| 摘要 |
PURPOSE:To attain ease of speech by decreasing automatically the sound volume of the electronic device during talking. CONSTITUTION:The subject electronic device such as a television receiver listening to an output audio signal is provided with an incoming call detection means 13 detecting the incoming call of a telephone call, sound volume control means 7, 9 controlling the sound volume of the output voice signal, and the sound volume control means 7, 9 are operated based on a detection output when the incoming call detection means 13 detects the arrival of the call to the telephone set so as to set the output voice signal to a prescribed level or below. |
