Designing air cleaner with good performance of noise reduction is one of the effective ways for the intake noise control. 设计消声效果良好的空气滤清器是控制发动机进气噪声的有效措施之一。
Accelerating noise was measured and analyzed for a passenger car, the inlet air noise of its engine has been found to be the main noise source during the car accelerating period. 运用该技术对某汽车的加速噪声进行测量和分析，发现发动机进气噪声是该车主要的加速噪声源。
