Maybe this has already been done before.
My wife and I have 5 Great Danes. It is very difficult for us to leave the house for long periods for fear of our house being torn apart while we're gone. I recently installed cameras so we can keep an eye on them in the house.
Now my idea:
Is it possible for me to integrate a loud speaker of some sort into the system? It would be awesome if one day, the wife and I were out to dinner, I checked the camera, saw one of the dogs chewing on the sofa cushion, and had the ability to yell over a speaker to make them stop.
I imagine it may lose effectiveness over a period of time, but maybe not.
I have heard of alarm companies that can establish a live link and voice threated a burgler out of the house. Does that technology exist for the regular consumer?