Study On Soundscape Design For Commerical Open Space

The commercial open space is an important component of modern cities and thesoundscape design of those areas becomes a new problem worthy of studying.Unfortunately, due to the main purpose of those study on soundscape design in openspace only focused on improving the founded environment rather than optimizing theblock design in the construction process, the mechanism of soundscape design incommercial spaces has not been explored systematically and deeply until now.Because soundscape design was not accepted by architect and urban planners, itcouldn’t be considered in the construction design process. Therefor, the soundscapedesign rules from the point of view of block design and architecture design seems tobe particularly important.This study aims to carry out the principles of soundscape design by researchingthe soundscape of commercial open space. So that a comfortable environmentcombined the acoustic and block design can be provided. The sound situation,acoustic comfort evaluation and the environmental situation were investigated throughphysical measurement and social surveys. It was found that people were not satisfiedwith the commercial open space because of the problem of the sound environment.Autocorrelation function (ACF) and interaural cross-correlation function (IACF) areused to analyze the acoustical properties of ten sound samples, in order to find out thesuitable physical parameters which could influence subjective evaluation in thecommercial open area.The indicator which affect the noise annoyance were soundenergy, tones and spatial sense. Correspondingly, the factors in the commercial openspace were spatial design, architectural materials and environment color. Combinedwith laboratory evaluation and computer simulation, the factors affected commercialopen space noise annoyance were carried out, such as the spatial ratio, suitable spatialscale, the architecture materials with good effect of absorbing high-frequency and thecolor of advertisement. All of those factors could improve the evaluation ofcommercial open space.In order to improve the quality of environment, except the traditional designtheory, the further block planning design should be considered based on thesoundscape design. To provide a simple operation of soundscape design for urbanplanner, the points of soundcape design were summarized in the view of block design. This study try to offer a theoretical discussion feasibility for operating on thesoundscape design rules.Hope that it can be a help for the research and design ofsoundscape in the future.