Summary
2011 International Symposium on Nonlinear Theory and Its Applications
2011
Session Number:A1L-C
Session:
Number:A1L-C1
Automatic Composition System based on Genetic Algorithm and N-gram Model Considering Chord Progression
Naoki SUGIYAMA, Masanobu YOSHIDA, Katsuya ASANUMA, Yuko OSANA,
pp.40-43
Publication Date:2011/9/4
Online ISSN:2188-5079
Summary:
In this paper, we propose an automatic composition system based on genetic algorithm and N-gram model considering chord progression. In the proposed system, the tone and the length of sounds are expressed in a form of gene, and some melodies are generated by genetic algorithm. In this system, the fitness of the gene is calculated based on (a) transition of rhythm, (b) transition of tone, (c) transition of tone and length, (d) transition of the number of sounds per bar, (e) transition of chord progression, (f) similarity of rhythms between bars, (g) rate of unique sounds of scales and (h) difference between two sounds. We carried out a series of computer experiments and confirmed the e?ectiveness of the proposed system.