The Journal of the Acoustical Society of Korea

한국음향학회 (The Acoustical Society of Korea)
권호 표지

A Korean Flight Reservation System Using Continuous Speech Recognition

  • Choi, Jong-Ryong (School of Electrical and Electronics Engineering, Yeungnam University) ;
  • Kim, Bum-Koog (Dept. of Information and Computer Sciences, Toyohashi Univ.) ;
  • Chung, Hyun-Yeol (Dept. of Information and Computer Sciences, Toyohashi Univ.) ;
  • Nakagawa, Seiichi (School of Electrical and Electronics Engineering, Yeungnam University)
  • 발행 : 1996.09.01
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초록

This paper describes on the Korean continuous speech recognition system for flight reservation. It adopts a frame-synchronous One-Pass DP search algorithm driven by syntactic constraints of context free grammar(CFG). For recognition, 48 phoneme-like units(PLU) were defined and used as basic units for acoustic modeling of Korean. This modeling was conducted using a HMM technique, where each model has 4-states 3-continuous output probability distributions and 3-discrete-duration distributions. Language modeling by CFG was also applied to the task domain of flight reservation, which consisted of 346 words and 422 rewriting rules. In the tests, the sentence recognition rate of 62.6% was obtained after speaker adaptation.

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