| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an automatic accompaniment system realizing irregular time of an automatic accompaniment through easy operation. <P>SOLUTION: This system is provided with irregular time switches Ms such as a duple time switch and a triple time switch to indicate change to specified time such as duple time and triple time. When the irregular time switch MS is operated during an automatic accompaniment performance, the measure of the automatic accompaniment at the point of time is forcibly played with the specified time that the irregular time switch MS instructs. For example, when an operation Ac1 of the triple time switch MSb is done at some points t1 to t2 of time during the automatic accompaniment, the (n)th measure including the points t1 to t2 of time is changed to triple time (Fig. (2)). When an operation Ac2 of the irregular time switch MS is done continuously for a plurality of measures of the automatic accompaniment, the plurality of measures are all regarded as irregular time measures and, for example, when the triple time switch MSb is operated at points t3 to t4 of time in (n)th to (n+1)th measures, those (n)th to (n+1)th measures are plated in triple time (Fig. (3)). <P>COPYRIGHT: (C)2006,JPO&NCIPI |
