The relationship between the spatial and temporal patterns of urban noise dispersion and social perceptions

Urban noise, exacerbated by rapid urbanization, has prompted government efforts in noise mapping and acoustic zoning, utilizing objective noise data for rational urban planning. At the same time, subjective noise assessments hold significant value, complementing objective measurements by capturing individuals' perceptions and emotional responses to noise. This study analyzes 13,504 noise complaints from a government platform in Hangzhou, China, using Spreadsheet Software and GIS software to explore the spatial and temporal distribution of noise. Key findings include: 1) Temporal factors significantly influence noise complaints, with peaks in spring, autumn, and specific daily intervals (8-11 a.m., 2-4 p.m., 10 p.m.-1 a.m.); weekend complaints exhibit smoother variation; 2) Population and building density affect spatial distribution, with population density strongly correlating to Natural Noise; 3) Noise complaints correlate with POI (point of interest) diversity, with higher POI density leading to more complaints, particularly in Exercise and Fitness, and less so in Scenic Spots; 4) Different streets in Hangzhou exhibit unique noise impacts, highlighting the need for targeted noise mitigation strategies through a "people-Sub-district-government" model.