标题: ENRICHING MANDARIN SPEECH RECOGNITION BY INCORPORATING A HIERARCHICAL PROSODY MODEL
作者: Yang, Jyh-Her
Liu, Ming-Chieh
Chang, Hao-Hsiang
Chiang, Chen-Yu
Wang, Yih-Ru
Chen, Sin-Horng
電信工程研究所
Institute of Communications Engineering
关键字: Hierarchical prosody model;Mandarin speech recognition
公开日期: 2011
摘要: This paper presents a new probabilistic framework of Mandarin speech recognition by incorporating a sophisticated hierarchical prosody model into the conventional HMM-based system. The prosody model describes the relations of linguistic cues of various levels, break types and prosodic states which represent the prosody hierarchical structure, and prosody-related acoustic features. Aside from producing the recognized word sequences, the system also decodes other information including word's part-of-speech, punctuation marks, inter-syllable break types, and prosodic states of syllables. Experimental results on the TCC300 corpus, which consists of paragraphic utterances, showed that the proposed system significantly outperformed the baseline system. The word and character error rates decreased from 24.4% and 18.1% to 20.7% and 14.4% (or 15.2% and 20.4% relative improvements), respectively.
URI: http://hdl.handle.net/11536/14862
ISBN: 978-1-4577-0539-7
ISSN: 1520-6149
期刊: 2011 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING
起始页: 5052
结束页: 5055
显示于类别:Conferences Paper