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基于时频感知加权的车辆路面冲击声品质评价

朱洪林 宋帅 吴昱东 杨明亮 税永波 丁渭平

朱洪林, 宋帅, 吴昱东, 杨明亮, 税永波, 丁渭平. 基于时频感知加权的车辆路面冲击声品质评价[J]. 西南交通大学学报, 2023, 58(2): 296-303. doi: 10.3969/j.issn.0258-2724.20211060
引用本文: 朱洪林, 宋帅, 吴昱东, 杨明亮, 税永波, 丁渭平. 基于时频感知加权的车辆路面冲击声品质评价[J]. 西南交通大学学报, 2023, 58(2): 296-303. doi: 10.3969/j.issn.0258-2724.20211060
ZHU Honglin, SONG Shuai, WU Yudong, YANG Mingliang, SHUI Yongbo, DING Weiping. Evaluation of Vehicle Road Impact Sound Quality Based on Time-Frequency Perception Weighting[J]. Journal of Southwest Jiaotong University, 2023, 58(2): 296-303. doi: 10.3969/j.issn.0258-2724.20211060
Citation: ZHU Honglin, SONG Shuai, WU Yudong, YANG Mingliang, SHUI Yongbo, DING Weiping. Evaluation of Vehicle Road Impact Sound Quality Based on Time-Frequency Perception Weighting[J]. Journal of Southwest Jiaotong University, 2023, 58(2): 296-303. doi: 10.3969/j.issn.0258-2724.20211060

基于时频感知加权的车辆路面冲击声品质评价

doi: 10.3969/j.issn.0258-2724.20211060
基金项目: 重庆市自然科学基金(cstc2021jcyj-msxmX1020) ;四川省科技计划项目2020YFG0130
详细信息
    作者简介:

    朱洪林(1989—),男,博士研究生,研究方向为车辆声振舒适性、车辆智能化理论与技术,E-mail:zhlswjtu@foxmail.com

    通讯作者:

    丁渭平(1968—),男,教授,研究方向为车辆声振舒适性、车辆智能化理论与技术,E-mail:dwp@swjtu.edu.cn

  • 中图分类号: U467.11

Evaluation of Vehicle Road Impact Sound Quality Based on Time-Frequency Perception Weighting

  • 摘要:

    为表征与量化人对路面冲击声的主观感受,首先,对减速带工况冲击非平稳噪声信号进行声时感知时长定义,同时根据人耳听声可辨性将声时历程分为冲击段、峰值段及衰减段;进而,以小波变换提取冲击噪声中的主冲击与多重微冲击特征信息,组成冲击声品质评价的基础特征阵;然后,类比峰值因子法定义频域滤波因子,并基于序关系分析法确定时变感知加权系数,组建时频滤波网络对基础特征阵加权且建立冲击声品质时频感知评价指标;最后,基于实车过减速带冲击噪声测试数据计算声品质指标,并进行对比验证. 研究结果表明:所提时频感知加权评价指标与主观评价的相关系数在车速20 km/h时为0.927,在车速30 km/h时为0.922;在考虑路面冲击声声时历程全程评价时,经典的声品质评价指标(特征频带时变响度)与主观评价的相关系数在车速20 km/h时为0.933,在车速30 km/h时为0.649;所提时频感知加权评价方法对于车速为20 km/h与30 km/h的情况具有较好的适用性.

     

  • 图 1  路面冲击声品质评价指标提取流程

    Figure 1.  Process of road impact sound quality evaluation method

    图 2  减速带与声压测点

    Figure 2.  Speed bump and sound pressure measuring location

    图 3  减振器阻尼因素水平示例

    Figure 3.  Example of damping factor levels

    图 4  STF相关性分析

    Figure 4.  Correlation analysis of STF

    图 5  路面冲击感知时长界定与数据对比

    Figure 5.  Definition of road impact perception time and data comparison

    图 6  STF特征阵分布对比

    Figure 6.  Characteristic matrix distribution of STF

    图 7  时变响度模型相关性分析

    Figure 7.  Correlation analysis of time-varying loudness method

    表  1  路面冲击声品质主观评价等级评分定义

    Table  1.   Definition of subjective evaluation grade of road impact sound quality

    评价等级没有不
    舒适
    略微不
    舒适
    不舒适明显不
    舒适
    极不舒适
    评分1~23~456~89~10
    下载: 导出CSV

    表  2  路面冲击声品质指标

    Table  2.   Road impact sound quality indicators

    试验编号车速/
    (km·h−1
    TV/msTS/msTM/msTD/msSTF/主观评分
    Test1205001001602406.813.87
    Test2205001001602404.663.62
    Test3205001001602406.754.37
    Test42050010016024024.175.50
    Test52050010016024039.195.62
    Test62050010016024018.615.37
    $ \vdots $$\vdots $$\vdots $$\vdots $$\vdots $$\vdots $$\vdots $$\vdots $
    Test27303408010016045.545.75
    Test28303408010016042.315.75
    Test29303408010016041.465.62
    Test30303408010016039.415.37
    下载: 导出CSV

    表  3  STF相关分析统计

    Table  3.   The correlation analysis statistics of STF

    指标编号车速/(km·h−1相关系数置信水平
    STF5200.9270.99
    300.9220.99
    下载: 导出CSV

    表  4  时变响度模型主要区别

    Table  4.   Main difference of the time-varying loudness model

    类别 尺度/级数 传递特性 频域掩蔽 时域掩蔽
    Zwicker 时变响度 Bark [0~24] 外耳与中耳综合考虑 图表法 单一时间常量
    Moore 时变响度 ERB [1.8~38.9] 外耳与中耳独立考虑 机理数学模型 多时间常量
    下载: 导出CSV

    表  5  时变响度模型相关分析统计

    Table  5.   Correlation analysis statistics of time-varying loudness method

    指标编号车速/(km·h−1相关系数置信水平
    NmaxZwicker1200.7320.99
    300.5870.95
    NZwicker2200.9330.99
    300.5830.95
    NmaxMoore3200.8660.99
    300.6490.95
    NMoore4200.9260.99
    300.168
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-12-24
  • 修回日期:  2022-04-06
  • 网络出版日期:  2023-01-03
  • 刊出日期:  2022-04-11

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