Optimization of intonation control using statistical F0 resetting characteristics

F₀ resetting characteristics were analyzed statistically in relation to local phrase dependency structure. Analyses showed that the parameters reflecting the local phrase structure and coordinate phrase relation could explain F₀ resetting characteristics quantitatively. An F₀ prediction experiment was carried out using four models corresponding to four different types of local structure. The F₀ prediction results showed that the total prediction error was reduced 20% (about 0.5 semitone) by the differentiation of local phrase structure and the distinction between coordinate and noncoordinate phrase boundaries