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In the past few decades, the minimization of interior noise levels in automotive cabins has become a very active research area, mainly encouraged by the need for weight reduction and the current trend towards environmentally compatible hybrid-electric powertrain concepts. To improve the interior noise performance, CAE predictions have gained importance, especially in the early development stage when it is still possible to make changes without negatively affecting the vehicle development time. It is obvious that the effectiveness of this approach greatly depends on the accuracy of the predictions made using such a model. Hence, in order to understand the modelling challenges and improve the overall modelling know-how which will be useful in the car development phase, the experimental acoustic characterization of the cabin plays a crucial role. When performing an interior acoustic study, it is important to relate the acoustic responses to the intrinsic system behaviour of the cabin, which can be achieved by Acoustic Modal Analysis 1. Among the various specific challenges of this analysis, the test setup itself is a nontrivial task, as it includes the creation of a geometrical wireframe model that represents the 3D position of the sensors. An (acoustic) modal analysis test can easily consist of hundreds of degrees of freedom, particularly when the results are used for validating and updating finite element (FE) models. Establishing a precise test geometry then relies on the capability of the operator to instrument exactly at predefined locations. It is clear that in many realistic cases this task can be rather challenging, above all when the structure is …