Yep... there was buzz last year about a cell phone ringer that had such a high pitch that only kids could hear it, thus making it so that a teacher couldn't hear the ringing!
My parents had issues with the neighbor's two german sheppards barking all night (and they live in a subdivision where the houses are extremely close together) and we ended up having to take them to court. The best advice I can give is to make sure that you document everything. The day and time...