Trying to make a round-robin (time-slice based) array of microphones, which feed to the microphone input of a PC.
There are 2 things I am looking for some ideas / pointers on:-
The distance between mic and pc can be upto 50ft. What can I do to ensure that signal reaches PC with acceptable fidelity ? Do I need to do a pre-amp and feed to line-in of the PC instead ?
I need to run upto 20 mics, all connected to the same PC, with a single ordinary sound-card. The mics inputs are switched near the PC, based on a selection logic which is running on the PC. Clearly, I need only input from one mic at a time. Are there some pit-falls I should watch out for with this approach ?
Any existing schematics for such purpose would be really useful, but I do intend to upload a schematic for community validation shortly.