웨어러블 환경에서 가장 유용한 사용자 인터페이스는 음성이다. 그러나 현재 노이즈 제거 기술로는 웨어러블 환경과 같은 고소음 환경에서 음성 인식기의 실제적인 응용은 거의 불가능하다. 본 논문은 환경노이즈를 원천적으로 차단하는 성대 마이크를 이용한 명령어 인식기를 개발한다. 이를 위해 성대신호를 한국어 음운자질 이론을 기반으로 설명하고, 입력신호를 분석하여 이러한 접근방법의 타당성을 검증한다. 이러한 성대신호의 분석을 위해 스펙트럼과, FFT 결과를 사용하고, MFCC 알고리즘을 이용하여 주파수 영역내의 정보량이 인식에 미치는 영향을 분석한다. 그리고 분석결과를 바탕으로 성대신호 명령어 인식기를 위한 특징벡터로 유/무성음 분리에 사용되는 특징벡터가 유용함을 ZCPA 알고리즘을 이용한 성대신호 명령어 인식기를 개발하여 검증한다. 실험결과 ZCPA 를 사용한 것이 MFCC 에 비해 16%높은 인식률을 보인다.
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