal to the difference between the discrete fixed harmonic structure in adjacent zones of the first memory. The length of time of the interpolation between harmonic structures is specifically controlled and may occur as either a linear or non-linear sequence occupying either the entire transient period or a shortened portion thereof. |
