Utterance verification using prosodic information for Mandarin telephone speech keyword spotting

Yeou Jiunn Chen, Chung-Hsien Wu, Gwo Lang Yan

研究成果: Conference article同行評審

7 引文 斯高帕斯(Scopus)

摘要

In this paper, the prosodic information, a very special and important feature in Mandarin speech, is used for Mandarin telephone speech utterance verification. A two-stage strategy, with recognition followed by verification, is adopted. For keyword recognition, 59 context-independent subsyllables, i.e., 22 INITIAL's and 37 FINAL's in Mandarin speech, and one background/silence model, are used as the basic recognition units. For utterance verification, 12 anti-subsyllable HMM's, 175 context-dependent prosodic HMM's, and five anti-prosodic HMM's, are constructed. A keyword verification function combining phonetic-phase and prosodic-phase verification is investigated. Using a test set of 2400 conversational speech utterances from 20 speakers (12 males and 8 females), at 8.5% false rejection, the proposed verification method resulted in 17.8% false alarm rate. Furthermore, this method was able to correctly reject 90.4% of nonkeywords. Comparison with a baseline system without prosodic-phase verification shows that the prosodic information can benefit the verification performance.

原文English
頁(從 - 到)697-700
頁數4
期刊ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
2
出版狀態Published - 1999 1月 1
事件Proceedings of the 1999 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP-99) - Phoenix, AZ, USA
持續時間: 1999 3月 151999 3月 19

All Science Journal Classification (ASJC) codes

  • 軟體
  • 訊號處理
  • 電氣與電子工程

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