SOUND VOLUME ADJUSTOR FOR VOICE OUTPUT DEVICE

PURPOSE:To always make the output of a voice output device, i.e., a sound volume appropriate by detecting a surrounding sound volume and a time, and adjusting the sound volume by the fuzzy eduction based on the sound volume and the time data. CONSTITUTION:An output sound volume input section 1 detects a current supplied to a sound output section 7 such as a speaker and outputs a detection signal S1 representing the sound volume outputted from the sound output section 7. A surrounding sound volume input section 2 detects the surrounding sound volume from a microphone and outputs a detection signal S2. A clock section 3 outputs a time data D. The detection signal S1, S2 and the time data D are inputted to a fuzzy eduction section 4, from which a proper sound volume in matching with the surrounding is always obtained based on a data from a fuzzy memory section 5 receiving a condition to adjust the sound volume in advance.