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专利名称：METHOD AND DEVICE FOR SELF-ADAPTIVELY ELIMINATING NOISES
发明人：Fengliang Wu,Zhenhua Zhi申请号：US14412080申请日：20130902
公开号：US20150179160A1公开日：20150625
专利附图：
摘要：The present invention discloses a method and device for self-adaptivelyeliminating noises. Said method comprises: filtering the signal received by a first
microphone using a first filter, filtering the signal received by a second microphone using
a second filter, and obtaining a signal with noises reduced by subtracting the filteredsignals; wherein, in a noise segment, the coefficients of the first filter the second filter areupdated respectively using the signal with noises reduced such that the noise componentcontained in the signal filtered by the first filter tends to be the same with the noisecomponent contained in the signal filtered by the second filter; and in a noisy voicesegment, the coefficients of the first filter and the second filter are remained unchangedrespectively, the first filter and the second filter respectively use a coefficient updated inthe noise segment last time to filter the signals received by the first microphone and thesecond microphone. The present invention can address the problem that noiseeliminating effect is poor in the prior art caused by the fact that FIR filter cannotapproach the optimal solution for eliminating noises.
申请人：GOERTEK INC
地址：Weifang CN
国籍：CN
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