Toward Sustainable Learning Environments: The Role of Architectural Acoustic Conditions in University Learning Outcomes

This study examines how architectural acoustic environments of university buildings influence student learning outcomes from a sustainability perspective. In the context of sustainable campus development and indoor environmental quality (IEQ), acoustic conditions represent a critical yet often overlooked factor affecting cognitive performance and well-being. Through subjective questionnaires and objective assessments, we analyzed the acoustic experiences of 180 undergraduates, investigating the effects of varying noise levels (45 dBA, 60 dBA, and 75 dBA) and noise types (traffic and conversation) on learning outcomes during study sessions. This study aims to quantify acoustic sustainability in buildings of higher education and provides preliminary evidence that may inform sustainable campus planning and building design. Findings indicate that, within the experimental conditions of this study, regardless of the type of noise, higher noise levels are correlated with reduced subjective satisfaction and diminished learning outcomes. Specifically, traffic noise was found to have a stronger negative impact on memory, while conversational noise significantly impaired attention and reading ability. Additionally, an interaction effect was observed between noise type, noise level, as well as student gender, with male participants showing greater susceptibility to variations in noise level and type. These findings provide preliminary evidence for further improving sustainable campus planning and building design.