Patent ID: 8031863

Claim:
An apparatus for controlling acoustic echo cancellation in a mobile communication terminal, comprising: a down-analog unit which converts a digital receiving signal inputted through a downlink path into an analog signal and outputs the converted analog signal to a speaker; a level detecting unit which detects a level of the analog signal outputted to the speaker; an up-analog unit which converts an analog transmitting signal from a microphone into a digital transmitting signal, for outputting through an uplink; and an acoustic echo canceller which detects a level of the digital receiving signal inputted through the downlink path, adaptively determines an attenuation value of the digital transmitting signal based on the level of the analog signal detected by the level detecting unit and the level of the digital receiving signal, and attenuates the digital transmitting signal according to the determined attenuation value, wherein the acoustic echo canceller determines the attenuation value of the digital transmitting signal based on a first activation signal generated based on the analog signal and a second activation signal generated based on the digital receiving signal.