Revealing factors influencing classroom noise in the universities teaching and learning environment: A design of experiments approach

This study measured noise levels in Saudi university laboratories and classrooms to determine whether they meet international standards. The study was conducted by highlighting primary noise components and their combined influence. A design of experiments (DoE) approach was employed for nine noise components in university classrooms and laboratories. In total, 1024 readings were obtained from Saudi university classrooms and laboratories using a sound-level meter. Using analysis of variance (ANOVA), nine noise variables were evaluated for their effects both independently and through mutual interactions. The study found that the noise level in classrooms and laboratories was 50-70 dBA, which is above the tolerable level (40-50 dBA). Although the noise variables analyzed had minor primary impacts, the study revealed eleven statisticallysignificant interactive effects, indicating the variables' combined effects for classroom and laboratory noise. This study fills a research gap on classroom noise in Saudi university settings, equipping educational leaders with the understanding needed to apply noise-abatement techniques, which will improve teaching and learning.

Automated summary

This study aimed to assess the noise levels in Saudi university laboratories and classrooms and determine their compliance with international standards. A design of experiments approach was used to evaluate nine noise components in university settings. The results showed that the noise level exceeded the tolerable limit in classrooms and laboratories. Additionally, the study revealed significant interactive effects of noise variables, highlighting the combined impact of these variables on classroom and laboratory noise.