发明名称 |
Acoustic echo suppression |
摘要 |
<p>A controller for an echo suppressor configured to suppress a residual echo of a far-end signal included in a primary error signal, the controller adapted for operation with a primary adaptive filter configured to form a primary echo estimate of the far-end signal included in a microphone signal and an echo canceller configured to cancel that primary echo estimate from the microphone signal so as to form the primary error signal, the controller comprising: a secondary adaptive filter configured to form a secondary echo estimate of the far-end signal comprised in the microphone signal; and control logic operable in at least two modes selected in dependence on a convergence state of the primary adaptive filter, the control logic being configured to control activation of the echo suppressor in dependence one or more transient or steady state decision parameters.</p> |
申请公布号 |
GB2515593(B) |
申请公布日期 |
2015.12.23 |
申请号 |
GB20130022926 |
申请日期 |
2013.12.23 |
申请人 |
IMAGINATION TECHNOLOGIES LIMITED |
发明人 |
SENTHIL KUMAR MANI;GANDHI NAMANI |
分类号 |
H04M9/08;H04B3/20;H04M3/00 |
主分类号 |
H04M9/08 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|