发明名称 |
SYSTEM AND METHOD FOR NOISE ROBUST SPEECH RECOGNITION USING HISTOGRAM EQUALIZATION WITH WINDOW-BASED TEST CUMULATIVE DISTRIBUTION FUNCTION ESTIMATION |
摘要 |
A voice recognition system and a method using histogram equalization technique by window base cumulative distribution function estimation are provided to reduce the degradation of voice recognition performance in the environment with noise. A voice input unit converts an analog voice signal into a digital signal(200). A characteristic extraction unit extracts an acoustic feature parameter in the frame unit(202), after dividing the digital voice signal in to a regular time interval(201). A characteristic compensation unit extracts a compensated feature parameter(203). A voice recognition engine performs a voice recognition and outputs the acknowledged result(204). |
申请公布号 |
KR20090072143(A) |
申请公布日期 |
2009.07.02 |
申请号 |
KR20070140155 |
申请日期 |
2007.12.28 |
申请人 |
KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY |
发明人 |
SUH, YOUNG JOO;KIM, HOI RIN |
分类号 |
G10L15/28;G10L15/02;G10L15/04;G10L25/03 |
主分类号 |
G10L15/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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