| 摘要 |
PROBLEM TO BE SOLVED: To provide an audio signal selector circuit capable of making the configuration of the circuit simpler as a whole without necessity of a changing switch operated by an outer signal. SOLUTION: In the selector circuit being supplied sound signals from plural sound sources to a selecting switch (SW11), outputting selectively one of the sound signals from the sources switching the switch (SW11) according to operation mode based on operation signals of operating switches (SWA2, SWC2, SWD2), a muting means (43) outputting muting the sound signal during the period including the rise and fall of the operation signals of the switches (SWA2, SWD2) is equipped, so that whole of circuit configuration is made simpler without necessity of the changing switch needed conventionally and operated by the outer control signal.
|
