Hello,
I have built one of the basic isolated POTS interface circuits, using it record a call (into the mic jack of my soundcard), or using it to play an audio file into the line (from the output of my soundcard).
Currently, I just plug into either the microphone jack or the output jack, but I would like a way to not have to keep plugging and unplugging every time I change mode from play to record.
So, would there be anything inherently wrong with connecting *both* the microphone input and the output together at the same point in the circuit? I would naturally mute the output while recording, to avoid feedback.
Will this work, or is there a more elegant solution to isolate the two points on the soundcard?
Thanks,
Jon