期刊
APPLIED ACOUSTICS
卷 97, 期 -, 页码 46-53出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.apacoust.2015.04.007
关键词
High-speed train; Transient noise; Short-term annoyance; Acoustic comfort of passenger compartments
类别
资金
- Railroad Technology Research Program - Ministry of Land, Infrastructure and Transport of Korean government [14RTRP-B072484-02]
- Korea Agency for Infrastructure Technology Advancement (KAIA) [69120] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The sounds in passenger compartments of high-speed trains operating in Korea under various conditions were measured, and its evaluation method for annoyance is presented. The stationary noise was measured for trains operating on ballast, concrete, open, or tunneled tracks at different speeds. The unsteady sudden variation of sound resulting from the entrance or exit of a tunnel, or passing another train traveling in the opposite direction was also measured. The sound pressure level and sound quality metrics such as loudness, sharpness and roughness were calculated for different conditions, and their variations were compared. The short-term annoyance was evaluated for various sounds using a paired comparison method. The loudness exhibited a closer correlation to the annoyance resulting from many different noise sources in the passenger compartment for stationary sounds but was not sufficient in rating noises under sudden variation. To evaluate the annoyance caused by the unsteady sound, a parameter adopting moving average filter to reflect the rate of change in sound quality metrics was proposed. Using statistical analysis, a sound index for estimating the annoyance using independent variables was developed, and its accuracy was compared to existing psychoacoustic annoyance model proposed by Zwicker and Fastl. (C) 2015 Elsevier Ltd. All rights reserved.
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