This book mainly presents the state-of-the-art development in indoor sound environment. Not simply introducing the research on the acoustic environment or noise level of indoor building, the book considers the differences in the function of buildings and the perception of acoustic environment, as well as the relationship between sound quality and health and behavior. The book includes the multidisciplinary studies in architecture, acoustics, environmental science, psychology, sociology, and management. Therefore, it is used as a guide for government decision-makers, developers, planners, and architects to understand the effects of architectural design on building acoustic environment.