Title :
Numerical estimation of acoustic properties in enclosures of simple shape
Author :
Shanin, Andrey V. ; Shabalina, Elena D.
Author_Institution :
Dept. of Phys., Moscow State Univ., Moscow
Abstract :
A 2-D model of a rectangular room with an open window is studied. In such a room the acoustic field is not diffuse even for high frequencies. Instead, it displays modal properties in the whole frequency band. For high frequency some modes have a high Q-factor, and thus the solution of a harmonic excitation problem has a rapid and unpredictable dependence on frequency. To suppress this dependence, a procedure of averaging in the frequency domain is proposed. An algorithm of calculation of reverberation time is described.
Keywords :
acoustic wave propagation; architectural acoustics; numerical analysis; reverberation; acoustic field; acoustic property numerical estimation; harmonic excitation problem; modal properties; open window; rectangular room 2D model; reverberation; simple enclosure acoustical propertyies; Acoustic diffraction; Acoustical engineering; Displays; Frequency domain analysis; Hydrogen; Physics; Q factor; Reverberation; Shape; State estimation;
Conference_Titel :
Days on Diffraction, 2007 International Conference
Conference_Location :
St. Petersburg
Print_ISBN :
5-9651-0118-X
DOI :
10.1109/DD.2007.4532002
