轮胎噪声评价指标研究

Study on criterion of tire noise evaluation

分析了人听觉系统的特性和轮胎噪声的特点 ,阐述了用Zwicker响度替代A声级作为轮胎噪声客观评价指标的优点 ,并对Zwicker响度和A声级两种客观评价指标进行对比试验。结果表明 ,在评价精度要求不高时可以采用A声级等常规指标进行粗略比较 ,而Zwicker响度评价结果和主观评价结果能较好吻合 。

The characteristics of human hearing system and the features of tire noise are analysed,the benifits from the replacement of Zwicker sound pressure level for sound level A as the criterion of objective tire noise evaluation are described,and a comparative test between two creteria,i.e.Zwicker sound pressure level and sound level A is carried out.The results show that the conventional criteria,such as sound level A is suitable for the less accurate evaluation;and the Zwicker sound level is a suitable criterion for objective tire noise evaluation because its result is well fitted to that of subjective tire noise evaluation.