The Theory And Method Of Chinese Dialect Identification

Chinese Dialect Identification is a technique that the computer can distinguish automatically the category of the dialect of the voice fragments of Chinese dialect pronounced by the speaker, and according to this, we can identify the geographical origin. In the Speech Project, Public Safety, Language Study and other fields, the technology is of great value. This is a comprehensive interdisciplinary research, the convergence of relevant contents of linguistics, psychology, mathematics, computer technology, pattern recognition and voice signal processing, and many other subjects.In the field of speech project, the research on Chinese Dialect Identification is mainly based on Speech Generation Model, and to design and accomplish the system according to the method of probability and statistic, but there are still some deficiencies and problems in the object of research, method and function, etc. Chinese Dialect Identification based on language can better overcome these shortcomings because it is based on the language study of the Chinese dialects and makes the mode of perception and the rule of language an important basis for identification dialect.The research core of Chinese Dialect Identification based on language is to establish a mathematics model for Chinese dialect which can show its quality of linguistics, and the research difficulty is how to choose the phonology feature for dialect identification and how to accomplish the unification of the physical category, linguistic category and psychological category of the phonology feature.Through deep analysis on relevant language theory problems related to Chinese Dialect Identification, especially the voice systematic, structural characteristics of Chinese dialect, we put forward a mathematics model of Chinese dialect based on the phonology feature of"sound kind-sound value"for the first time. And on the basis of it we proposed a"sound kind-sound value-distinction feature"model for the Chinese Dialect phonology features.These models build the theoretical foundation for the Chinese Dialect Identification System.About the relevant problems of phonology feature of dialect, we put forward the biggest distinctive differences must be included in sound characteristics of dialect by analyzing the cognitive model of Chinese Dialect Identification and discussing the distinctive characteristics. We overcome the inconsistency between the acoustics character and apperception by the distinctive differences.At the same time, about different types of sound characteristics of dialect, we put forward value-seeking strategies and comparison of strategies to deal with dialect characteristics for dialect identification system, and we can get the distinctive feature of sound characteristics of dialect by the method of distinctive characteristics detector and comparative frequency.Based on this, we put forward a basic framework of Chinese Dialect Identification system. The system identifies dialects according to the phonology features of quality of linguistics. In the Chinese Dialect Identification system, these phonology features of dialect work according to a certain order and sequence, and so we can get the category of the dialect step by step. At the same time, according to the geographical features of the distribution of sound characteristics of dialect, we identify their respective dialects in administrative region of the county level about the dialect features. If the dialect phonology features were mixed, we use the core features and common features to know the dialect geographical attribution.Based on the above models and framework, through field research, we collect, record and make phonology databases and phonetic databases of more than 20 kinds of voice and voice-file database of Huang-xiao Dialects. We use Huang-xiao Dialects as the key materials to study the theory of Chinese Dialect Identification. Through a comprehensive, systematic analysis and research on voices of Huang-xiao Dialects, we extract more than 30 groups of voice features, and study these voice characteristics of the nature, source and the function and role in Chinese Dialect Identification one by one. In addition, we sum up more than 10 distinctive features from the voice features, and point out the acoustic counterparts and specific treatment of the distinctive features through experiments and voice analysis.In seeing about the phonology features of Huang-xiao Dialects, we put the phonology features under the background of Chinese dialects and see about the distributing and typological significance of the phonology features in Chinese dialects. About the detailed problems of phonology features of Huang-xiao Dialects, we make a comprehensive and detailed study through many methods. For example, we see about thoroughly the sound quality, phonology characteristic and distribution rule of ? finals system in? Huang-xiao Dialects, and put forward the opinion of ?? origins? from?^*u(<^*iu<^*iu). In addition, we analyze deeply the problems about ru-sheng finals, Tense/lax vowel and nasal finals in Huang-xiao Dialects through the method of acoustic sound experiment. At the same time, we analyze thoroughly the origin, quality and ascription from the aspects of evolution of districts, the history of emigration and so on. Then we divide the Huang-xiao Dialects into three scraps according to the characteristics such as merger of quan-zhuo ru-sheng.Theoretically, through Chinese Dialect Identification system based on language and the whole scheme advanced in this article, we can better accomplish the dialect identification of non-continuous sound, specific words, and determining the relation of dialects. However, the construction of Chinese Dialects Identification System is a complex systematic project. At present, due to various conditions of the restrictions, Chinese Dialect Identification system can not come true, and it still depends on further study of the experts in various fields.