L1 regularisation in the inverse method for the synthesis of indoor tyre pass-by noise

Papaioannou, Athanasios, Elliott, Stephen and Cheer, Jordan (2019) L1 regularisation in the inverse method for the synthesis of indoor tyre pass-by noise. Inter-noise 2019, , Madrid, Spain. 16 Jun - 19 Aug 2019. pp. 1-11 .

Record type: Conference or Workshop Item (Paper)

Abstract

The indoor pass-by noise measurement can nowadays be realised in a laboratory environment with a stationary vehicle on a rolling road and a microphone array, according to ISO - 362-1:2016. Within this indoor testing procedure, there is also the option of evaluating the different contributions from the various noise sources on a car, for example using the inverse method with a number of sensors close to the various sources. This work assumes a 2D-tyre model to approximate the behaviour of a real car tyre at low frequencies. The inverse method is then adopted using this model for the tyre noise contribution synthesis and corresponding source strength and synthesised pressure estimates are calculated. A novel regularisation method is finally investigated to further optimise the far field pass-by noise pressure estimates.

Text

Internoise2019_L1 regularisation in the inverse method for the synthesis of indoor tyre pass-by noise

Available under License University of Southampton Accepted Manuscript Licence.

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