Experimental Investigation of Factors Influencing Chair Absorption Characteristics

Young-Ji Choi; JaeOh Koo

doi:10.7776/ASK.2015.34.4.282

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Experimental Investigation of Factors Influencing Chair Absorption Characteristics 의자 흡음특성에 영향을 미치는 인자에 관한 실험적 연구

31 July 2015. pp. 282-287

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Abstract

This paper examines the combinations of factors influencing the absorption characteristics of theatre chairs. One-tenth scale model chairs and listeners that closely approximated the absorption characteristics of full scale theatre chairs were used to measure the interactive effects of the test variables on the chairs absorption characteristics. The test variables were the type of chairs, the row spacing, as well as the presence of people and carpet. The variations of absorption increments with varied row spacing tended to be smallest when the chairs were less absorptive, i.e. with less carpet or occupants. The incremental effects of adding occupants or carpet averaged over three row spacings varied over frequency.

Keywords

Chairs

Absorption characteristics

Row spacing

본 논문은 공연장에서 의자 설치 조건의 변화가 의자의 흡음특성에 미치는 영향에 관하여 실험적인 연구를 실시하였다. 실제 공연장 의자의 흡음특성을 재현한 1/10 스케일의 축소 의자와 인체모형을 이용하여 실험을 진행하였다. 실험변수로는 의자의 흡음정도, 의자 열 간격의 변화, 청중의 착석유무, 그리고 바닥의 카펫설치 유무로 제한하였다. 열 간격에 따른 청중의 착석 및 바닥의 카펫설치 유무의 영향을 평균적으로 분석하였을 때 의자의 흡음률이 낮을수록 즉, 카펫 혹은 청중 등의 부가적인 흡음력이 없을 때, 열 간격에 의한 흡음률 변화폭이 작게 나타났다. 의자 열 간격 평균 주파수 대역별 흡음률 증가 값에 따르면 주변 인자에 의한 흡음률의 변화는 주파수대역별로 다르게 나타났다.

키워드

의자

흡음특성

열 간격

References

1.J. S. Bradley, Y. J. Choi, and D. U. Jeong, “Understanding chair absorption characteristics using the perimeter-to-area method,” Appl. Acoust. 74, 1060-1068 (2013).

2.Y. J. Choi, “Changes for theatre chair sound absorption characteristics with varied occupancy conditions” (in Korean), J. Acoust. Soc. Kr. Suppl.2(s) 33, 23-25 (2014).

3.Y. J. Choi, “Modelling chairs and occupants to closely approximate the sound absorption of occupied full scale theatre chairs,” Appl. Acoust. 75, 52-58 (2014).

4.J. S. Bradley, “Predicting theatre chair absorption from reverberation chamber measurements,” J. Acoust. Soc. Am. 91, 1514-1524 (1992).

5.J. S. Bradley, “The sound absorption of occupied auditorium seating,” J. Acoust. Soc. Am. 99, 990-995 (1996).

6.ISO 354-Acoustics, Measurement of sound absorption in a reverberation room (2003).

7.OriginLab data analysis and graphing software, http:// www.originlab.com/, 2007.

8.Y. J. Choi, J. S. Bradley, and D. U. Jeong, “Towards better predictions of theatre chair absorption using the perimeter- to-area method,”Appl. Acoust. 75, 119-127 (2014).

9.F. Martellota and E. Cirillo, “Experimental studies of sound absorption by church pews,” Appl. Acoust. 70, 441-449 (2009).

Information

Publisher :The Acoustical Society of Korea
Publisher(Ko) :한국음향학회
Journal Title :The Journal of the Acoustical Society of Korea
Journal Title(Ko) :한국음향학회지
Volume : 34
No :4
Pages :282-287
Received Date : 2015-03-18
Revised Date : 2015-04-22
Accepted Date : 2015-06-10
DOI :https://doi.org/10.7776/ASK.2015.34.4.282

The Journal of the Acoustical Society of KoreaISSN:1225-4428(Print) 2287-3775(Online)한국음향학회

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