We have one new requirement which requires microphone and speaker to be run over long distance approx. 40 meters(basically human voice ). Do you have any suggestion of IC for preamplification (or any other)and that could run for that much distance.
We appreciate you if you could provide any reliable parts for the same with application note.
Currently we are using below microphone and speaker .
We can change the microphone and speaker but basic requirement is to run over long distance.