Tone And Rhythm Studies Double Helix Model Between Nodes

The thesis aims to address the issue whether correspondence exists between lexicaltones and melody in songs sung in Putonghua and focuses on the reasons for themisunderstanding of lyrics led by the mismatch between tones and melody. Based onthe non-linear structure of Chinese, several rules for the tone-tune mappings areconcluded by analyzing how fundamental frequency (F0) is used to signal lexical tonesthat occur in songs, with the help of software Praat. The perceptual experiment showsthat the level tone and falling-rising tones can be signaled by a single musical note, yetrising and falling tones can’t be perceived by that without context. It proves that thefinal perceptual results depend on both melody contour and contrastive height ofmusical notes. The conflict between the pitch contour shown in sound diagram and theactual perceptual results is explained as categorical perception. The reasons for theunderstanding of changed tones are concluded as three types: New Prototype Filed,New Prototype Missed, and New Prototype Displaced. This paper gives a newdefinition of Mismatch (Daozi) and abstracts a new model Double-helical Structureto illustrate the relationship between lyrics and melody in songs. The model ensures themusicality of melody while preserving adequate identifiability of lexical tones in thelyric. The experimental results are verified by testing songs.