본문 바로가기
  • Home

A Study on Indoor Noise Prediction Methods and Evaluation Techniques in Classrooms According to Noise Sources – Focusing on Road and Railway Noise -

  • Journal of Environmental Impact Assessment
  • Abbr : J EIA
  • 2025, 34(3), pp.170~183
  • Publisher : Korean Society Of Environmental Impact Assessment
  • Research Area : Engineering > Environmental Engineering
  • Received : April 30, 2025
  • Accepted : June 18, 2025
  • Published : June 30, 2025

WonHyung Park 1 SoungCheol Yoon 2 JaeWoo Chung 3

1한국토지주택공사/경상국립대학교
2주식회사 이너턴스
3경상국립대학교

Accredited

ABSTRACT

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.

Citation status

* References for papers published after 2024 are currently being built.