发明授权
- 专利标题: Echo suppression and echo cancellation
- 专利标题(中): 回声抑制和回声消除
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申请号: US09670870申请日: 2000-09-27
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公开(公告)号: US07099460B1公开(公告)日: 2006-08-29
- 发明人: Boaz Or Shraga , Mark Shahaf , Izak Avayu , Yishay Ben-Shimol
- 申请人: Boaz Or Shraga , Mark Shahaf , Izak Avayu , Yishay Ben-Shimol
- 申请人地址: US IL Schaumburg
- 专利权人: Motorola, Inc.
- 当前专利权人: Motorola, Inc.
- 当前专利权人地址: US IL Schaumburg
- 代理商 Val Jean Hillman; Valerie M. Davis
- 优先权: GB9926731.2 19991111
- 主分类号: H04B3/23
- IPC分类号: H04B3/23
摘要:
Echo canceling method including the steps of determining an Euclidean norm of an echo-replica signal, determining an Euclidean norm of an input signal, determining a gradient step size, correcting the coefficients of an adaptive filter, deriving an updated echo-replica signal, and determining an updated error signal by subtracting the updated echo-replica signal from the input signal.
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