Sound Reflection from Overhead Stage Canopies Depending on Ceiling Modification

• Autorzy: Kamisiński T. , Szeląg A. , Rubacha J.
• Języki publikacji: EN

Abstrakty

EN

Reflecting structures placed over the stage in auditoria and concert halls should provide sound reflection in a way that enhances sound emission from the stage without causing acoustic defects in the interior. Model studies conducted by the authors were used to determine the relative level of sound reflection by reflecting structures as a function of frequency for a number of geometric configurations and materials. Analysis of the results allowed drawing conclusions about the effect of modifications of the ceiling over the reflecting panels on the quality of the sound reflected from them. It was shown that modification of the ceiling over the reflecting panels by employing highly sound absorbing materials significantly improved the characteristics of the reflected sound. Also, certain configurations of elements located in the space under the ceiling should be avoided, as the experiments indicated the occurrence of adverse acoustic effects.

Słowa kluczowe

EN

sound reflection; room acoustics; reflecting structures

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2012
• Tom: Vol. 37, No. 2
• Strony: 213--218
• Opis fizyczny: Bibliogr. 8 poz., wykr.

Twórcy

autor

Kamisiński T.

autor

Szeląg A.

autor

Rubacha J.

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

Bibliografia

• 1. Kamisiński T., Polaczek A., Rubacha J. (2010), Measurements of parameters of sound reflecting screens, Mechanics and Control, 29, 4, 174-178.
• 2. Kamisiński T. (2010), Acoustic Simulation and Experimental Studies of Theatres and Concert Halls, Acta Physica Polonica A, 118, 1, 78-82.
• 3. Kulowski A. (2007), Acoustics of Halls. Design recommendations for architects, [in Polish: Akustyka sal. Zalecenia projektowe dla architektów], Gdańsk University of Technology Press, Gdańsk.
• 4. Kulowski A. (2010), Acoustics of Concert Hall at Academy of Music in Gdansk, Project and Realization, Acta Physica Polonica A, 118, 1, 106-109.
• 5. Polaczek A., Rubacha J. (2010), The shape and the size of reflector panels forming a canopy, 13th International Symposium of Students and Young Mechanical Engineers "Advances in Chemical and Mechanical Engineering", pp. 312-317, Gdańsk.
• 6. 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.
• 7. Skälevik M. (2006), Low Frequency Limits of Reflector arrays, Institute of Acoustics IOA conference on Auditorium Acoustics, Copenhagen.
• 8. Skälevik M. (2007), Low frequency limits of reflector arrays, ICA 07 proceedings, Madrid.