句末“阳平＋去声”词语重读时的音高变化

韵律处理是语言合成技术的重要部分，了解韵律特征及建立韵律模型是提高合成语言自然度的前提。实验利用Praat软件，在分析了32组语音实验材料，建立音高数据库的基础上，研究句末“阳平＋去声”词语重读时的音高变化，初步得出重读时高音点的音高会有明显提高，且变化幅度大于低音点，阳平声调低音点的音高会有所下降的结论。

The Impact of Stress on the Pitch of the Words with ＂the Rising tone＂ and ＂the Falling Tone＂ at the End of a Sentence

Prosody processing is an important part of the speech synthesis technology. Understanding the prosodic features and building the prosodic model are the prerequisites for improving the naturalness of speech synthesis. Based on the variances of pitch of pronunciation through a set of experiments, and the analysis of three basic models of stressed and unstressed words with ＂the rising tone＂ and ＂the falling tone＂ at the end of a sentence and the variances of pitch of those models, we can conclude that ＂the rising tone＂ will rise in stressed words with higher amplitude of variantion than ＂the falling tone＂, and the ＂the falling tone＂ will decrease.