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Interior surface treatment guidelines for classrooms according to the acoustical performance criteria
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 Title & Authors
Interior surface treatment guidelines for classrooms according to the acoustical performance criteria
Ryu, Da-Jung; Park, Chan-Jae; Haan, Chan-Hoon;
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There are many results in which acoustical conditions of a classroom play an important role for studying effects and academic achievement of students. However, there are very few guidelines or design proposals which could make appropriate acoustic environment when classrooms are built or renovated. The present study suggests various design proposals satisfying acoustic standards of classrooms based on theoretical calculation and acoustic field experiments. At first, minimum area of sound absorption was calculated which is required to satisfy the acoustic standard for domestic middle and high schools. Also, room acoustic measurements were carried out in order to investigate the acoustic performance of an existing classroom by changing interior finishing materials on ceiling and rear walls. As a result, it was revealed that reverberation time standard below 0.8 s can be acquired even if there is no sound absorption on ceiling which is a general practice executed in Korea. Specially, it was found that if partial area of ceiling would be treated as reflective with the ratio of sound absorption and reflection as 2:1, almost similar acoustic parameters of , , RASTI (Rapid Speech Transmission Index) and higher sound levels could be acquired in comparison with the case of entire sound absorption on ceiling.
Classroom;Interior acoustic criteria;Sound absorptive area;Reverberation time;Sound pressure level;Speech intelligibility;Rapid speech transmission index;
 Cited by
ANSI/ASA S12.60, Acoustical Performance Criteria, Design Requirements, and Guidelines for Schools - Part 1: Permanent Schools, American National Standard (2010).

Building Bulletin 93, Acoustic Design of Schools ; The Department for Education and Skills (2011).

C. J. Park, D. J. Ryu, J. Y. Kyoung, and C. H. Haan, "Analysis of the acoustic performance of classrooms in Korea" (in Korean), J. Acoust. Soc. Kr. 33, 317-326 (2014).

J. H. Jung, "Design criteria for the implementation of good classroom acoustics research and improvement" (in Korean), Fire protection technology 42, 17-25 (2007).

C. J. Park, Establishment of the acoustical performance criteria for middle and high school classrooms (in Korean), (Ph.D. thesis, Chungbuk National University, 2014).

M. Long, Architectural Acoustics (Academic Press, United States, 2005), pp. 607.

S. R. Bistafa and J. S. Bradley, "Predicting reverberation times in a simulated classroom," J. Acoust. Soc. Am. 108, 1721-1731 (2000). crossref(new window)

H. Sato and J.S. Bradley, "Evaluation of acoustical conditions for speech communication in working elementary school classrooms," J. Acoust. Soc. Am., 123, 2064-2077(2008). crossref(new window)

C. J. Park and C. H. Haan, "Effect of the inter-aural level differences on the speech intelligibility depending on the room absorption in classrooms" (in Korean), J. Acoust. Soc. Kr. 32, 335-345 (2013). crossref(new window)

D. U. Jeong, Y. K. Oh, and H. K. Chu, "Spatial distribution of early reflections and speech intelligibility" (in Korean), J. Archi. Inst. Kr. Suppl. 1(s) 21, 537-540 (2001).

Y. J. Choi, "The measurements and evaluations on the configurations of absorptive and diffusing treatments in classrooms using a scale model" (in Korean), J. Kr. Inst. Educat. Facili. 20, 37-44 (2013). crossref(new window)

H. Kuttruff, Room Acoustics (Applied Science Pub.Ltd., London, 1973), pp. 239.

S. B. Shin, Enhancement of the sound clarity in lecture rooms using absorptive and diffusive materials (Master thesis, Chungbuk National University 2007).

M. D. Egan, Architectural Acoustics (J. Ross Publishing Classics, Florida, 2007), pp. 52-53.

Skyviva,, 2011.

D. J. Ryu, C. J. Park, and C. H. Haan, "Interior finishing plan of the school classrooms according to the acoustical Performance criteria" (in Korean), J. Acoust. Soc. Kr. Suppl.2(s) 33, 80-86 (2014).