Effect Of Spatial Elements On Soundscape In Commercial Building Atria

Commercial shopping malls play a mutually reinforcing role in the development of the city.As the rich and interesting point of the shopping mall space,the atrium has become an important part of the shopping mall,and the research of its sound perception is very necessary.Based on the in-depth study of the characteristics of the existing mall atrium,this paper divides it into several categories according to the layout of the atrium in the mall,and selects the centralized layout atrium and the linear layout atrium as the research objects.Through the literature review,the spatial elements that may affect the perception of the atrium environment are summarized.The objective survey and questionnaire are conducted through field research.Finally,the influence of the spatial elements of the atrium on the environment perception is deeply analyzed.For the centralized layout of the atrium,this paper first analyzes the correlation between sound perception and space perception,and finds that space comfort is the strongest correlation with the indicators of sound environment.Secondly,it is found that the plane ratio of the atrium significantly affects the evaluation of acoustic comfort,subjective loudness,subjective reverberation,atmosphere perception and emotion,and the evaluation of the square atrium is significantly higher than that of the rectangular atrium except for the perception of atmosphere;Whether it is acoustic comfort,space comfort,subjective brightness or subjective space openness is significantly higher than the deep atrium.For the top form,the evaluation of acoustic comfort,subjective loudness,relaxation,space comfort and subjective brightness were significantly higher than the atrium without a skylight.The combination of “depth* skylight” has an impact on most indicators,and the combination of “depth * square or rectangle” makes a significant difference in acoustic comfort and space comfort,and when “without a skylight” and “square” are combined,both reaches the maximum value.For the linear layout of the atrium,this paper finds that space comfort and emotions maybe important spatial evaluation indicators that affect the soundscape.When the user stays in the atrium in the linear layout,the presence or absence of the atrium has a significant impact on the indicators except subjective reverberation and subjective spatial openness.The evaluation of perception in the atrium area is higher than that of in the no atrium area.The profile ratio of the atrium does not affect the evaluation of acoustic comfort,but it will affect the evaluation of space comfort,and the evaluation of the shallow atrium is higher than that of the deep atrium.When the user walks in the atrium in the online layout,for the sequence of alternating atriums,except for the perception of atmosphere,most of the other evaluation indicators have a high evaluation in the atrium and a low in no atrium area.The fluctuation of the perception in alternate atrium is reduced.For the sequence of the atrium profile change,the sequence changes have a significant impact on the acoustic comfort and space comfort,and when the sequence of the atriums all are shallow atrium,all indicators gradually decrease.For the sequence with a mutation atrium,whether sound perception or spatial perception has no abrupt effect.For the sequence of path direction changes,the acoustic comfort and space comfort in the linear path are gradually decreased,and the turning path is reversed;and the subjective speech intelligibility changes trend and is opposite.