APSIPA Annual Summit and Conference 2010, December 14-17, 2010, Biopolis, Singapore."In this study, in order to automatically generate thumbnail music that has a main part of the original tune, we propose a new estimation method of structure changes in stereo tunes based on localization information. The proposed method can estimate the main parts of the music tune by analyzing specific timing when localization information changes under the assumption that the changing time of the localization approximately corresponds to timing of the music structure change. We evaluate the effectiveness of the proposed method by the objective assessment in this paper. The experimental result shows that the proposed method can detect correct timing of music structure changes with more than 70 percent accuracy rate.
