Durational Characteristics and Pitch Characteristics of the Prosodic Phrase in Mandarin Chinese

It is the key to improve the natural degree of speech synthesis and reduce the error rate of speech recognition that analyzes the information structure and prosodic structure of sentence and chapters. Based on large speech corpus (ASCCD) with prosodic structure label, we measured the characteristics of duration and pitch on prosodic phrase. The statistical results on duration and pitch are presented in this paper.(1)The prosodic border can obviously prolong the duration of syllable, different tone and accent have different effect to prolong the syllable duration.(2)The break duration at prosodic border, especially at little prosodic border is more obvious. It is obvious that F0 reset always occurs between prosodic phrases. The F0 bottom line is always declined. The F0 top line is declined after the accent. And at accent position, the rage of pitch is big and the top line is high.