Melody Morphing Method Based on GTTM
Masatoshi Hamanaka, Keiji Hirata, Satoshi Tojo · University of Michigan Library Repository · 2008
This paper describes a melody morphing method that generates an intermediate melody between a melody and another melody with a systematic order according to a certain numerical measure.Conventional music sequence software only operates on the surface structure of music, such as its notes and rests.The time-span tree, which is acquired from the music surface by using a music theory called GTTM (Generative Theory of Tonal Music), enables us to analyze the deeper structure.Our method makes it possible for one melody to be morphed into another melody by using a melody divisional reduction that applies meet and join operations to the GTTM timespan trees.Experimental results show that our morphing method makes it possible to generate intermediate melodies between two melodies.