| 摘要 |
<P>PROBLEM TO BE SOLVED: To identify melody lines of various components included in a target piece of music. <P>SOLUTION: A distribution image in which the strength distribution of frequency components of a target piece of music is plotted along the time axis is analyzed by image processing techniques of binarizing, thinning and grouping to generate melody data representing transitions of predetermined melodies of the target piece of music as melody lines (s130 to s190). The melody lines represented by the melody data are each transitions of frequency components along the time axis grouped irrespective of the type of components. The melody lines of components included in the target piece of music, such as a main voice component (vocal), a sub voice component (chorus) and other components can thus be easily identified irrespective of the type of components. <P>COPYRIGHT: (C)2010,JPO&INPIT |
