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Evaluation of the Acoustic Performance of Classrooms in Algerian Teaching Schools

Authors: Bouttout Abdelouahab, Amara Mohamed, Djakabe Saad, Remram Youcef

Abstract:

This paper presents the results of an evaluation of acoustic comfort such as background noise and reverberation time in teaching rooms in Height National School of Civil Engineering, Algeria. Four teaching rooms are evaluated: conference room, two classroom and amphitheatre. The acoustic quality of the classrooms has been analyzed based on measurements of sound pressure level inside room and reverberations time. The measurement results show that impulse decays dependent on the position of the microphone inside room and the background noise is with agreement of National Official Journal of Algeria published in July 1993. Therefore there exists a discrepancy between the obtained reverberation time value and recommended reverberation time in some classrooms. Three methods have been proposed to reduce the reverberation time values in such room. We developed a program with FORTRAN 6.0 language based on the absorption acoustic values of the Technical Document Regulation (DTR C3.1.1). The important results of this paper can be used to regulate the construction and execute the acoustic rehabilitations of teaching room in Algeria, especially the classrooms of the pupils in primary and secondary schools.

Keywords: Room acoustic, reverberation time, background noise, absorptions materials.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1088814

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References:


[1] Sabine WC. Collected papers on acoustics. New York: Dover Publisher; 1964.
[2] Eyring CF. Reverberation in ‘‘dead’’ rooms. J Acoust Soc Am 1930;1(2):217–41.
[3] A. Billon , J. Picaut , A. Sakout. Prediction of the reverberation time in high bsorbent room using a modified-diffusion model. Applied Acoustics 69 (2008) 68–74.
[4] Carolina Reich Marcon Passero, Paulo Henrique Trombetta Zannin. Statistical comparison of reverberation times measured by the integrated impulse response and interrupted noise methods, computationally simulated with ODEON software, and calculated by Sabine, Eyring and Arau-Puchades’ formulas. Applied Acoustics 71 (2010) 1204–1210.
[5] Arianna Astolfi, Vincenzo Corrado, Alessia Griginis. Comparison between measured and calculated parameters for the acoustical characterization of small classrooms. Applied Acoustics 69 (2008) 966–976.
[6] S.K. Tang. Speech related acoustical parameters in classrooms and their relationships. Applied Acoustics 69 (2008) 1318–1331.
[7] Carl C. Crandell, Joseph J. Smaldino. Classroom acoustics for children with normal hearing and with hearing impairment. Language, speech, and hearing services in schools. Vol. 31, 362–370. October 2000.
[8] Chris DiMarino, Dillon Fuerth, Devin Gignac, Adam Lunardi, Colin Novak, Robert Pikul and Anthony Simone. Acoustic Enhancement of Proposed Grand Lecture Hall using Computer Simulation. Canadian Acoustics. 43 - Vol. 39 No. 1 (2011).
[9] DTR C3.1.1, Isolation acoustique des parois aux bruits aériens. Règles de calcul. Document technique réglementaire. Centre National d’Etudes et de Recherche Intégrées du Bâtiments (CNERIB) 2004. Ministre de l’Habitat et de l’Urbanisme (MHU).
[10] International organization for standardization. ISO 3382-1: acoustics measurement of room acoustic parameters. Part 1: performance spaces. 2009.
[11] International organization for standardization. ISO 3382-2: acoustics measurement of room acoustic parameters. Part 2: reverberation time in ordinary rooms. 2009.
[12] Loic Hamayon. Comprendre simplement l’acoustique des bâtiments. Edition: le moniteur 2008.
[13] ZANNIN, P. H. T, Zwirtes, D. P. Z. Evaluation of the acoustic performance of classrooms in public schools. Applied Acoustics, vol. 70, p. 626-635, 2009.
[14] Mathias MEISSER. La pratique de l’acoustique dans le bâtiment. Edition Eyrolles. 1974.