Passive noise reduction technology is not enough to improve the acoustic comfort of the indoor acoustic environment. This paper discusses the application prospects of active noise control technology in the indoor acoustic environment, studies the principle and development status of active noise control technology, describes the determinants of the effect about the active noise control and the application prospects in the indoor acoustic environment, and points out the current problems to be solved in the research and future research directions.

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With the construction of a large number of affordable housing and the development of green buildings, the design of green affordable housing has become a new concern and research topic in China’s residential architectural design, and the interior design of affordable housing has become a top priority. This article takes Changchun city as an example, through the research of affordable housing in Changchun, visit, found the main problems existing in the status quo, in view of the problems put forward housing interior space design optimization principle, and according to the design principles of indoor space scale, provides a good green indoor living environment for green residential tenants in cold areas.

The outdoor wind environment has a significant impact on the climate of cold-weather cities, and it has been shown that building layout has a significant correlation with the climate environment. This paper takes Changchun, a cold-land city in the northeast of China, as an example to study the correlation between the existing building layout and the wind environment in a cold-land city based on its special climate environment, uses computational fluid dynamics (CFD) simulation technology to analyze the influence of different building layouts on the external wind environment in a cold-land city, explores the building layout mode suitable for a cold-land city based on the obvious characteristics of the climate monsoonal changes, and puts forward certain optimization methods and reference suggestions for city construction.

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