PL EN


Preferences help
enabled [disable] Abstract
Number of results
2010 | 118 | 1 | 62-65
Article title

The Influence of Sound Source Directivity on Acoustics Parameters Distribution in Kraków Opera House

Content
Title variants
Languages of publication
EN
Abstracts
EN
Determining of Kraków Opera House's basic acoustics parameters by using numerical simulations is presented in the paper. Parameters have been obtained by using numerical simulation methods. Sound sources have been created by means of FEA, however acoustic field distributions have been analysed by geometrical methods. Apart from the room parameters definition, it is necessary to determine sound source parameters like acoustic power level and directivity pattern. In the simplest case, the sound source can be assumed as omni-directional point source. However it does not reflect most real-live sources precisely. When the literature and databases do not contain any information about the sound source directivity pattern, it can be obtained numerically using FEA. First, the sound source model is created, and then results from its spherical boundary are used to define the source in a program based on geometrical methods. Here have been analysed several distributions of acoustic parameters like: Direct Energy, Sound Pressure Level (SPL), Clarity index (C80) etc. The results indicate that influence of sound source directivity on acoustics parameters changes is essential.
Keywords
EN
Publisher

Year
Volume
118
Issue
1
Pages
62-65
Physical description
Dates
published
2010-07
Contributors
author
  • Department of Mechanics and Vibroacoustics, AGH - University of Science and Technology, al. Mickiewicza 30, 30-059 Kraków, Poland
  • Department of Mechanics and Vibroacoustics, AGH - University of Science and Technology, al. Mickiewicza 30, 30-059 Kraków, Poland
author
  • Department of Mechanics and Vibroacoustics, AGH - University of Science and Technology, al. Mickiewicza 30, 30-059 Kraków, Poland
References
  • 1. H. Kuttruff, Room Acoustics, Spon Press, London 2000
  • 2. N.H. Fletcher, Rep. Prog. Phys. 62, 723 (1999)
  • 3. A. Gołaś, K. Suder-Dębska, Archives of Acoustics, Vol. 34 no. 3, 273 (2009)
  • 4. EASE 4.1 Users Manual, Acoustic Design Ahnert, Berlin
  • 5. L. Rayleigh, The London, Edinburgh and Dublin Philosophical Magazine and Journal of Science 5, (1890)
  • 6. R. Perrin, G.M. Swallowe, Rayleigh's Bell Model Revisited. Stockholm Music Acoustics Conference, Stockholm, Sweden 2003
  • 7. A. Gołaś, R. Filipek, Archives of Acoustics, Vol. 34 no. 4 (2009)
  • 8. R. Filipek, J. Wiciak, The European Physical Journal - Special Topics 154, 57 (2008)
  • 9. L. Wang, M. Vigeant, Applied Acoustics 69, (2008)
  • 10. D. Davis, E. Patronis, Sound System Engineering, Elsevier Inc., Oxford 2006
  • 11. Theory Reference (Release 11.0 Documentation for ANSYS)
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv118n114kz
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.