发明名称 |
Device and method for controlling damping of residual echo |
摘要 |
The present invention relates to a device, such as a communication device, comprising an adaptive foreground filter configured to calculate a first echo estimation signal based on a first input signal, and an adaptive background filter being more rapidly adapting than the foreground filter and configured to calculate a second echo estimation signal based on said first input signal. Embodiments of the device further comprise damping control means for controlling damping of an echo-cancelled output signal. The device in various embodiments includes that the damping control means is configured to calculate a maximum echo estimation signal using both the first and the second echo estimation signals, and control the damping of the echo-cancelled output signal based on said maximum echo estimation signal and/or a signal derived from said maximum echo estimation signal. |
申请公布号 |
US8693678(B2) |
申请公布日期 |
2014.04.08 |
申请号 |
US201013384554 |
申请日期 |
2010.06.17 |
申请人 |
LINDSTROEM FREDRIC;SCHUELDT CHRISTIAN;CLAESSON INGVAR;LIMES AUDIO AB |
发明人 |
LINDSTROEM FREDRIC;SCHUELDT CHRISTIAN;CLAESSON INGVAR |
分类号 |
H04M9/08;G10L21/02;G10L21/0208 |
主分类号 |
H04M9/08 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|