发明名称 |
REDUCING NOISE PUMPING DUE TO NOISE SUPPRESSION AND ECHO CONTROL INTERACTION |
摘要 |
<p>An input signal is processed through noise suppression (NS) and echo control (EC) via a multipath model that reduces noise pumping effects while maintaining EC performance. A copy of a“noisy”input signal is sent to an EC component before the noisy signal is sent to a NS component, which processes the signal first, when there is a consistent noise level for estimation. The copy of the pre-processing noisy signal is sent to the EC component along with a“clean”or“noise-suppressed”signal output from the NS component. The EC component analyzes the noisy signal as if the EC was the first component in the signal chain to determine what actions to take. The EC component then applies these actions to the clean signal received from the NS component.</p> |
申请公布号 |
EP2710591(A1) |
申请公布日期 |
2014.03.26 |
申请号 |
EP20120720317 |
申请日期 |
2012.04.13 |
申请人 |
GOOGLE INC. |
发明人 |
MACDONALD, JOHN ANDREW;SKOGLUND, JAN;VOLCKER, BJOERN |
分类号 |
G10L21/0208;G10L25/18;H04M9/08 |
主分类号 |
G10L21/0208 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|