In situ Measurement Methods for Characterising Sound Diffusion

Autor:	N. Brousse, I. Schmich
Rok vydání:	2011
Předmět:	In situ Reverberation Diffusion (acoustics) Measurement method Acoustics and Ultrasonics Scale (ratio) Field (physics) Computer science Mechanical Engineering Acoustics Building and Construction Thermal diffusivity Sensitivity (control systems) Simulation
Zdroj:	Building Acoustics. 18:17-35
ISSN:	2059-8025 1351-010X
Popis:	Two methods have been investigated to define a new way of measuring diffusion in situ. The first one is based on the measurement of a mono-dimensional reverberation time between two parallel plates and gives an evaluation of a scattering coefficient. This field method has been tested through computer simulation and shows high sensitivity to experimental conditions. The experimental set-up has been realized and laboratory measurements conducted. The second method is focused on the scale of a concert hall and proposes new parameters which could lead to a new global diffusivity index. It has been simulated with a computer model with various diffuser arrangements. These two methods are complementary and if further developed could lead to efficient tools for evaluating and optimizing diffusion in real concert halls.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a40348491141d2623a32a771ed48a37a https://doi.org/10.1260/1351-010x.18.1-2.17 Zobrazit plný text záznamu