全油门加速工况车内声品质研究

以23辆乘用车的3挡全油门加速工况的车内噪声为研究对象,对车内声品质采用等级评分法进行主观评价试验,分析计算各噪声样本的心理声学参数和非心理声学的客观参数,并应用多元线性回归理论建立声品质预测模型。研究表明,响度、线性度和粗糙度是影响听众对全油门加速噪声主观感受的最重要的因素,模型预测结果与主观评价试验结果相关系数R~2为0.853,预测值与主观评价实测值吻合度较高,所建立的声品质评价模型在统计学上是有意义的。

The research of vehicle interior noise quality under the accelerating condition

The interior noise samples from 23 types of passenger cars at wide open throttle condition were selected as the evaluation objects. The subjective evaluation test of sound quality was carried out with the magnitude estimation. Several primary objective psychacoustical parameters of these samples were calculated. And applies the theory of multiple linear regression to establish sound quality prediction model. Results show that loudness,linearity,and roughness were the most important factor among those affecting human perceptions of vehicle interior noise. The correlation coefficient between predictions and subjective assessment results is 0.853,a good agreement between prediction value and result of jury test. the subjective evaluation of sound quality evaluation model is significant in statistics. the subjective evaluation of sound quality evaluation model is significant in statistics.