| 摘要 |
PROBLEM TO BE SOLVED: To provide an acoustic signal analysis device and an acoustic signal analysis program in which the accuracy of estimating a beat point, code progress, and the position of a measure line. ! SOLUTION: An acoustic signal of a music is taken in, and a first beat point candidate series OR1 and a second beat point candidate series OR2 out of beat by half with the first beat point candidate series OR1 are detected. Next, a first beat synchronous type code feature amount series CR1 and a second beat synchronous type code feature amount series CR2 representing the feature of code between two adjacent beat point candidates of the first beat point candidate series and second beat point candidate series are calculated. From among probability models representing the code progress of the music, probability models in which the first beat synchronous type code feature amount series CR1 and the second beat synchronous type code feature amount series CR2 satisfy a prescribed standard are selected one f |
