https://scholars.lib.ntu.edu.tw/handle/123456789/299173
標題: | Distributed Chinese Keyword Spotting and Verification for Spoken Dialogues under Wireless Environment | 作者: | Yun-Tien Lee Cheng-Huang Wu Yumin Lee LIN-SHAN LEE |
公開日期: | 九月-2002 | 起(迄)頁: | 825-828 | 來源出版物: | 7th International Conference on Spoken Language Processing, ICSLP 2002 | 會議論文: | 7th International Conference on Spoken Language Processing, ICSLP 2002 | 摘要: | With the rapid developments of wireless communications, it is highly desired for users to access the network information with spoken dialogue interface via hand-held devices at any time, from anywhere. One possible approach towards this goal is to perform speech feature extraction at the hand-held devices (the clients) and have all other recognition tasks and dialogue functions absorbed by the server. This paper investigated distributed Chinese keyword spotting and verification under this scenario. A "phonetically distributed" Mandarin speech database including all possible Mandarin syllables and context relationships with frequencies roughly proportional to those occurring in daily Mandarin conversation is used to train a best set of vector quantization codebooks, such that the syllable recognition accuracy degradation due to quantization errors is minimized. Enhanced Chinese keyword spotting techniques were then developed using utterance verification approaches with weighting parameters optimized by MCE training. Experimental results indicated that the keyword verification approach achieved significant improvements in keyword spotting performance, and the overall results integrating vector quantization, keyword spotting and verification is quite satisfactory. |
URI: | http://scholars.lib.ntu.edu.tw/handle/123456789/299173 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85009241650&partnerID=40&md5=148eecb66c6a20877e6e3e12888eb600 |
SDG/關鍵字: | Feature extraction; Hand held computers; Vector quantization; Wireless telecommunication systems; Chinese keywords; Mandarin syllable; Network information; Quantization errors; Syllable recognition; Utterance verification; Wireless communications; Wireless environment; Speech recognition |
顯示於: | 資訊工程學系 |
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