NCPX 계측 방법에 따른 속도별 소음 데시벨 예측 모델 개발에 대한 연구 = A Study on Development of a Prediction Model for the Sound Pressure Level Related to Vehicle Velocity by Measuring NCPX Measurement

다국어 초록 (Multilingual Abstract)

PURPOSES : The objective of this study is to provide for the overall SPL (Sound Pressure Level) prediction model by using the NCPX (Noble Close Proximity) measurement method in terms of regression equations.
METHODS: Many methods can be used to measure the traffic noise. However, NCPX measurement can powerfully measure the friction noise originated somewhere between tire and pavement by attaching the microphone at the proximity location of tire. The overall SPL(Sound Pressure Level) calculated by NCPX method depends on the vehicle speed, and the basic equation form of the prediction model for overall SPL was used, according to the previous studies (Bloemhof, 1986; Cho and Mun, 2008a; Cho and Mun, 2008b; Cho and Mun, 2008c).
RESULTS : After developing the prediction model, the prediction model was verified by the correlation analysis and RMSE (Root Mean Squared Error). Furthermore, the correlation was resulted in good agreement.
CONCLUSIONS: If the polynomial overall SPL prediction model can be used, the special cautions are required in terms of considering the interpolation points between vehicle speeds as well as overall SPLs.

참고문헌 (Reference)

1 이상염, "서울시 내부순환도로 교면포장 형식에 따른 소음특성 연구" 한국도로학회 14 (14): 19-28, 2012

2 Dae-seoung, Cho, "Prediction of Highway Traffic Noise" 1280-1286, 2001

3 Mun, S., "Noise measuring technique and field evaluation based on the effects of vehicles and pavement types" 36 : 1816-1824, 2009

4 Mun, S., "Development of a highway traffic noise prediction model that considers various road surface types" 69 : 1120-1128, 2008

5 Mun, S, "Determination of the sound power levels emitted by various vehicles using a novel testing method" 69 : 185-195, 2008

6 Chul-Hwan, Kim, "A Study on Comparison of Highway Traffic Noise Prediction Models using in Korea" 1-4, 2007