发明名称 |
Convolutive blind source separation using relative optimization |
摘要 |
A method and apparatus for separating a multi-channel mixed signal are provided. The method includes the steps of: a) transforming a temporal domain to a frequency domain by performing a discrete Fourier transform onto at least one of mixed signals inputted from an external device through multi-channel; b) estimating multi-decorrelation by calculating a plurality of cross power spectra for the mixed signal in the transformed frequency domain; c) estimating a separation coefficient of the mixed signal based on relative optimization in order to decorrelate the calculated cross power spectra, where the separation coefficient is serially updated; d) transforming the frequency domain to the temporal domain by performing an inverse discrete Fourier transform on the estimated separation coefficient in the temporal domain; and e) separating an original signal from the mixed signal by filtering the mixed signal using the separation coefficient of the transformed temporal domain.
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申请公布号 |
US2007058737(A1) |
申请公布日期 |
2007.03.15 |
申请号 |
US20060478212 |
申请日期 |
2006.06.29 |
申请人 |
JANG IN-SEON;NAM KI-JOENG;CHOI HEE-YOUL;CHOI SEUNG-JIN;KANG KYEONG-OK |
发明人 |
JANG IN-SEON;NAM KI-JOENG;CHOI HEE-YOUL;CHOI SEUNG-JIN;KANG KYEONG-OK |
分类号 |
H04K1/10;H04L27/06 |
主分类号 |
H04K1/10 |
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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