We really want to be respectful of our neighbors and their desire for peace and quiet in their living space. So, if we think there is a possibility of our guests having a large crowd or just making lots of noise that will disturb the neighborhood, we install sound sensors that notify us if there is consistent loud noise. We install one indoors and sometimes a second one outdoors. NoiseAware (www.noiseaware.com) makes such a system. You sometimes can even get a reduction in your insurance cost when you have these little babies installed!