Acoustic comfort in educational buildings: An integrative review and new directions for future research

The poor acoustic quality in educational buildings is a prevalent issue that can significantly influence teachers' and students' health, comfort, and performance. An integrative literature study was conducted to understand the current research on acoustic quality in educational buildings. The study aimed to identify (1) common research topics related to acoustics in educational buildings, (2) methods that were used to collect and analyze data in previous relevant studies, and (3) knowledge gaps that need to be addressed to evaluate and enhance acoustic quality in educational buildings. In total, 206 relevant studies collected from the Web of Science database were reviewed and analyzed. Three research topics emerged based on the co-occurrence links between terms in the abstract and title of these papers: acoustic conditions and improvements in educational buildings, impacts of acoustic quality in educational buildings on students' performance, and impacts of acoustic quality on teachers' and students’ health. Four commonly employed data collection methods and three analysis methods were identified, and their advantages and disadvantages were discussed. Gaps in the research topics, methods, and ways of improvement were discussed to highlight directions for future research in the acoustics field. Two individually controlled acoustic improvement methods and the interaction effects between acoustic quality and other environmental factors were suggested to be considered for future studies. Furthermore, this study advocated incorporating electroencephalography (EEG) and machine learning techniques in future research to gain deeper insights into the effects of acoustic quality on occupants in educational buildings.