頁籤選單縮合
題名 | Use of Prosodic Information for Mandarin Word Verification=應用音韻訊息於詞彙驗證 |
---|---|
作者 | 吳宗憲; 陳有圳; 顏國郎; Wu, Chung-hsien; Chen, Yeou-jiunn; Yan, Gwo-lang; |
期刊 | Proceedings of the National Science Council : Part A, Physical Science and Engineering |
出版日期 | 19990700 |
卷期 | 23:4 1999.07[民88.07] |
頁次 | 頁488-494 |
分類號 | 312.23 |
語文 | eng |
關鍵詞 | 音韻訊息; 詞彙驗證; Mandarin speech; Prosodic information; Word verification; False alarm; False rejection; |
英文摘要 | In this paper, prosodic information, a very special and important feature of Mandarin speech, is used for Mandarin word verification. A two-stage strategy, with recognition followed by verification, is adopted in word recognition of telephone speech. For word recognition, 94 right context-dependent INITIALs, 37 context-independent FINALs in Mandarin speech and one silence model are used as the basic recognition units. For word verification, 15 anti-subsyllable Hidden Markov Models (HMMs), 175 context-dependent prosodic HMM's, and five anti-prosodic HMM's, are constructed. A word verification function combining phonemic-phase and prosodic-phase verification is investigated. Using a test set of 2200 word utterances from 22 speakers (14 males and 8 females), at 1.9% false rejection, the proposed verification method obtained a 9.0% false alarm rate. Comparison with a baseline system without prosodic-phase verification shows that, using prosodic information, the proposed system yields a false alarm rate reduction of 22.5% and a false rejection rate reduction of 20.8%, respectively. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。