I’m a big fan of city life but I’m the first to acknowledge that there are drawbacks to crowding and congestion. The foremost of those is noise. Cities are noisier than the burbs and the countryside. The older I get (I’m 61 now), the larger the noise factor looms in my consideration of things. Even in suburbs, it doesn’t take much commotion to jangle my nerves. In the early morning birds can drive me crazy with all their chirping and cawing and twittering. As for children, don’t get me started. The noise-oblivious little monsters can be worse than freight trains. If it sounds like I’m turning into a cranky old man… yes, I believe that’s exactly what’s happening.

As a rule, cities are even noisier than the burbs. People are more densely packed in urban areas, so there are more people — more drunks, more wife beaters, more backyard dogs, more buses, more sirens, more jackhammers, more big, honking HVACs — generating sound waves within hearing distance. Cities also have more concrete and masonry that reflect sound and less in the way of trees, bushes and vegetative mass to dampen it. According to the World Health Organization (WHO), problems resulting from too much noise include poor work and school performance and even cardiovascular problems. Clearly, in the battle for livability, the noise factor favors suburbs, small towns and rural areas.

How does a city combat that disadvantage? Ordinances can limit excessive noise from construction, honking horns or barking dogs. Transportation officials can build sound walls along highways. Aside from such obvious measures, one useful place to start is to measure decibel levels to visualize where noise is the worst. Thanks to the increasing ubiquity of smart phones, the practice of noise mapping is spreading around the world. Continue reading →