重庆大学学报2017，Vol.40Issue(1)：11-19,9.DOI:10.11835/j.issn.1000-582X.2017.01.002
不同关门力度下乘用车关门声声品质评价
The evaluation of sound quality for automotive door closing sounds with different closing force
摘要
Abstract
The result of correlation analysis in the subjective preference evaluation illustrates that the strength used to close the automotive door influences the judgment of sound quality seriously.So we acquired and studied the samples of the sounds from the driver’s ears when a car’s front door was closed heavily and lightly.And a new sound quality evaluation parameter named sharpness-energy (SE)was proposed.Firstly,energies of noise samples were calculated numerically based on dual ensemble empirical mode decomposition (EEMD)and Wigner-Ville distribution.Then SE was acquired through the calculation formula of sharpness.Finally,SE was normalized to a centesimal system.SE underlines the influence of high-frequency component in the judgment of sound quality.In order to verify the validity of the extraction process,we carried out a correlation analysis between SE and subjective evaluation results.The results illustrate that the SE method acquires better performance than sharpness when evaluating the sound of closing door.关键词
魏格纳/维尔分布/聚合经验模态分解/偏好性/主客观评价/声品质Key words
Wigner-Ville/EEMD (ensemble empirical mode decomposition)/preference/subjective and objective evaluation/sound quality分类
通用工业技术引用本文复制引用
徐中明,吴丹,夏小均,贺岩松,张志飞..不同关门力度下乘用车关门声声品质评价[J].重庆大学学报,2017,40(1):11-19,9.基金项目
重庆市基础与前沿研究计划项目（CSTC2015JCYJBX0075）。Supported by Chongqing Basic Science and Advanced Technology Research Project of China（CSTC2015JCYJBX0075）． （）
