Invention Grant
- Patent Title: Detection of double talk in telecommunications networks
- Patent Title (中): 检测电信网络中的双重通话
-
Application No.: US13667331Application Date: 2012-11-02
-
Publication No.: US09136906B2Publication Date: 2015-09-15
- Inventor: Mizhou Tan
- Applicant: Intel Corporation
- Applicant Address: US CA Santa Clara
- Assignee: Intel Corporation
- Current Assignee: Intel Corporation
- Current Assignee Address: US CA Santa Clara
- Agency: Barnes & Thornburg LLP
- Main IPC: H04M9/08
- IPC: H04M9/08 ; H04B3/23

Abstract:
In one embodiment, the presence of double talk (DT) is detected in a telecommunications network having a near-end user and a far-end user. The energies of both (1) a signal received from the far-end user by the near-end user and (2) a signal to be communicated from the near-end user to the far-end user are computed. An echo return loss (ERL) estimate is calculated based on the energy calculations, and a preliminary decision is made as to whether DT is present based on the ERL estimate and the energy calculations. If DT is detected, then a counter is set to a hangover value. If DT is not detected, then the counter is reduced. This process is repeated, and, for each iteration, a final decision as to whether DT is present is made based on the counter value.
Public/Granted literature
- US20130058464A1 DETECTION OF DOUBLE TALK IN TELECOMMUNICATIONS NETWORKS Public/Granted day:2013-03-07
Information query