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FrancoAngeli Journals

Scientific papers

Vol. 48 No. 1 (2024)

Coherence-based Beamforming algorithm for vehicle cabin acoustic comfort evaluation

DOI
https://doi.org/10.3280/ria1-2024oa17464
Submitted
marzo 13, 2024
Published
2024-07-22

Abstract

The growing importance of electric vehicles in the global market makes the reduction of wind noise a crucial point for investing money and resources. To improve vehicle acoustic comfort, it is increasingly important to identify aeroacoustic noise sources around the vehicle, many of which were previously masked by engine noise. The Beamforming techniques are widely used methods that thanks to one or more arrays of microphones localize the noise sources on a virtual plane close to the object. However, not all the sources highlighted infiltrate the vehicle cabin and affect its acoustic comfort. Based on these considerations, the Pininfarina Wind Tunnel started a research program to determine which of the various sound sources detected by the Conventional Beamforming algorithm are correlated with a simultaneously measured reference signal inside the vehicle. This approach aims to provide more effective tools to automotive manufacturers for the development of increasingly performant and comfortable vehicles.

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