Approaches to the remote mapping of vehicle noise sources in a reverberant environment

Papaioannou, Athanasios, Elliott, Stephen and Cheer, Jordan (2018) Approaches to the remote mapping of vehicle noise sources in a reverberant environment. International Conference on Noise & Vibration Engineering (ISMA) 2018, , Leuven, Belgium. 17 - 19 Sep 2018. 10 pp .

Record type: Conference or Workshop Item (Paper)

Abstract

In this paper, new methods for the remote acoustic source mapping of vehicle noise sources are considered. This work initially considers the effect of a wall reflection on conventional methods of processing the signals from a remote microphone array. The use of alternative array processing techniques to discriminate against the reflections are then considered, to produce a ‘heatmap’ of the array response as a noise source is moved around within the chamber. In a first step, an inverse impedance weighting strategy is considered, to distinguish the desired physical source location from the one created due to the reflections. In a second step, additional restrictions are also taken into account such as the ability of the microphone array to suppress the high levels for sources close to the microphones and an optimised weighting strategy is introduced and applied.

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ISMA2018_Athanasios_Papaioannou - Accepted Manuscript

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