Acoustic and Tactile Transfer Functions Measurements on Automotive Development

The NVH perception of a vehicle customer is the sum of contributions from various forces and its paths, structure and airborne. Each contribution is the product of an input force and body sensitivity. The tactile and acoustic transfer functions measurements determine how much of the input forces will reach to the costumer. Input points are suspension systems, powertrain and exhaust attachment points. Equivalent stiffness of these points is also determined on this test. This metric is used on target settings or to optimize body structure design at an early stage.