Abstract

Facades cover a significant amount of surfaces in cities and are in constant interaction with the acoustic environment. Noise pollution is one of the most concerning burdens for public health and wellbeing; however, facade acoustic performance is generally not considered in outdoor spaces, in contrast to indoor spaces. This study presents a systematic literature review examining 40 peer-reviewed papers regarding the effects of facades on the urban acoustic environment and the soundscape. Facades affect sound pressure levels and reverberation time in urban spaces and can affect people's perception of the acoustic environment. The effects are classified into three groups: Effects of facades on the urban acoustic environment, including sound-reflecting, sound-absorbing and sound-producing effects; Effects of facades on the urban soundscape, including auditory and non-auditory effects; Effects of the context on the acoustic environment around facades, including boundary effects and atmospheric effects.