An analysis of the relative influence of structure borne and airborne noise into the habitacle of a road vehicle prototype having independent sources

A development concerning the use of Multiple Input/Single Output MISO as ail identification technique in automotive Vibro-Acoustics has been considered. The objective is to provide a tool which enables not only an useful parameter characterisation but may also enable identification of air-borne and structure-borne paths associated with the global noise arriving at a typical motor car cockpit. As a by product measurement and car testing procedures difficulties can be reduced. A purpose built car mock-up has been used in order o provide controlled conditions for this development. The measurement techniques are described in combination with the purpose developed mathematical tools. A comparison is established between measurements and the computed results. This comparison indicates that this development is a promising tool for the characterisation of full-scale structure-borne and air-borne noise paths in vehicles.