发明名称 |
DETECTION OF DOUBLE TALK IN TELECOMMUNICATIONS NETWORKS |
摘要 |
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. |
申请公布号 |
US2016006480(A1) |
申请公布日期 |
2016.01.07 |
申请号 |
US201514853979 |
申请日期 |
2015.09.14 |
申请人 |
Intel Corporation |
发明人 |
Tan Mizhou |
分类号 |
H04B3/23;H04M9/08;H04M3/36 |
主分类号 |
H04B3/23 |
代理机构 |
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代理人 |
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主权项 |
1. One or more machine-readable storage media comprising a plurality of instructions stored thereon that, when executed, cause a controller to:
generate a measure of average energy of a near-end signal in the telecommunications network; generate a measure of average energy of a far-end signal in the telecommunications network; generate a double-talk (DT) decision statistic based on the near-end average energy measure and the far-end average energy measure, wherein to generate the DT decision statistic comprises to (i) generate an estimate of echo return loss (ERL) based on the near-end average energy measure and the far-end average energy measure and (ii) generate the DT decision statistic based on the ERL estimate, the near-end average energy measure, and the far-end average energy measure; and generate a DT decision as to whether or not double talk is present in the telecommunications network based on the DT decision statistic. |
地址 |
Santa Clara CA US |