Disturbing Engine Noise in the Vehicle Interior

Authors

Christian Schumann, MSc, Prof. Dr.-Ing. Stefan Pischinger, Institute for Combustion Engines (VKA), RWTH Aachen University, Aachen;
Florian Doleschal, MSc, Prof. Dr. rer. nat. Jesko Verhey, Department of Experimental Audiology, Otto von Guericke University Magdeburg,
Magdeburg

Summary

Besides optic and haptic criteria, the interior sound has a strong influence on the perceived quality impression of a vehicle. Especially the occurrence of separately audible noise components is commonly associated with an insufficient product quality. Which is why the reduction of disturbing noise components is a key factor for the improvement of overall product quality. Since the acoustic optimization is a complex and time consuming process, there is a significant need for an analysis tool, which identifies automatically disturbing engine noise components at the vehicle interior noise. Against this backdrop, a novel analysis tool is introduced, which extracts tonal and impulsive engine noise components from the overall engine noise and automatically evaluates the annoyance of each noticeable engine component. This tool allocates each disturbing noise to the emitting engine component. It is then possible to listen to each engine
component noise individually and synthesize a target noise by superimposing manually weighted component noises.

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