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汽车加速时车内噪声嘈杂感主客观评价模型研究
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摘要
以轿车在缓加速或节气门全开行驶条件下的车内噪声样本为评价对象,采用成对比较法对轿车的车内噪声品质嘈杂感进行主观评价试验,计算了各噪声样本的主要心理声学和常规物理声学客观参数,并通过线性相关分析和多元回归分析,建立了车内噪声嘈杂感的主观评价数学模型。研究表明,在加速工况下车内噪声品质嘈杂感主要受A声级总值和250~800Hz声压级随时间变化的斜率参数影响。
Considering the interior sound of cars during half or full throttle acceleration,subjective evaluation of noisy was carried out based on the paired comparison method.In addition,both the psychoacoustics and physical acoustics metrics of the sound are calculated and the evaluation models of noisy are established by means of multiple linear regression method.The results indicate that the noisy of the vehicle during acceleration is mainly relevant to the slope of A- weighted sound pressure level and linear sound pressure level between 250 Hz and 800 Hz in time domain.
引文
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