A Rough Estimation of Acoustics of the Cuboidal Room with Impedance Walls

• Autorzy: Kocan-Krawczyk A. , Brański A.

Identyfikatory

DOI

10.24425/122370

• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

Fourier analysis; room acoustics; absorption coefficient; boundary-value problem; impedance boundary conditions

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2018
• Tom: Vol. 43, No. 2
• Strony: 227--233
• Opis fizyczny: Bibliogr. 32 poz., rys., tab., wykr.

Twórcy

autor

Kocan-Krawczyk A.

• The Faculty of Electrical and Computer Engineering, Department of Acoustics, Rzeszów University of Technology, Powstańców Warszawy 12, 35-959 Rzeszów, Poland

autor

Brański A.

• The Faculty of Electrical and Computer Engineering, Department of Acoustics, Rzeszów University of Technology, Powstańców Warszawy 12, 35-959 Rzeszów, Poland

Bibliografia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).