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Short-term noise annoyance assessment in passenger compartments of high-speed trains under sudden variation

Title
Short-term noise annoyance assessment in passenger compartments of high-speed trains under sudden variation
Author
박준홍
Keywords
High-speed train; Transient noise; Short-term annoyance; Acoustic comfort of passenger compartments
Issue Date
2015-08
Publisher
ELSEVIER SCI LTD
Citation
APPLIED ACOUSTICS, v. 97, Page. 46-53
Abstract
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.
URI
http://www.sciencedirect.com/science/article/pii/S0003682X15001164http://hdl.handle.net/20.500.11754/26929
ISSN
0003-682X; 1872-910X
DOI
10.1016/j.apacoust.2015.04.007
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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