基于韵律模型的普通话基频分析

基频是基于模型的语音合成系统中重要的一个因素，该文主要利用韵律信息仿真普通话基频曲线特征值，并分析音节基频各个特征值在韵律环境下的稳定性。该文将前一音节的终止基频值与韵律参数结合，通过数据挖掘技术寻找影响各个特征值的重要韵律参数，并用这个结果建立韵律模型，然后仿真基频曲线特征值，并得到了一个良好的结果。通过分析发现在连续语流中，体现频率特性的特征值中，基频均值和最小值的稳定性较强；体现时间特性的特征值中，音节时长的稳定性较强。

Analysis of F0 Contours in Mandarin Based on Prosodic Model

F0 contour is an important factor in model - based text - to - speech system. This paper simulates the characters of F0 contours in continuous speech of mandarin with prosodic information and analyzes the reliability of several characters of syllabic F0 contour. This paper looks out the important prosodic parameters from a set of prosodic parameters combined with the end pitch value of previous syllable by using the method of data mining technology. According to the result, prosodic models are set up to simulate the characters of F0 contours and a good performance is yielded at last. Through analysis, it is found that the average and minimum value of syllabic F0 contours are relatively reliable among the characters about frequency , and the duration of syllabic F0 contours is relatively reliable among the characters about time.