Scale Model Investigations of Diffuser Application Strategies for Acoustical Design of Performance Venues

Title
Scale Model Investigations of Diffuser Application Strategies for Acoustical Design of Performance Venues
Author
김재호
Keywords
ROOM ACOUSTICS; SOUND FIELDS; SCATTERING; COEFFICIENTS; SURFACES
Issue Date
2011-09
Publisher
S HIRZEL VERLAG, POSTFACH 10 10 61, D-70 009 STUTTGART, GERMANY
Citation
ACTA ACUSTICA UNITED WITH ACUSTICA, Vol.97, No.5 [2011], p791-799
Abstract
This work investigates the effects of diffusive surfaces on concert hall acoustics using scale models with regard to hall shape and diffuser location. Two simple 1:50 scale models (shoebox and fan-shaped) were produced to measure the RT and SPL, which were decreased by wall diffusers in both hall shapes. In the shoebox hall, SPL was increased especially in the frontal area but was decreased in the rear area due to redirection of the second reflections by the opposite lateral walls, whereas SPL was decreased in both the frontal and rear area in the fan-shaped hall. For in-depth investigation of diffuser location and profile, three shoebox model halls were reproduced: a 1:50 symphony hall, a 1:25 chamber hall and a 1:25 theater. Minimal reductions in RT and LL and decreased spatial deviation in acoustical parameters were established as criteria to determine the effective diffuser location. The halves of the lateral walls closest to the stage were found to be the most effective areas for diffuser installation. Additionally, large and sparse diffuser profiles usually provided better acoustical results.
URI
http://www.ingentaconnect.com/content/dav/aaua/2011/00000097/00000005/art00009
ISSN
1610-1928
DOI
10.3813/AAA.918459
Appears in Collections:
RESEARCH INSTITUTE[S](부설연구소) > RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE(산업과학연구소) > Articles
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