Identification of road/tyre induced noise transmission paths in a vehicle
by S.K. Jha
International Journal of Vehicle Design (IJVD), Vol. 5, No. 1/2, 1984

Abstract: This paper concerns an experimental study conducted to evaluate the relative importance on road/tyre induced noise transmission paths in a vehicle. An instrumented vehicle with four accelerometers, two on the right front axle and two on the left rear axle (one in the vertical and the other in the fore and aft direction), and a microphone near the driver's head position, was run under coastdown condition. The tape rewarded data was analysed using the technique of multiple and partial coherence function analysis to define the contribution of interior noise transmitted via these paths - i.e., right front and left rear tyres. For the vehicle tested it was found that about 36% of the sound energy reaching inside the vehicle could be accounted for considering these paths only.

Online publication date: Sun, 25-May-2014

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