发明名称 |
A UNIVERSAL RECONFIGURABLE ECHO CANCELLATION SYSTEM |
摘要 |
A universal reconfigurable system and method are provided for reducing nonlinear echo and residual echo, and for echo leakage prevention in various time-varying and complex environments is proposed in this invention. According to one embodiment an echo cancellation system includes (1) an adaptive linear filter implemented in either time-domain or frequency-domain; (2) a nonlinear echo suppression; (3) echo leakage prevention; (4) direct current (DC), low frequency residual echo and noise reduction; (5) time-domain nonlinear processor (NLP) to reduce the residual echo; and (6) frequency-domain NLP to further reduce the residual echo. The echo cancellation system is universally applicable to acoustic echo cancellation (AEC) and/or electrical echo cancellation applications. In terms of AEC, this invention is reconfigurable for one or more microphones and/or one or more reference channels. The numbers of microphones and reference channels are user configurable. |
申请公布号 |
EP2845189(A4) |
申请公布日期 |
2016.01.13 |
申请号 |
EP20130784615 |
申请日期 |
2013.04.30 |
申请人 |
CREATIVE TECHNOLOGY LTD. |
发明人 |
YANG, JUN;MINETT, IAN;RIDDER, ROBERT;VERITY, STEVEN |
分类号 |
G10L21/0208;H04M9/08 |
主分类号 |
G10L21/0208 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|