Patent ID: 8121551

Claim:
A mobile terminal employing Time Division Multiple Access (TDMA), comprising: a storage unit for storing a gain control table, wherein the gain control table includes distinct gain control values used for controlling gains of at least one of an outgoing audio signal and an incoming audio signal in order to suppress frequency dependent noise in the at least one audio signal; an audio processing unit for processing the at least one audio signal by amplifying the at least one audio signal according to applied gain control values; and a control unit for measuring, during call processing, at least one of a transmit power level and a receive power level, determining corresponding gain control values from the gain control table, and applying the determined gain control values to the audio processing unit, wherein the distinct gain control values in the gain control table correspond to transmit-power frequencies or receive-power frequencies related to at least one of transmit power levels and receive power levels; and wherein the transmit-power frequencies or receive-power frequencies are an integer multiple of a fundamental frequency that corresponds to one repetition period of data transmission and reception.