AUTOMATIC OUTPUT SOUND VOLUME CONTROLLER, AND AUTOMATIC OUTPUT SOUND VOLUME CONTROL METHOD

摘要

PROBLEM TO BE SOLVED: To perform automatic control of output sound volume even immediately after start of audio input.;SOLUTION: The automatic output sound volume controller includes an audio codec unit 13 for converting a receiving input signal to an audio signal, an input signal level measuring unit 19 for measuring sound level of audio signal only for the predetermined time immediately after start of measurement and executes measurement for the time longer than the predetermined period after the predetermined time has passed, an amplifying unit 14 for amplifying or attenuating sound level of audio signal depending on comparison result by comparing the sound level with the preset sound level, and a speaker 15 for outputting the amplified or attenuated audio signal.;COPYRIGHT: (C)2010,JPO&INPIT