基于声学特征的阳声韵元音鼻化程度的计算研究  

An Acoustic Study of Nasalized Vowel in Nasal Coda Syllables

作　　者：孙锐欣[1] 

机构地区：[1]华东师范大学中文系,上海200241

出　　处：《中文信息学报》2015年第1期49-56,共8页Journal of Chinese Information Processing

基　　金：教育部人文社会科学研究项目(12YJC740089)

摘　　要：在以鼻音为韵尾的音节中,元音可能会受韵尾的鼻音影响而带上鼻化音色,该文在对阳声韵韵母声学特征物理分析的基础上提出了阳声韵元音鼻化程度的计算方法。利用元音鼻化段时长和鼻化元音共振峰带宽构建的一个三维向量作为描述鼻化元音的依据,把这个向量的模作为元音鼻化程度的标度。经过实验和计算,我们发现前鼻音韵母中的元音的鼻化程度比较低,标度均值0.410,而后鼻音韵母中的元音的鼻化程度比较高,标度均值0.718,在所有阳声韵中,韵腹是高元音的阳声韵元音鼻化程度最高的。The vowel in a nasal coda syllable will become a nasalized one. The issue is how to measure the degree of being nasalized. This paper puts forward a method based on the bandwidth of formants and the duration of nasalized part of the vowel after a deep acoustic analysis of the speech sound. We find that the nasalized degrees of vowels in alveolar nasal syllables are less than that of vowels in velar nasal syllables. The degree of the former is 0. 410 and the latter is 0. 718. The top degree lies in the high vowels, which are easy to be nasalized.

关 键 词：阳声韵结构 鼻化元音 共振峰带宽 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]