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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2011.8
- 수록면
- 490 - 498 (9page)
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초록· 키워드
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To control the room acoustics of a multipurpose hall, finishing materials that can control the absorption and diffusion properties are needed. This study uses aluminum profiles to investigate the sound absorption and diffusion properties as air space increases in differing diffusion forms. Sound absorption coefficient was measured using the impedance tube method and reverberation room method. Also, the scattering coefficients depending on the aluminum profiles were measured in a scaled reverberation room (1/5 scale). The impedance tube method sound absorption coefficient increased in the low-mid frequency ranges (800-100 ㎐) where the aluminum profile and the increase in air space acted as a resonance type absorber. The sound absorption coefficient measured by the reverberation room method increased in the low-mid frequency ranges (630-800 ㎐), which is lower than the resonant frequency, as the back air space was increased from 40 ㎜ to 150 ㎜. Air space increases sound absorption in the frequency ranges over the resonant frequency (2000-4000 ㎐), and also decreases the difference in sound absorption coefficients in various frequencies. Scattering coefficient was over 0.5-0.65, similar to the scattering coefficient at high frequency ranges (over 2000 ㎐) in a semi-sphere. Therefore, it shows that Aluminum Profiles are effective as profile acoustical diffusers when considering both absorption and scattering performances.
목차
Abstract
1. 서론
2. 연구 방법
3. 측정결과 및 해석
4. 결론
인용문헌
참고문헌 (9)
참고문헌 신청
5. [학술지(정기간행물)] - 김용희 / 2006 / 확산지향성을 고려한 확산체 설계 / 한국소음진동공학회 논문집 16 (2) : 142 ~ 149
6. [학술대회논문] - 송이 / 2008 / 소규모 오페라 하우스의 확산설계 / 한국소음진동공학회 추계학술대회논문집 : 141 ~ 142
7. [학술지(정기간행물)] - Jeon, J. Y / 2004 / Development of scattering surface for concert halls / Applied Acoustic 65 : 341 ~ 355
8. [학술지(정기간행물)] - Kim, J. J / 2009 / Sound absorption characteristics of PTFE membrane material and their application to a multi-purpose stadium / Building Serv. Eng. Res Technol 30 : 213 ~ 226
9. [학술지(정기간행물)] - Vorlanender, M / 2000 / Definition and measurement of random-incidence scattering coefficients / Applied Acoustic 60 : 187 ~ 199
6. [학술대회논문] - 송이 / 2008 / 소규모 오페라 하우스의 확산설계 / 한국소음진동공학회 추계학술대회논문집 : 141 ~ 142
7. [학술지(정기간행물)] - Jeon, J. Y / 2004 / Development of scattering surface for concert halls / Applied Acoustic 65 : 341 ~ 355
8. [학술지(정기간행물)] - Kim, J. J / 2009 / Sound absorption characteristics of PTFE membrane material and their application to a multi-purpose stadium / Building Serv. Eng. Res Technol 30 : 213 ~ 226
9. [학술지(정기간행물)] - Vorlanender, M / 2000 / Definition and measurement of random-incidence scattering coefficients / Applied Acoustic 60 : 187 ~ 199
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UCI(KEPA) : I410-ECN-0101-2013-590-000752945