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http://dx.doi.org/10.5050/KSNVE.2012.22.11.1113

Interior Noise and Low Frequency Noise Characteristics of Busan Metro Line 3 Noise  

Hong, Do-Kwan (KERI Electric Motor Research Center)
Jeong, Jae-Boo (Graduate School of Mechanical Engineering, Dong-A University)
Jung, Seung-Wook (Graduate School of Mechanical Engineering, Dong-A University)
Gang, Hyun-Wook (GMB Korea Corporation R&D 1 team)
Ahn, Chan-Woo (Department of Mechanical Engineering, Dong-A University)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.22, no.11, 2012 , pp. 1113-1120 More about this Journal
Abstract
This paper deals with the analysis of interior noise and low frequency noise characteristic for the Busan citizens to use public transport, Busan Metro Line 3. The interior noise evaluation index, articulation index(AI) is evaluated the lower value about average 22 % in a whole range, this is difficult to have a conversation. Also, noise criteria(NC) curve is partially evaluated as NC-65 below 2000 Hz, space type is evaluated as factories. Another of interior noise evaluation index, preferred speech interference level(PSIL) is evaluated the upper value about average 66 dB(A) in a whole range, this is evaluated to be interrupted. In the case of low frequency noise(20~200 Hz), the measurement of low frequency noise is assessed largely beyond noise criteria of ISO 226. The low frequency noise should be reduced because low frequency noise affects on psychological stress and displeasure although low frequency noise is not recognized by auditory sense. The low frequency noise criteria and guideline will be enacted from now on in Korea.
Keywords
Busan Metro Line 3; Low Frequency Noise; Articulation Index; Preferred Speech Interference Level; ISO 226; 1/3-Octave Band; Noise Criteria Curve;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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