I have 2 low level audio signals. Called X and Y.
I need a logical output of either X, Y, or X+Y. Logic is handled by two multiplexers and summing by an op amp summing amplifier. I want the multiplexing to happen before the op-amp stage.
X+Y is simple, both enter the summing op-amp. I need some options to produce X and Y. In the cases when I need the audio of X or Y alone, I need some option. One way could be to turn the enable of one multiplexer off, floating the input ling to the op-amp. Or the multiplexer to tie one of the lines to ground.
I need a good signal to noise solution. This is audio after all.
Latch