| 摘要 |
PURPOSE:To completely silence a voice in an information processing system, which can process the voice, when the set value of an electronic volume is '0'. CONSTITUTION:An external input 2 or the output of a built-in voice source 1 is inputted to an electronic volume 3. The output of the electronic volume 3 is sent through a mute 4 to an external output 5. An electronic volume setting processing part 6 is composed of a processor and a control program, for example. When the electronic volume setting processing part 6 is activated and the set value is inputted to the electronic volume 3, the electronic volume setting processing part 6 investigates whether the set value is '0' or not. When the set value is '0', the output of the electronic volume 3 and the external output 5 are electrically disconnected by turning on the mute 4. When the set value is not '0', the output of the electronic volume 3 and the external output 5 are electrically connected by turning off the mute 4, and the set value is set to the electronic volume. |
