发明名称 |
Acoustic echo devices and methods |
摘要 |
Hands-free phones with echo cancellation using dual filters, one fast adapting filter and one slow adapting filter; the choice of filters includes switching with hysteresis from recent performance, and the fast adapting filter has stepsize control to limit relative filter update energy and the slow adapting filter limits filter divergence.
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申请公布号 |
US2006147032(A1) |
申请公布日期 |
2006.07.06 |
申请号 |
US20050323567 |
申请日期 |
2005.12.30 |
申请人 |
MCCREE ALAN V;UNNO TAKAHIRO;GALL THIERRY L;GUIRIEC SEBASTIEN |
发明人 |
MCCREE ALAN V.;UNNO TAKAHIRO;GALL THIERRY L.;GUIRIEC SEBASTIEN |
分类号 |
H04M9/08 |
主分类号 |
H04M9/08 |
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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