More kids = More volume

My kids are not very quiet, and I already boss around a lot about such a long list of things that I try not to interfere with making noise too much. We do live in an appartment building, though, so thumping, hammering, making loud music and shouting are no-gos early in the morning or late in the evening. Screaming is always a no-go, as is shouting on the balcony. But i have to admit that one of the issues that stresses me a lot about having kids is that it involves a lot of decibels. Kids are simply loud - all you need to do is to enter a sports room or courtyard at kindergarten during a break to believe it. Or try to have dinner at our place with a number of parents trying to have a discussion, and a larger number of kids bouncing around enjoying their games. Send 'em out into the garden is not possible in our flat, nor in inner-city Berlin. And especially when kids have social time with friends, I'm not a fan of that quieting TV/videos (our kids aren't allowed to watch much nor regularly - they'll do that enough later in life, unfortunately). So noise it is. And the more kids, the noisier it gets. When the base is 3 and it's not uncommon that we have 6 here at one go, very noisy...