The Design and Evaluation of Microphone Arrays for the Visualization of Noise Sources on Moving Vehicles

H. Kook; P. Davies; J. S. Bolton

doi:10.4271/1999-01-1742

1999-05-17

The Design and Evaluation of Microphone Arrays for the Visualization of Noise Sources on Moving Vehicles 1999-01-1742

The present work was directed towards the design of a sideline microphone array specifically adapted to the visualization of automotive noise sources in the 500 Hz to 2000 Hz range. The particular design philosophy followed here involved the minimization of the array redundancy: i.e., the minimization of the number of pairs of microphones that are separated by the same distance in the same directions. The performance of sixty-four element microphone arrays designed according to this principle will be illustrated through the use of simulated motor vehicle passbys. In addition, their performance will be compared with more conventional array designs: e.g., elliptical, and spiral arrays.

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The Design and Evaluation of Microphone Arrays for the Visualization of Noise Sources on Moving Vehicles 1999-01-1742

SAE MOBILUS