Patent ID: 8917864
Filing Date: 2014-12-23
Classification: H04M

Abstract:
1. A communication terminal adapted to operate in a full-duplex audio communication mode, comprising: a detector of signals received by the terminal, adapted to produce a reception detection signal indicating a presence or absence of received signals; and a noise attenuation module arranged to attenuate transmission signals produced by the terminal when a level of said transmission signals is less than an activation threshold, the noise attenuation module is additionally adapted to select a value for the activation threshold in a manner which varies according to the reception detection signal, with a first value selected when received signals are absent, which is less than a second value selected when received signals are present, the terminal additionally being adapted to determine the first and the second values selected for the activation threshold so that said first and second values are additionally and respectively greater than a noise level of the transmission signals and greater than a level of a contribution from received signals which is present in said transmission signals.