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 |
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作 者 | 吳宗憲; 陳有圳; 顏國郎; | 書刊名 | Proceedings of the National Science Council : Part A, Physical Science and Engineering |
卷 期 | 23:4 1999.07[民88.07] |
頁 次 | 頁488-494 |
分類號 | 312.23 |
關鍵詞 | 音韻訊息; 詞彙驗證; Mandarin speech; Prosodic information; Word verification; False alarm; False rejection; |
語 文 | 英文(English) |
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. |
本系統中英文摘要資訊取自各篇刊載內容。