发明授权
- 专利标题： Zero-delay structure for sub-band echo cancellation
- 专利标题（中）： 用于子带回波消除的零延迟结构
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申请号： US09414413申请日： 1999-10-07
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公开(公告)号： US06661895B1公开(公告)日： 2003-12-09
- 发明人: Qu Jin , Kon Max Wong , Qiang Wu , Philippe Wu , Gordon J. Reesor
- 申请人： Qu Jin , Kon Max Wong , Qiang Wu , Philippe Wu , Gordon J. Reesor
- 优先权： GB9821866 19981007
- 主分类号： H04M908
- IPC分类号： H04M908
摘要：
A zero-delay structure to be used in sub-band echo cancellation systems. In telecommunications, a delay is usually introduced in sub-band decomposition and/or sub-band reconstruction. This invention will help remove this. This structure not only removes the delay but does not sacrifice the performance of the echo canceller. It is to be used in combination with any sub-band-based echo canceller or wavelet echo canceller.
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