The results of bench test and road test show that the abnormal noise reduced greatly after the improvement and the Helmholtz resonance structure is better than the film-damping structure.
台架实验和整车道路实验均表明，两种结构对降低后桥异响均有显著效果，车内异响噪声亦得以基本消除，且亥姆霍兹穿孔板吸声结构的效果略优于薄膜阻尼消声结构。
The mechanism for low noise asphalt pavement to lower tyre noise is analyzed. A acoustical model is put forward. The resonance frequency of sound wave is analyzed with Helmholtz resonator model.
分析了低噪声沥青混凝土路面降低轮胎噪声的机理，建立低噪声沥青混凝土路面的声学模型，用亥姆霍兹共振器模型分析计算了声波的共振频率。
The mechanism for low noise asphalt pavement to lower tyre noise is analyzed. A acoustical model is put forward. The resonance frequency of sound wave is analyzed with Helmholtz resonator model.
分析了低噪声沥青混凝土路面降低轮胎噪声的机理，建立低噪声沥青混凝土路面的声学模型，用亥姆霍兹共振器模型分析计算了声波的共振频率。
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