ACOUSTIC SIGNAL ANALYSIS DEVICE, ACOUSTIC SIGNAL ANALYSIS METHOD AND ACOUSTIC SIGNAL ANALYSIS PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a technique to solve the problem of conventional arts which do not accurately detect characteristics of music.;SOLUTION: The acoustic signal analysis device 1 includes: an acquisition part 12 for acquiring an acoustic signal 2; a first feature quantity-calculating part 13 for calculating a first value of each sound volume of a plurality of sections including a first section of the acoustic signal 2; a second feature quantity-calculating part 14 for calculating a second value regarding each sound volume in a plurality of sections including a second section which is longer than the first section of the acoustic signal 2; an evaluation value-calculating part 15 for calculating an evaluation value of time sequence by using the first value and the second value, which becomes larger, as the first value is larger, and as a second value corresponding to the first value in time is larger; and a feature position-detecting part 16 for detecting a section where the evaluation value calculated by the evaluation value-calculating part 15 becomes a maximum, or a local maximum.;COPYRIGHT: (C)2011,JPO&INPIT