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Effect of Stage Volume Ratio on Audience Acoustics in Concert Halls

Jin Yong Jeon, Rosa Seo and Hyun In Jo
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Jin Yong Jeon: Department of Architectural Engineering, Hanyang University, Seoul 04763, Korea
Rosa Seo: Department of Architectural Engineering, Hanyang University, Seoul 04763, Korea
Hyun In Jo: Department of Architectural Engineering, Hanyang University, Seoul 04763, Korea

Sustainability, 2020, vol. 12, issue 4, 1-19

Abstract: This report proposes the stage volume ratio (V o /V) as an acoustic design factor for concert halls and presents an investigation of the dependence of the acoustic parameters of an auditorium on the stage volume through computer simulation. Firstly, the ratio of the stage volume to the total volume of a concert hall was defined as V o /V through case studies of existing concert halls. It was verified using a simple model that the stage acoustic parameter ST Early and audience acoustic parameters G and C80 decreased, whereas, the reverberation time and early decay time increased with increasing V o /V. Secondly, a computer simulation was performed for nine existing concert halls, while changing V o /V from −20% to 30%. The room acoustic parameters exhibited the same patterns as suggested by the simple model. V o /V significantly affected the bass ratio and bass index. A comparison of the effects of V o /V and the sound absorption coefficient in nine concert halls revealed that V o /V contributed approximately 15% to the reverberation and affected the bass characteristics more substantially. Thus, V o /V is a critical design factor when determining the warmth of the audience acoustics. The study results could be used as a basis for acoustic design in the future.

Keywords: stage volume ratio; acoustical parameters; audience acoustics; computer simulation (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2020
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