Measurements of the Sound Absorption Coefficient of Auditorium Seats for Various Geometries of the Samples

• Autorzy: Rubacha J. , Pilch A. , Zastawnik M.
• Języki publikacji: EN

Abstrakty

EN

This paper presents the results of measurements of the sound absorption coefficient of auditorium seats carried out in the laboratory using two methods. In the first one, small blocks of seats in various arrangements were studied in a reverberation chamber to determine the absorption coefficient of an auditorium of infinite dimensions. The results were compared to the values of the absorption coefficient measured using the second method, which involved samples enclosed within a frame screening the side surfaces of other auditorium blocks. The results of both methods allowed for the assessment of the sound absorption coefficient of an auditorium of any dimensions while taking into account the sound absorption by the side surfaces. The method developed by the authors will simplify the currently known measurement procedures.

Słowa kluczowe

EN

sound absorption; room acoustics; modelling of acoustic parameters

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2012
• Tom: Vol. 37, No. 4
• Strony: 483--488
• Opis fizyczny: Bibliogr. 8 poz., wykr.

Twórcy

autor

Rubacha J.

autor

Pilch A.

autor

Zastawnik M.

• AGH University of Science and Technology al. A. Mickiewicza 30, 30-059 Kraków, Poland,

Bibliografia

• 1. Beranek L.L. (1969), Audience and chair absorption in large halls. II, J. Acoust. Soc. Am., 45, 1, 13-19.
• 2. Bradley J.S. (1992), Predicting theater chair absorption from reverberation chamber measurements, J. Acoust. Soc. Am., 91, 3, 1514-1524.
• 3. Bradley J.S. (1996), The sound absorption of occupied auditorium seating, J. Acoust. Soc. Am., 99, 2, 990-995.
• 4. DaviesW.J., Orlowski R.J., Lam Y.W. (1994), Measuring auditorium seat absorption, J. Acoust. Soc. Am., 96, 2, 879-888.
• 5. Kamisiński T. (2010), Acoustic Simulation and Experimental Studies of Theatres and Concert Halls, Acta Physica Polonica A, 118, 1, 78-82.
• 6. Kamisiński T., Brawata K., Pilch A., Rubacha J., Zastawnik M (2012), Sound Diffusers with Fabric Covering, Archives of Acoustics, 37, 3, 317-322.
• 7. Pilch A., Kamisiński T. (2011), The Effect of Geometrical and Material Modification of Sound Diffusers on Their Acoustic Parameters, Archives of Acoustics, 36, 4, 955-966.
• 8. ISO 354:2003 Acoustics - Measurement of sound absorption in a reverberation room.