대한전자공학회논문지 (Journal of the Korean Institute of Telematics and Electronics)
- 제17권3호
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- Pages.12-19
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- 1980
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- 1016-135X(pISSN)
선형예측에 의한 숫자음성 자동인식
A Spoken Korean-Digits Recognition System Based on Linear Prdiction Spectra
초록
A speech recognition system for separately pronounced Korean digits is described. The system is composed of four stages ; parameter extraction, segmentation by voiced-unovied analysis, formant tracking and pattern matching. Digit speech is segmented into an unvoiced segment and/or a voiced one using ZCR and energy measurements, then to estimate the first three formant frequencies a relatively simple formant tracking scheme is applied to the raw formant data extracted from linear prediction spectra. Finally, pattern matching is made using dynamic programmig method. Recognition experiment is carried out for 150 digit utterences spoken by three male speakers, and recgnition rate 94 % is obtained.
키워드