alexa Subjective Preference for Air-Conditioner Sounds inside
ISSN-2165-7556

Journal of Ergonomics
Open Access

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Research Article

Subjective Preference for Air-Conditioner Sounds inside A Car In Summer and Winter

Yoshiharu Soeta1*, Seiji Nakagawa1, Youhei Kamiya2 and Masaru Kamiya2

1Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan

2Advanced Key Technology R and D Div., Denso Corporation, Kariya, Aichi 448-8661, Japan

*Corresponding Author:
Yoshiharu Soeta
Biomedical Research Institute
National Institute of Advanced Industrial Science and Technology (AIST)
1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan
E-mail: [email protected]

Received date: June 20, 2016; Accepted date: July 01, 2016; Published date: July 07, 2016

Citation: Soeta Y, Nakagawa S, Kamiya Y, Kamiya M (2016) Subjective Preference for Air-Conditioner Sounds inside A Car In Summer and Winter . J Ergonomics 6:170. doi:10.4172/2165-7556.1000170

Copyright: © 2016 Soeta Y, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

The aim of this paper was to clarify the relationship between subjective preference for air-conditioner sounds and sound quality indices, such as factors extracted from the autocorrelation function (ACF) inside a car in summer and winter. We evaluated subjective preference using a paired comparison method. Specifically, we performed multiple regression analyses with scale values of preference as the outcome variable using a linear combination of LAeq, the ACF factors, and their standard deviations. The results indicated that total subjective preference for air-conditioner sound can be predicted using LAeq, the amplitude of the first maximum peak of the ACF, φ1, which corresponds to the pitch strength, and the width of the first decay of the ACF, Wφ(0), which corresponds to the spectral centroid. We found preference to increase with a decrease in LAeq and φ1, and an increase in Wφ(0). Thus, air-conditioner sounds with quieter levels, weaker pitch strength, and lower spectral centroid were associated with higher levels of preference. The temperature of the atmosphere had no effect on subjective preference for air-conditioner sounds.

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