Abstract
This paper investigates generation mechanism of abnormal noise due to automotive rearview mirror in closing vehicle door. First, the signal of time history about sound pressure and acceleration is analysed by using a digital filter for transient response. Second, the countermeasure for the vibration control is examined, the effects of countermeasure to the abnormal noise are verified by comparison of sound pressure and acceleration with and without countermeasure. Finally, the signal of time history about acceleration simulated contact phenomena that occurs on the rearview mirror is generated for the purpose of investigating the generation mechanism.
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