Joe,
Peace.
Sorry for the over the top response. I get your concern about noise.
I like how solotripper put it. Usually the adults are the biggest part of the problem, no matter how young the kids are.
We started 'em young and that also meant teaching them to be quiet and respectful of others wilderness experiences. ( Even at an early age - a variation on the old "kids should be seen and not heard" routine )
Take care and may your next canoe trip be quiet and peaceful.
GeneM