Research On Evaluation And Construction Of Soundscape Perception Based On Nanchang People's Park

The rapid development of China's urbanization process has brought serious noise pollution which affects people's physical and mental health.It is the more ecological means to solve the noise problem from the perspective of landscape.Urban parks are important green public open space in the city and have always been the object of research.Therefore,this paper will analyze the acoustic environment characteristics and perception rules of urban parks with Humanism,in order to provide a reference for the future soundscape research,and provide a theoretical basis for the urban parks to create a more comfortable acoustic environment.The main research process of this paper is divided into three stages: The first stage investigates people's sense of sound and expectation,clears the significance of research and summarizes the research methods,theoretical basis and ideas of this paper by learning and analyzing the soundscape research at home and abroad for the purpose of the experiment was carried out smoothly owing to these theoretical preparations and guidelines.In the second stage,Nanchang People's Park was used as the research space,and outdoor questionnaires and interviews were conducted to collect the subjective perception data of the soundscape,and the physical date of the soundscape in urban park were measured under the specific condition.Analyzing subjective and objective data reflects the loudness,pleasure,activity,comfort,annoyance of urban park soundscapes from the sound pressure level of physical factors,the subjective feelings and loudness of psychological factors,the spatial environment of contextual factors,and the physiological social demographic characteristics.These date were used to analyze the interaction and influence between the three components of the human-sound-environment in the soundscape,study the characteristics and laws of the soundscape perception.The third phase is based on the results of this research and the theoretical basis of noise control,soundscape construction and protection to optimize and construct the soundscape of Nanchang People's Park.The research results show that the Nanchang People's Park basically meets the urban 0-class acoustic environment quality standard during the measurement period from 11:00 to 14:30.During the questionnaire,the sounds that are generally perceived in the park and subjectively loud are conversations,children's playful sounds,birds sounds and the sound of the music.The overall soundscape experience is mainly active,cheerful,comfortable,natural,almost no sharp,slightly noisy,but has little effect on the whole.Although the measured sound pressure level does not meet the standard requirements,it is basically acceptable to the public.Therefore,the following soundscape perception laws are also obtained:(1)The visual beauty and the soundscape satisfaction have a positive correlation with the interoperability of five senses.(2)Human voices such as conversations and children's playful sounds will make people feel energetic,pleasant and interesting.Natural sounds have the effect of soothing emotions and masking noise.Among them,water sound gives the most interesting perception.Mechanical sound is more related to noisy and unpleasant.(3)Women are more sensitive to children's playful sounds.The elderly have lower perception of sound loudness and are more sensitive to the perception of conversations.(4)When the equivalent continuous A sound level is less than 60 dB,people's feelings about the soundscape are mainly related to people's subjective emotions and needs.(5)The environment's space determines its main function and soundscape combination.The open space is often crowded.The loudness of perception is mostly the sound of conversation and the sound of children playing,which makes people feel happy,energetic and interesting.The space with good closeness makes people more sensitive to sound and susceptible to noise.Between the open and closed space environment,the richness of activities leads to the diversity of soundscapes and many people feel pleasure and vitality.(6)The environment covered with large areas of greenery and dominated by natural sound plays a healthy and medical role.(7)People will be affected by the natural attributes of the overall environment,resulting in the effect that the whole is greater than the part in psychology.