发明授权
- 专利标题： Method and apparatus for frequency selective adaptive filtering
- 专利标题（中）： 用于频率选择性自适应滤波的方法和装置
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申请号： US528391申请日： 1995-09-13
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公开(公告)号： US5644596A公开(公告)日： 1997-07-01
- 发明人: Gilbert C. Sih
- 申请人： Gilbert C. Sih
- 申请人地址： CA San Diego
- 专利权人： Qualcomm Incorporated
- 当前专利权人： Qualcomm Incorporated
- 当前专利权人地址： CA San Diego
- 主分类号： H03H21/00
- IPC分类号： H03H21/00 ; H03H7/30
摘要：
A method and apparatus for performing subband adaptive filtering is proposed. A signal is prefiltered by a set of complementary filters to provide corresponding subbands of the input signal. The subbands of the signal are then provided to adaptive filters that filter the subbands separately. The individually filtered subbands are then summed. In an exemplary implementation an echo canceller is presented which employs the subband filtering method and apparatus.
公开/授权文献
- US5155481A Two and three wire utility data communications system 公开/授权日：1992-10-13
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