发明名称 |
Microphone array method and system, and speech recognition method and system using the same |
摘要 |
A microphone array system including an input unit to receive sound signals using a plurality of microphones; a frequency splitter splitting each sound signal received into a plurality of narrowband signals; an average spatial covariance matrix estimator using spatial smoothing to obtain a spatial covariance matrix for each frequency component of the sound signal, by which spatial covariance matrices for a plurality of virtual sub-arrays, which are configured in the plurality of microphones, are obtained with respect to each frequency component of the sound signal and an average spatial covariance matrix is calculated; a signal source location detector to detect an incidence angle of the sound signal according to the average spatial covariance matrix calculated; a signal distortion compensator to calculate a weight for each frequency component of the sound signal based on the incidence angle of the sound signal and multiply the calculated weight by each frequency component.
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申请公布号 |
US7567678(B2) |
申请公布日期 |
2009.07.28 |
申请号 |
US20040836207 |
申请日期 |
2004.05.03 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
KONG DONG-GEON;CHOI CHANG-KYU;BANG SEOK-WON;LEE BON-YOUNG |
分类号 |
G10L15/28;H04R3/00;G10L15/20;G10L21/02;H04R1/40 |
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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