소음 발생원별 교사 내 실내 소음 예측기법 및 평가방법에 관한 연구 - 도로, 철도 소음을 중심으로-

초록

This study investigates the transmission characteristics of outdoor noise into indoor Using road traffic noise as the baseline, both field measurements and simulation-based predictionswere conducted to evaluate the reliability of indoor noise transmission prediction methods. Resultsshowed that the line source model demonstrated superior predictive performance compared to thepoint source model, with prediction errors remaining within ±1 dB(A) on average. The averageindoor transmission coefficients for road and railway noise were -8.0 and -8.2 dB(A), respectively,attributed to the similar acoustic characteristics of both sources. The findings of this study provide a validated predictive framework that may serve as a usefulreference for environmental impact assessments and educational environment evaluations(includingexisting schools) in the planning of new school facilities. classroom environments, with a focus on road and railway noise. Since each noise source exhibitsdistinct acoustic properties-such as differences in frequency spectrum and sound pressure level-thepropagation of sound from outdoor to indoor spaces varies accordingly. In this research assumes thatthe primary factors influencing indoor noise levels are the indoor sound absorption rate and the areaof window and opening surfaces.

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