上海大学学报(自然科学版) ›› 2009, Vol. 15 ›› Issue (5): 441-444.

• 通信与信息工程 •    下一篇

基于韵律信息的语种辨识系统

  

  1. 上海大学 通信与信息工程学院,上海 200072
  • 收稿日期:2008-06-25 出版日期:2009-10-30 发布日期:2009-10-30
  • 通讯作者: 侯丽敏(1962~),女,副教授,博士,研究方向为语音信号处理. E-mail:lmhou@staff.shu.edu.cn
  • 基金资助:

    上海市教委重点学科建设资助项目(J50104);上海市教委基金资助项目(06AZ033)

Prosodic Information Used in Language Identification

  1. School of Communication and Information Engineering, Shanghai University, Shanghai 200072, China
  • Received:2008-06-25 Online:2009-10-30 Published:2009-10-30

摘要:

提出利用超声层次上的韵律信息来进行语种辨识.在子词分割的基础上结合元音/辅音检测模型,将语音分割为CnV的假音节模型,然后对每个假音节提取一个五维的特征韵律参数.分割结果比传统的分割方法更接近实际的音节结构.在韵律系统中,对所有的语言建立高斯混合模型(GMM),研究模型的离散度和模型间的干扰程度.实验表明,韵律模型对不同的语言、不同的语系和同一语系中不同语言均具有一定的区分效果.

关键词: 语种辨识;韵律;高斯混合模型

Abstract:

This paper deals with automatic language identification based on prosodic features and rhythmic information. A segmentation method has been used to divide the speech signal into sub-word units, and with vowel/consonantal detection, segment the speech into vowel units and consonantal units. Pseudo-syllable units are then produced. Several parameters are extracted and modeled from pseudo-syllable and modeled with a Gaussian mixture model (GMM). Experiments are performed on free and telephone channel speech. The results show that the sub-word system and the rhythmic system are effective.

Key words: language identification;rhythm;Gaussian mixture model (GMM)

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