| 摘要 |
<p>An automatic accompaniment apparatus stores a plurality of chord variety progression patterns (Figs. 9A, 9B, 9C) corresponding to the respective types of chords. Each chord variety progression pattern is constituted by a subprogression of plural chords provided for the corresponding chord type. When a player designates chords in progression to be used for an automatic accompaniment performance, the chord type of each designated chord is detected, and each single chord will be substituted by a chord variety progression pattern for the chord type which is the same as such a designated single chord, under the condition that the chord variety progression function is made operative for such a designated chord and that such a designated chord is of a type for which a chord variety progression pattern is provided correspondingly. As the player performs a chord progression (Fig. 10A) of a slower change, the apparatus realizes a modified complex chord progression (Fig. 10F) with a faster chord change to enhance the variousness in chord progressions. The chord variety progression pattern may further include on/off control data for the accompaniment pattern and wavy control data for performance volume variation (Figs. 12A, 12B, 12C), thereby adding further variety in accompaniment performance. <IMAGE></p> |
