A1 - Kocan-Krawczyk, Anna
A1 - BraĆski, Adam
PB - Committee on Acoustics PAS, PAS Institute of Fundamental Technological Research, Polish Acoustical Society
N2 - The cuboidal room acoustics field is modelled with the Fourier method. A combination of uniform, impedance boundary conditions imposed on walls is assumed, and they are expressed by absorption coefficient
values. The absorption coefficient, in the full range of its values in the discrete form, is considered.
With above assumptions, the formula for a rough estimation of the cuboidal room acoustics is derived.
This approximate formula expresses the mean sound pressure level as a function of the absorption coefficient,
frequency, and volume of the room separately. It is derived based on the least-squares approximation
theory and it is a novelty in the cuboidal room acoustics.
Theoretical considerations are illustrated via numerical calculations performed for the 3D acoustic
problem. Quantitative results received with the help of the approximate formula may be a point of
reference to the numerical calculations.
KW - Fourier analysis
KW - room acoustics
KW - absorption coefficient
KW - boundary-value problem
KW - impedance boundary conditions
T1 - A Rough Estimation of Acoustics of the Cuboidal Room with Impedance Walls