Today we are facing the consequences of about 100 years of urbanization, confronting questions about quality of life in relation to efficiency and economical benefits. Hard facts are considered to be more reliable than values which are not so easily measurable. The quality of sound is one of them. Urban designers and architects are currently not fully aware of the interaction between the built outcomes of their work and the process of propagation and perception of sound. Designing houses, relations between houses, connections between places, whole neighborhoods, and cities is a serious task affecting many different aspects of life. But we can still note a recurring absence of knowledge regarding the complex relation between visual and sonic realities. This reality is in fact what surrounds the urban inhabitant for an entire lifetime. But what can or should the architects and planners do? As has been recently pointed out in a report on the subject, this professional group is lacking the tools, language, and guiding examples for being able to implement anything in reality. Implementing what? What can really be done or designed to improve the sonic environment and for what purpose?