Abstract: Based on the measurement and analysis results of vibration and noise in the rear axle housings,the paper presents some techniques and results for attenuating noise in the honsings.The paper is composed of three parts:(1) reasonable verification of the techniqnes; (2) investigation on the mechanism for film damping and (3) experiment an evaluation to noise rednction using these techniques.

Key words: noise control, rear axle housings, automobiles