The effect of geometric variable design configuration on the acoustic quality of the auditorium
Erick Teguh Leksono, Agus Budi Purnomo, Tulus Widiarso

Fakultas Teknik Sipil dan Perencanaan, Universitas Trisakti (Faculty of Civil Engineering and Planning, Trisakti University)

Abstract

Poor acoustics may impede communication and user experience, and yet traditional design approaches often ignore the varying acoustic needs. The present paper systematically reviews pertinent literature to assess how flexible geometric design options (e.g., adjustable surfaces, modular panels, or dynamic surfaces) affect relevant acoustic parameters (reverberation time, clarity, and sound distribution) in comparison with conventional empty auditorium designs. By following PRISMA, 45 experimental and simulation studies from Scopus, Web of Science, and PubMed (2020-2025) were analyzed. Results indicate that adjustable geometric design can improve C50 and reduce RT60 variation compared to static designs, particularly in multipurpose applications- however, implementation must consider cost and technical complexity. Therefore, conclusions and recommendations serve as an evidence-based guideline for architects and acoustical engineers involved in designing adaptive performance spaces in terms of real-time adjustment technologies and smart materials. On the other hand, new standards for acoustic evaluation of dynamic designs should also be created.

Keywords: Acoustic, Auditorium, Sound, Geometric, Surface.

Topic: Appearance/Shape of Livable Space