该文根据语音合成与识别等语音应用研究的需求,从文本分析模块入手,利用“维吾尔语语音声学参数库”,选择了带高元音/i/,/u/和/ü/的多音节词(双音节、三音节词),分别对其发生清化和保持原来浊特性时的三种高元音的时长,音高和音强进行了统计分析,归纳了其发生清化时的时长、共振峰和音强在开音节和闭音节中的分布模式,从实验语音学的角度出发,进一步探讨了维吾尔语中三个高元音的清化特性,并验证了语言学者凭听力和生理而总结出来的结论与声学上的结论的一致性。其目的是为了提高语音合成的自然度即更好的为自然语言处理服务。该项研究对维吾尔语语言乃至整个阿尔泰语系语言的韵律研究具有较高的参考价值。

This paper presents the first systematic empirical work on vowel devoicing in Uyghur based on the text analysis module, with the purpose of enhancinh the naturalness of Uyghur speech synthesis and speech recognition system. The experimental analysis is based on an acoustical database which contains phonetic measurements of 460 words with the vowel /i/, 280 words with the vowel /u/ and 150 words with the vowel /ü/. The major part of the investigation is concentrated on an acoustical analysis of the duration, pitch and intensity features of the vowels /i/, /u/ and /ü/ in Uyghur when they become voiceless as well as when they keep their original voiced features. We deem that the study has a high research value for both the study of Uyghur language itself and the study of entire Altaic language family.
Key wordsnatural language processing; Uyghur language; speech; vowel; devoicing