Application of the 1-norm regularisation techniques in estimating the indoor tyre pass-by noise contribution with the inverse method

Papaioannou, Athanasios, Elliott, Stephen and Cheer, Jordan (2019) Application of the 1-norm regularisation techniques in estimating the indoor tyre pass-by noise contribution with the inverse method. 26th International Congress on Sound and Vibration, , Montreal, Canada. 07 - 11 Jul 2019. 8 pp .

Record type: Conference or Workshop Item (Paper)

Abstract

The indoor pass-by noise measurement can nowadays be realised in a laboratory environment with a microphone array and a stationary vehicle on a rolling road, according to ISO – 362-1:2016. Within this indoor testing procedure, the different contributions from the various noise sources on a car can be estimated using an inverse method with a set of microphones 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 through the frequency range of interest.

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ICSV26_APPLICATION OF 1-NORM REGULARISATION TECHNIQUES IN ESTIMATING THE INDOOR TYRE PASS-BY NOISE CONTRI-BUTION WITH THE INVERSE METHOD - Accepted Manuscript

Available under License University of Southampton Accepted Manuscript Licence.

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