Abstract
It is still in the way to make music generation system which reflects human sensitivity in various research organizations. Among systems which are studied, there are typical systems such as the system which composite music from the impression of words and the system which utilize Genetic Algorithm. The purposes of this study are to compose several music, to cope with the sensitivity of each individual by visualizing the relationship between human sensitivity and musical structure, quantify the whole musical structure which decides the impression of music and to realize the construction of the automatic musical creation system which reflects individual sensitivity by the method of modeling the relationship of this structure and each individual sensitivity by Neural Network. First of all, a whole musical structure to decide its impression shall be quantified as musical structure element such as key, harmony, melody, and pitch as well as rhythm and tempo based on the idea, “Music is composed of three elements such as rhythm, melody, and harmony”. Then, the relationship between music and impression felt from the music shall be replaced by the followings: the relationship between musical structure element quantified music and impression words quantified impression by SD method. Therefore, the relationship between music and its impression from music shall be learned. Secondly, the relationship between music acquired through learning and its impression shall be used to acquire musical structure element of impression levels to enter by Genetic Algorithm. This regards musical structure element as the individual of genetic algorithm. Therefore, this regards musical structure element as entries of learned Neural Network to output the value of musical impression of input music. To learn the difference between the value of musical impression obtained here and the value of musical impression to compose as assessment function automatically generates music of its impression.
