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http://dx.doi.org/10.5050/KSNVN.2005.15.9.1084

A Study on the Indoor Noise Limits of Apartment Houses from the Road Traffic Noise  

Lee, Ju-Yeob (전남대학교 대학원 건축공학과)
Song, Min-Jeong (전남대학교 공업기술연구소)
Jang, Gil-Soo (동신대학교 건축공학과)
Kim, Sun-Woo (전남대학교 건축학부)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.15, no.9, 2005 , pp. 1084-1091 More about this Journal
Abstract
The indoor noise limit for road traffic noises is needed to secure comfortable acoustical quality in apartment houses. To achieve this goal, psycho-acoustic experiments were carried out with road traffic noise sources modulated by the transmission loss characteristics of the external windows. Finally, a correlation analysis between noise rating index and subjective responses, and an analysis of satisfactory percentage of the dose-response curves varied with respondents was conducted. As a result of this study, followings are suggested. (1) On correlation between dose level and psycho-acoustical response, the initial level of negative feeling is located on $40.1\~40.6\;L_{eq}$ dB(A), (2) On the degree of satisfaction to road traffic noise. near $35\;\%$ point being same dissatisfaction degree is to be assumed $40\~41$ dB(A) of indoor noise level presented into three vocabulary. It is suggested to be reasonable level of 40 dB(A) on the indoor noise limits for intruding road traffic noise. and it is appropriate to be the 5 dB level difference between grades. The results of this study may be used to evaluate the acoustic threshold level for road traffic noise or as a basis for specifying the desired acoustic environment of dwellings.
Keywords
Road Traffic Noise; Indoor Noise Limit; Psycho-acoustic Experiment; Percentage of Satisfaction;
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