| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a music reproducing device applicable to an on-vehicle device having limited resources etc., by obtaining the tempo of a music through a light processing. <P>SOLUTION: A tempo acquisition device 7 executes a step of acquiring beats of the music from PCM data of the music and a step of calculating the tempo of the music from intervals between obtained beats, wherein the step of calculating the tempo is characterized in that average values and variance values of beat intervals are obtained at preset time intervals and the obtained variance values are compared to calculate the tempo based upon the average value of a beat interval where the smallest variance is obtained. <P>COPYRIGHT: (C)2009,JPO&INPIT |
