APPARATUS AND A METHOD FOR AUTOMATICALLY CONTROLLING THE LEVEL OF A RECEIVED VOICE OF MOBILE TERMINAL, PARTICULARLY FOR CONTROLLING A RECEPTION LEVEL OF A VOICE GRADE SIGNAL BY CONTROLLING A VOLUME RESISTANCE VALUE IN PROPORTION TO AN EXTERNAL FORCE SENSED BY PIEZOELECTRIC SENSOR

摘要

PURPOSE: An apparatus and method for automatically controlling a level of a received voice of a mobile terminal are provided to allow a user to conveniently perform voice call communication with the other party in an area where a radio environment is not good. CONSTITUTION: A piezoelectric sensor unit(30) detects an external force and outputs a corresponding control signal. A baseband unit(60) receives a voice grade signal from the other party and outputs it as a baseband signal. A level controller(50) receives the voice grade signal applied from the baseband unit(60), controls a level of the voice grade signal according to the control signal applied from the piezoelectric sensor unit(30), and outputs the level-controlled voice grade signal. A speaker(20) converts the voice grade signal applied from the level controller(50) into an audible signal, and outputs it.