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经营范围
发明名称
Acoustic echo canceler
摘要
申请公布号
EP0746134(B1)
申请公布日期
2006.07.19
申请号
EP19960303622
申请日期
1996.05.21
申请人
AT&T CORP.
发明人
DUTTWEILER, DONALD LARS
分类号
H03H21/00;H04M9/08;H03H17/00;H04B3/23
主分类号
H03H21/00
代理机构
代理人
主权项
地址
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