1978-02-01

Experimental Approach to Reduction Technique for Engine Noise in Passenger Compartment 780172

This paper deals with high frequency noise in the passenger compartment which are caused by transmitted engine noise. For the purpose of noise reduction, several evaluation methods are developed. For the evaluation of a body transmission loss, a combination of a reverberant room and an anechoic room is used. The noise absorption of the compartment is evaluated under the concept of the saturated sound pressure level. And sufficient standard samples are measured to support the noise reduction development.

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