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1. (WO2017168694) MUSIC STRUCTURE ANALYZING DEVICE, MUSIC STRUCTURE ANALYZING METHOD, AND MUSIC STRUCTURE ANALYZING PROGRAM

Pub. No.:    WO/2017/168694    International Application No.:    PCT/JP2016/060735
Publication Date: Fri Oct 06 01:59:59 CEST 2017 International Filing Date: Fri Apr 01 01:59:59 CEST 2016
IPC: G10L 25/51
G10G 3/04
G10L 25/18
Applicants: PIONEER DJ CORPORATION
Pioneer DJ株式会社
Inventors: SABI Toshihisa
佐飛 利尚
SUZUKI Shiro
鈴木 四郎
Title: MUSIC STRUCTURE ANALYZING DEVICE, MUSIC STRUCTURE ANALYZING METHOD, AND MUSIC STRUCTURE ANALYZING PROGRAM
Abstract:
A music structure analyzing device (4) that assigns a feature section for characterizing the structure of music data (M1) to the music data, comprising: a sound analyzing means (11) for analyzing the number of sounds in each measure of the music data (M1) that have different frequencies; a ratio calculation means (12) for calculating, on the basis of the analysis results from the sound analyzing means (11) and using the measure having the maximum number of sounds as a reference, the ratio of the number of sounds in other measures among the analyzed sounds; a development point establishment means (13) for establishing a time point when the variation expressed in the ratio calculated by the ratio calculation means (12) exceeds a prescribed threshold as a development point of the feature section in the music data (M1); and a feature section assignment means (14) for assigning the feature section on the basis of the development point established by the development point establishment means (13).