음향 반사판의 밀도별 흡음특성 및 무대음향에의 영향Effect of Acoustic Reflector’s Surface Density on Sound Absorption Characteristics and Stage Acoustics
- Other Titles
- Effect of Acoustic Reflector’s Surface Density on Sound Absorption Characteristics and Stage Acoustics
- Authors
- 김영선; 정정호; 전진용; 김명석
- Issue Date
- May-2012
- Publisher
- 한국소음진동공학회
- Keywords
- Acoustic Reflector(음향 반사판); Sound Absorption(흡음); Surface Density(면밀도); Room Acoustics (실내음향); Stage Acoustics(무대음향)
- Citation
- 한국소음진동공학회논문집, v.22, no.5, pp.429 - 436
- Indexed
- KCI
- Journal Title
- 한국소음진동공학회논문집
- Volume
- 22
- Number
- 5
- Start Page
- 429
- End Page
- 436
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/165628
- DOI
- 10.5050/KSNVE.2012.22.5.429
- ISSN
- 1598-2785
- Abstract
- In concert halls and auditoriums, acoustic reflector and stage enclosure is one of the main factors on the room and stage acoustic characteristics. As a stage enclosure and acoustic reflector honey comb based light-weight reflector is widely used, because it is easy to install. However, there was not enough research on the surface density effect on room and stage acoustics. In this study, sound absorption coefficient tests on three kinds of wooden acoustic reflectors with different surface density were conducted. Surface density of acoustic reflector was changed from 11kg/m2 to 41kg/m2. For the low frequency excitation, sub-woofer was used with omnidirectional loud-speaker simultaneously. From the experiments, it was found that sound absorption coefficient below 250Hz band was decrease by the increment of surface density. In order to check the influence of the surface density on room and stage acoustic parameters, room acoustic simulation was conducted with sound absorption coefficients, which were tested in reverberation chamber. By the increment of surface density of acoustic reflector, RT(reverberation time) and EDT(early decay time) were increased. Also, ST(stage support) was improved in low frequency bands.
- Files in This Item
-
Go to Link
- Appears in
Collections - 서울 공과대학 > 서울 건축공학부 > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.