MUSICAL SECTION DETECTION METHOD, MUSICAL SECTION DETECTOR, MUSICAL SECTION DETECTION PROGRAM AND STORAGE MEDIUM

摘要

PROBLEM TO BE SOLVED: To accurately detect a musical section from a sound signal even for music including a part having no harmonic structure, or music is superimposed with voice or background sound at a high volume.;SOLUTION: A sound characteristic extraction means 2 calculates a sound characteristic vector string for each short-time frame from an input sound signal. A musical frame evaluation value calculation means 3 calculates, for each frame, a frame musical information evaluation value showing whether music is contained therein or not from the frame sound characteristic vector string. A musical segment evaluation value calculation means 4 calculates, for each segment having a long time, compared with each short-time frame, a segment musical information evaluation value showing whether music is contained therein or not from the frame musical information evaluation value. A start/end time determination means 5 determines music start/end times from the segment musical information evaluation value and outputs a list.;COPYRIGHT: (C)2009,JPO&INPIT