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The Characteristic of Sound Reflections from Curved Reflective Panels

Treść / Zawartość
Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The paper presents the verification of a solution to the narrow sound frequency range problem of flat reflective panels. The analytical, numerical and experimental studies concerned flat panels, panels with curved edges and also semicircular elements. There were compared the characteristics of sound reflected from the studied elements in order to verify which panel will provide effective sound reflection and also scattering in the required band of higher frequencies, i.e. above the upper limit frequency. Based on the conducted analyzes, it was found that among some presented solutions to narrow sound frequency range problem, the array composed of panels with curved edges is the most preferred one. Nevertheless, its reflection characteristic does not meet all of the requirements, therefore, it is necessary to search for another solution of canopy which is effective over a wide frequency range.
Rocznik
Strony
549--558
Opis fizyczny
Bibliogr. 20 poz., fot., rys., wykr.
Twórcy
autor
  • Tadeusz Kościuszko Cracow University of Technology Warszawska 24, 31-155 Kraków, Poland
  • AGH University of Science and Technology Al. A. Mickiewicza 30, 30-059 Kraków, Poland
autor
  • AGH University of Science and Technology Al. A. Mickiewicza 30, 30-059 Kraków, Poland
autor
  • AGH University of Science and Technology Al. A. Mickiewicza 30, 30-059 Kraków, Poland
autor
  • AGH University of Science and Technology Al. A. Mickiewicza 30, 30-059 Kraków, Poland
Bibliografia
  • 1. ANDO Y. (1985), Concert hall acoustics, Springer Verlag, New York.
  • 2. BATKO W., FELIS J., FLACH A., KAMISINSKI T., GIESKO T., ZBROWSKI Z. (2008), A concept of an actuator for the positioning measurement system, in an anechoic room., Archives of Acoustics, 33, 2, 201-208.
  • 3. BERANEK L. (1996), How they sound, concert and opera halls, Acoustical Society of America, Woodbury, New York.
  • 4. BETHE H. (1944), Theory of diffraction, by small holes, Phys. Rev., 66, 163-182.
  • 5. Cox T.J., D’ANTONIO P. (2004), Acoustic absorbers and diffuser, 2nd edition, Taylor & Francis, London.
  • 6. CREMER L. (1989), Early reflections in some modem concert halls, J. Acoust. Soc. Amer., 85, 1213-25.
  • 7. FELIS J., KAMISIŃSKI T., FLACH A. (2012), Testing of a Device for Positioning Measuring Microphones in Anechoic and Reverberation Chambers, Archives of Acoustics, 37, 2, 245-250.
  • 8. KAMISIŃSKI T., SZELĄG A., RUBACHA J. (2012a), Sound reflection from, overhead stage canopies depending on. ceiling modification, Archive of Acoustics, 37, 213-218.
  • 9. KAMISIŃSKI T., BRAWATA K., PILCH A., RUBACHA J., ZASTAWNIK M. (2012b), Test Signal Selection for Determining the Sound Scattering Coefficient in a Reverberation Chamber, Archives of Acoustics, 37, 4, 405- 409.
  • 10. KAMISIŃSKI T., POLACZEK A., RUBACHA J. (2010), Measurement of parameters of sound reflecting screens, Mechanics and Control, 29, 4, 174-178.
  • 11. KAMISIŃSKI T., BURKOT M., RUBACHA J., BRAWATA K. (2009), Study of the effect of the orchestra pit on. the acoustics of the Krakow Opera Hall, Archives of Acoustics, 34, 4, 481-490.
  • 12. RATHSAM J., WANG L. (2010), Planar reflector panels with, convex edge, Acta Acustica United with Acustica, 96, 5, 905-913.
  • 13. RINDEL J.H. (1990), Attenuation of sound reflections from an array of reflectors, 29th Conference on Acoustics, Strbske Pleso.
  • 14. RINDEL J.H. (1986), Attenuation of sound reflections due to diffraction, Proceedings of Nordic Acoustical Meeting, pp. 257-260, Denmark.
  • 15. SCHROEDER M.R. (1979), Binaural dissimilarity and optimum, ceilings for concert halls: More lateral sound diffusion, J. Acoust. Soc. Amer., 65, 958-963.
  • 16. SKALEVIK M. (2007), Low frequency limits of reflector arrays, Retrieved February 12th, 2014, from www.akutek.info.
  • 17. SKALEVIK M. (2006), Orchestra canopy arrays - some significant features, Joint Baltic-Nordic Acoustics Meeting, Sweden.
  • 18. STRUTT J.W. (Lord Rayleigh) (1897), On. the passage of waves through, apertures in plane screens, and allied problems, Philos. Mag., 43, 259-272.
  • 19. SZELĄG A. (2014), Shaping the first sound reflections in rooms of qualified acoustics, PhD thesis.
  • 20. SZELĄG A., RUBACHA J., KAMISIŃSKI T. (2013), Narrow sound frequency range problem, of reflector arrays, Acta Physica Polonica, 123, 6, 1059-1063.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-3d4fcb37-8ee2-4b71-9ecd-9df1a77be7b3
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