期刊
APPLIED ACOUSTICS
卷 145, 期 -, 页码 234-244出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.apacoust.2018.10.015
关键词
Water sounds; Traffic noise; Acoustic perception; Thermal perception; Multisensory perception
类别
资金
- Basic Science Research Program of the National Research Foundation (NRF) - Ministry of Education, Korea [2015R1D1A1A01057041, 2018R1D1A1B07048157]
- National Research Foundation of Korea [2015R1D1A1A01057041, 2018R1D1A1B07048157] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The effects of indoor water sounds on traffic noise perception were investigated under three room temperatures of 18 degrees C, 24 degrees C, and 30 degrees C through listening experiments with 54 participants. Two types and four levels of water sounds (35, 40, 45, and 50 dBA) were presented with four levels of traffic noise (45, 50, 55, and 60 dBA) in an indoor environmental test laboratory. Water sounds were recorded using a simple indoor fountain comprising a submersible pump and two types of nozzles (foam-jet and mushroom), which generated different water sound spectra. The listeners assessed the thermal and acoustic environments on eleven adjective attributes, representing negative acoustic attributes, positive acoustic attributes, acoustic comfort, thermal comfort, and overall comfort. The results showed that indoor water sounds enhanced pleasantness, calmness, and naturalness without increment of noisiness, loudness, or annoyance in the 30 degrees C condition, while no perceptual improvement of traffic noise was found in the 18 degrees C and 24 degrees C conditions. Room temperature affected both thermal perception and acoustic perception. Water sounds affected not only acoustic perception, but also thermal and overall indoor environmental comfort. A just noticeable water sound level was preferred to mitigate intrusive traffic noise perceptually in a room. The noise perceived in a room should be described by both negative and positive adjectives together, in order to evaluate the effects of indoor environment, such as water sounds and temperature, on noise perception. (C) 2018 Elsevier Ltd. All rights reserved.
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