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논문 기본 정보

자료유형
학술저널
저자정보
정광민 (University of Seoul) 김용희 (Youngsan University) 김명준 (University of Seoul)
저널정보
한국소음진동공학회 한국소음진동공학회논문집 한국소음진동공학회논문집 제33권 제2호(통권 271호)
발행연도
2023.4
수록면
203 - 213 (11page)
DOI
10.5050/KSNVE.2023.33.2.203

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초록· 키워드

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This study investigated the practical effects of the reverberation variable device on controlling reverberation time of the sound fields in a multi-purpose music practice room. The surface of the reverberation variable device can be changed to absorb or reflect the incident sounds by the integrated electronic control system. The developed devices was installed on the surfaces of a music practice room having a length and width of 13.5 m and 3.5 m, respectively, for practical verification. The reverberation variable devices in a total of 96 units were employed in the room with a surface area of 78 m2. Especially, 50 units and 46 units of device were installed on the walls and the ceiling, respectively. As a result, the maximum changed reverberation time by frequency bands was measured as 0.15 s at 125 Hz, 0.63 s at 250 Hz, 0.59 s at 500 Hz, 0.37 s at 1000 Hz, and 0.3 s at 2000 Hz. The reflection mode with all the reverberation variable devices in closed state showed the highest reverberation time of 1.29 s at 500 Hz. The sound absorption mode with all the reverberation variable devices in opened state showed the lowest reverberation time of 0.7 s at 500 Hz. According to the partial control, the reverberation time at 500 Hz was 0.89 s when half of the wall units were opened, and 0.81 s when the half of the ceiling units were opened. Additionally, the design application of the developed devices was examined in accordance with ISO 23591.

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ABSTRACT
1. 서론
2. 잔향가변장치 현장 설치
3. 실내음향 파라메타 측정
4. 측정 결과 평가 및 토의
5. 결론
References

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UCI(KEPA) : I410-ECN-0101-2023-424-001322349