Invention Grant
US07970124B2 Adaptive gain control based on echo canceller performance information
失效
基于回波消除器性能信息的自适应增益控制
- Patent Title: Adaptive gain control based on echo canceller performance information
- Patent Title (中): 基于回波消除器性能信息的自适应增益控制
-
Application No.: US11621327Application Date: 2007-01-09
-
Publication No.: US07970124B2Publication Date: 2011-06-28
- Inventor: Wilfrid LeBlanc
- Applicant: Wilfrid LeBlanc
- Applicant Address: US CA Irvine
- Assignee: Broadcom Corporation
- Current Assignee: Broadcom Corporation
- Current Assignee Address: US CA Irvine
- Agency: McAndrews, Held & Malloy, Ltd.
- Main IPC: H04M9/08
- IPC: H04M9/08

Abstract:
A system and method for provide a stable gain from an adaptive gain control device in a signal path. An echo canceller is also located in the signal path, and is used to provide performance information regarding losses in the signal. This performance information is fed to the automatic gain control device via a connection. The automatic gain control device thereafter uses the performance information to determine a maximum gain that might be provided based upon losses cause by echo conditions. The gain however is limited in order to provide for a stable system. The performance information includes a loss rate that includes a combination of the echo return loss and the echo return loss enhancement.
Public/Granted literature
- US20070127711A1 ADAPTIVE GAIN CONTROL BASED ON ECHO CANCELLER PERFORMANCE INFORMATION Public/Granted day:2007-06-07
Information query