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页数:5页
时间:2019-06-01
《电动车噪声品质心理声学主客观评价模型》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第49卷第8期西安交通大学学报Vo1.49NO.82015年8月JOURNALOFXI’ANJIAOTONGUNIVERSITYAug.2015DOI:10.7652/xjtuxb201508016电动车噪声品质心理声学主客观评价模型方源,章桐。,陈霏霏。,郭荣。(1.同济大学新能源汽车工程中心,201804,上海;2.同济大学汽车学院,201804,上海;3.同济大学中德学院,201804,上海)摘要:以某电动车在匀速行驶时采集到的噪声样本为评价对象,结合人类听觉系统建立适用于电动车的客观评价指标——敏感频带能量比,采用等级评分法对电动车噪声品质焦躁度进行主观评价试
2、验,分析并计算各噪声样本的心理声学客观参数。通过相关分析和回归分析,建立了可描述主观评价与客观参量相关性的焦躁度评价模型。研究结果表明:传统车噪声在低频段能量较为集中,最大值在中心频率为200Hz的频带,峰值达到37%,而电动车噪声能量集中在中心频率高于1kHz的频率段上,峰值达到3O;敏感频带能量比与主观评价值的相关性达到0.958,优于其他心理声学参数;电动车噪声品质焦躁度主要受粗糙度、抖动度和频带能量比等心理声学客观参数影响。关键词:电动车;噪声品质;主观评价;心理声学中图分类号:U463.2文献标志码:A文章编号:0253—987X(2O15)08—0097—
3、05ASubjectiveand0bjectiveEvaluationModelforPsychoacousticalQualityofElectricVehicleNoiseFANGYuan,ZHANGTong,。,CHENFeifei1,2,GUORong’(1.NewCleanEnergyAutomotiveEngineeringCenter,TongjiUniversity,Shanghai201804,China;Z.SchoolofAutomotiveStudies,TongjiUniversity,Shanghai201804,China;3.Sino—
4、GermanCollegeofAppliedSciences,TongjiUniversity,Shanghai201804,China)Abstract:Noisesofanelectricvehicle(EV)atdifferentspeedsaresampledastheevaluationobjects.Anobjectiveevaluationparameter,sensitivefrequency—bandenergyratio(SFBER),isestablishedbycombiningwiththehumanauditorysystemcharact
5、eristics.Thesubjectiveevaluationtestofsoundqualityannoyanceiscarriedoutbyusingthegradingmethod.Severalobjectivepsychoacousticalparametersarecalculated,andforeachsampleandasubjectiveevaluationmodeldescribingthecorrelationbetweensubjectiveannoyanceevaluationsandpsych0ac0usticalobjectivepa
6、rametersisestablishedthroughanalysesoflinearcorrelationandmultilinearregression.Theresultsshowthatthenoiseenergyoftraditionalcarsisconcentratedinlowfrequencybandandthemaximumreaches37whenthecentralfrequencyisthefrequencybandof200Hz,whilethenoiseenergyofelectricvehiclesisconcentratedonth
7、efrequencybandwithitscenterfrequencyabove1kHzandthepeakvaluereaches30%.ThecorrelationbetweenSFBERandannoyanceis0.958andisbetterthantheotherpsychoacousticalparameters.TheEVsoundqualityannoyanceisaffectedmainlybythreepsychoacoustica1parameters,i.e.roughness,收稿日期:2014—12—27。作者简介:方
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