DIFFUSER DESIGN FOR LATERAL WALLS IN A CONCERT HALL USING SCALE MODELS

Title
DIFFUSER DESIGN FOR LATERAL WALLS IN A CONCERT HALL USING SCALE MODELS
Authors
전진용
Issue Date
2015-07
Publisher
The International Institute of Acoustics and Vibration The 22th International Congress of Sound and Vibration
Citation
The 22th International Congress of Sound and Vibration, Page. 1-5
Abstract
Surface diffusivity of lateral walls affects the distribution of a sound field on concert hall acoustics. The design elements of diffusers in concert halls are diffuser’s geometrical shape, structural height, surface coverage, and installation position. Scattering and diffusion coefficients of the diffusers were measured in a 1:10 reverberation chamber. The diffusers were applied to scale model concert halls with different design elements of diffusers. Acoustical parameters such as RT, EDT, C80, and G were calculated from the impulse responses. In addition, the numbers peaks (Np) within -20 dB from the amplitude of direct sound were calculated to evaluate the diffuseness in the halls. As results, diffusers caused decrease of RT, EDT and G, and contributed to decrease of relative standard deviations (RSD) of the parameters. It was also found that the diffusive lateral walls close to the stage area are effective in increasing Np.
URI
http://www.iiav.org/archives_icsv_last/2015_icsv22/content/papers/papers/full_paper_1165_20150327015931904.pdfhttp://hdl.handle.net/20.500.11754/26180
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ARCHITECTURAL ENGINEERING(건축공학부) > Articles
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