Like the landscape, each city has a unique soundscape. In addition to the typical sounds of traffic and people, San Francisco has some identifiably unique sounds like cable cars, fog horns, trolleys and on occasion, the Blue Angels performing overhead. Almost all of us delight in these sounds because they help define the sense of place. They heighten our everyday experience. Sounds are an integral part of our experience, as you know if you’ve ever been to a carnival, sporting event or marketplace. And recalling sounds often brings back vivid visual memories of a place or time.