Understanding the Nexus Between Anxiety and Acoustic Perception in University Students: A Quasi-Experimental Study During Pandemic-Induced Lockdown.

Anxiety significantly impacts the well-being of university students. This study employs the pandemic-induced lockdown as a quasi-experimental situation to examine university students' perceptions of the acoustic environment and anxiety levels, further investigating the potential correlation between these two variables. An online questionnaire survey was conducted with 250 respondents from seven cities, across nine universities in China, encompassing both high- and low-risk areas concerning the pandemic. In addition, acoustic assessments at three selected sites on the campus were conducted. The results indicate that respondents reported an increase in the perception of indoor noise, particularly voices and instrumental sounds. Concurrently, the sound pressure levels during lockdown were generally lower, resulting in a quieter outdoor acoustic environment. A total of 54% of the respondents reported experiencing anxiety symptoms during this period, and those perceiving changes in the acoustic environment exhibiting higher levels of anxiety. A significant correlation was observed between the acoustic perception and anxiety levels. Overall acoustic satisfaction was negatively correlated with anxiety levels, with this correlation being more pronounced in groups prone to anxiety, such as women. Furthermore, the loudness of the most prominently perceived sound was positively correlated with anxiety levels, with this correlation being stronger in groups less prone to anxiety, such as men. Respondents showed a high level of tolerance for social/communal sounds, voices and instrumental sounds. Conversely, natural and electromechanical sounds were correlated with higher anxiety levels. These findings provide valuable insights for mitigating anxiety through the manipulation of the acoustic environment.