TD-PSOLA技术在汉语语音波形编码合成中的应用

The Application of TD PSOLA Technology in Chinese Speech Waveform Coding Synthesis

以时域基音同步叠加（ＰＳＯＬＡ）技术和一个全汉语单音节库为合成单元进行汉语语音波形编码合成．针对汉语语音的音高、时长、音强以及音节之间的协同发音效应等影响合成语音质量的主要因素，建立相应音节的声调曲线、时长规则和音节之间协同发音规则等韵律规则，并利用时域基音同步叠加法原理调整合成语音的音高和时长。

Chinese speech waveform coding synthesis is based on the time domain pitch synchronous overlap add(PSOLA)method and a Chinese syllable dictionary. Chinese speech pitch, syllable duration, energy and interaction between syllables are main factors which affect Chinese speech synthesis. This synthesis system builds up a set of prosodic rules, which include tone curve, durational rules, interaction between syllables , and can adjust synthetic speech pitch and duration with the time domain PSOLA .Then synthetic speech presents intelligibility and naturalness.