发明名称 |
Adaptive echo cancelling system for telephony applications |
摘要 |
This invention deals with an adaptive echo cancelling system for communication networks. The system includes an adaptive filter for acoustic echo cancellation that uses a combination of echo cancelling and gain control techniques. The main advantages of the combination of these approaches are good communication quality during double talk and easier control of the output echo level.
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申请公布号 |
US6108412(A) |
申请公布日期 |
2000.08.22 |
申请号 |
US19970946311 |
申请日期 |
1997.10.07 |
申请人 |
NORTEL NETWORKS CORPORATION |
发明人 |
LIU, QING-GUANG;CHAMPAGNE, BENOIT JOSEPH FELIX |
分类号 |
H04B3/23;(IPC1-7):H04B3/23 |
主分类号 |
H04B3/23 |
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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