MUSICAL PIECE ANALYZING METHOD AND MUSICAL PIECE ANALYZING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a musical piece analyzing device which inputs sound data and decides the tonality of the whole music and a likelihood of a major key or minor key without extracting individual pitch.;SOLUTION: The musical piece analyzing device comprises a frequency analyzing means of taking a frequency analysis of data of one piece of music, a power spectrum shape acquiring means of finding the shape of a power spectrum from power of music of each analyzed frequency, a tonality detecting means of extracting the kind and tonic of tonality in use from shapes of the power spectrum, and major key/minor key decision means of finding the likelihood of the major key or minor key of the musical piece from the detected tonality kind and its tonic.;COPYRIGHT: (C)2007,JPO&INPIT