| 摘要 |
<p>A full duplex audio communication terminal (100) comprises a noise attenuation module (4) arranged on a transmission path of the terminal. The noise attenuation module comprises two activation thresholds, which are respectively intended to be adjusted above a noise level and above an echo level of transmission signals (TC) produced by the terminal. The first or the second activation threshold is selected as a function of the detection of signals (R) received by said terminal. An improvement to the suppression in the transmission signals of echoes from received signals is thus obtained which is compatible with the principle of full duplex communication. Preferably, the noise attenuation module processes transmission signals which are produced by an echo compensator (2). Residual echo still present in the transmission signals already processed by the echo compensator is thus further reduced.</p> |
