Impact of Reverberation Time and Indoor Ambient Noise Levels on Acoustic Comfort in School Dining Halls

Synopsis

This presentation explores the impact of acoustic conditions on comfort in school dining halls, with a focus on inclusive design for children with sensory needs. While classroom acoustics is well-researched, dining halls are under researched, despite their importance as social and multi-use learning spaces and the importance of good acoustic design for inclusion, emotional regulation and psychological safety.

The study involved acoustic measurements and surveys across five schools, engaging over 300 students and over 9,500 teachers via an online survey. Students reported on perceived loudness, annoyance, conversational ease, and emotional responses. Results showed a strong correlation between shorter reverberation times and more positive experiences, including less annoyance due to noise, and increased ability to enjoy their lunch.

The research also explored the impact of acoustic capacity as well as controlling low frequency reverberation time. Based on student feedback, the study recommends revising BB93 standards to a lower reverberation time range of 0.5–0.8 seconds for dining halls (depending on room volume), to better support inclusive listening environments and improve outcomes for children with sensory needs. The criteria are achievable in practice with good acoustic design.

This research demonstrates the value of co-production in acoustic design and advocates for evidence-based standards that reflect the lived experience of students. It contributes to the growing conversation around designing educational spaces that promote wellbeing, inclusion, psychological safety and equitable access to communication.