Patent ID: 8331552
Filing Date: 2012-12-11
Classification: H04B,H04M

Abstract:
1. A method for detecting double talk in a telecommunications network, the method comprising: (a) generating a measure of average energy of a near-end signal in the telecommunications network; (b) generating a measure of average energy of a far-end signal in the telecommunications network; (c) generating a double-talk (DT) decision statistic based on the near-end average energy measure and the far-end average energy measure, wherein step (c) comprises: (d) generating a DT decision as to whether or not double talk is present in the telecommunications network based on the DT decision statistic, wherein the telecommunications network filters the far-end signal based on a set of filter coefficients to generate an estimate of echo in the near-end signal; and (e) determining whether or not to inhibit updating the set of filter coefficients based on the DT decision, wherein step (e) comprises: