Psychophysiological Effects Of Outdoor Spatial Acoustic Landscape On Human Body

Soundscape science is a multidisciplinary new discipline that is accompanied by the development of society and the increasingly serious noise problem,which leads people to think and gradually emerges.It is the study of sound and environment,society and people.Relationship.As the auditory landscape,soundscape is an important factor in the environment,affecting people's perception of the environment.This is different from the traditional sense of acoustics.The former pays attention to human perception,while the latter pays more attention to the physical characteristics of sound,but currently The study of sound is concentrated in the latter.Therefore,the development of the study of the soundscape effect has practical significance.In addition,the outdoor open space of the campus is a place to meet the diverse needs of teachers and students and the surrounding residents.However,the space design is seriously considered in the part of the auditory dimension.Even in the design,only the visual stimulation is emphasized,and the effect of the soundscape on the human body is ignored.In order to design the campus space more comprehensively and reasonably,and to play the positive role of its space,to create a distinctive and pleasant campus landscape and explore the relationship between soundscape and people,this paper adopts a typical sampling method.The methods of fixed-point measurement,questionnaire interview,and sound-sensing perception surveyed the soundscape of Southwestern University of Finance and Economics,and determined the types of internal soundscapes,typical soundscapes,sound levels,etc.,and studied the current state of the soundscape of the campus outdoor space,and to explore The correlation between soundscape and people and landscape to determine the future thinking and design of soundscape in landscape design,and study the influence of soundscape on human psychology and physiology.The results are as follows:(1)According to the survey on the outdoor open space of the campus of Southwestern University of Finance and Economics,there are have 29 types of soundscapes,mainly humanistic sound(53.3%),followed by mechanical sound(33.3%),while natural sound such as bird call,wind and water sound only accounts for13.4%.The respondents thought that the overall sound environment quality of the campus was good,up to 76.8,18.3% in general,and 4.9% thought it was poor.(2)Among the sound level measurement and soundscape perception of different Spaces on campus,the sound level of campus leisure green space is the best(53.8db).The elements of soundscape are mainly bird sound,water sound,duck sound,insect sound and book sound.The transition space at the entrance has the worst sound level(66.40db),and the sound types mainly include the sound of motorcycle,bicycle,crowd noise and activity publicity.In the outdoor open space of the campus,the sound level with good quality is in the order of leisure green space,> teaching administrative space,> life service space,> square distribution space,> linear traffic space,> entrance transition space.(3)Both natural and human voices can have a positive impact on the human body,making the participant's skin electrical level SCL at a lower level,while mechanical sounds will increase the participant's skin level.In addition,in the wave physiology experiment,natural sound can increase the alpha wave of the participants,and the beta wave is reduced.The human voice also has this trend,but it is not significant in the analysis of variance.The mechanical sound is opposite to the natural sound result,which reduces the alpha wave of the participant and increases the beta wave,which has a negative effect.(4)In the psychoacoustic psychological perception test,the natural sound gives the participants a better feeling and perception,and the mean value is between 1.3 and 1.6.The human voice is considered by the participants to be a dynamic and interesting sound scene,and the overall is more comfortable.The mean value of the SD sound of mechanical sound is basically negative,and only the vitality value reaches 0.17.In the psychological emotion test,most of the students' emotional TMD values decreased compared with before the test,the vitality value(pleasure degree,positivity,etc.)showed an upward trend,while the negative emotions(anger,sadness,anxiety)decreased.