Vehicle Acoustics

Auditory perception of vehicle sounds

© Jürgen Landgraf

With investigations based on the method of the semantic differential, it is possible to determine the sound profiles of vehicles with respect to individual auditory perceptible properties. From the multitude of attribute evaluations, an auditory "footprint" of the complex perception of the vehicle sound emerges. A factor analysis describes the weighting of complex perception properties from the data of many "footprints" (e.g. the sportiness).

© Jürgen Landgraf

The similarity of vehicle sound is a multidimensional space, based on all perceived features. The only possibility of an examination without feature and value specification is the questioning of the subjects about the similarity. The evaluations of all subjects’ surveys give similarity distances between the offered vehicle sounds. The dendrograms from cluster analyzes provide structured relationships between different vehicles and vehicle groups and are used for sound and brand design.

© Jürgen Landgraf

If one correlates the results of the similarity space and the semantic differential with the physical signal, also taking into account the expectation of a special target group, one generates the prerequisite for the holistic development of a Sound Performance Index.

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