Sparsity-driven separation of railway rolling noise with a microphone array

Elias Zea*, Efren Fernandez Grande, Ines Lopez Arteaga

*Corresponding author for this work

    Research output: Contribution to conferencePaperResearchpeer-review

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    Abstract

    In this paper we propose the use of sparse reconstruction methods to characterize the pass-by noise of rail-bound transportation vehicles. European trains are homologated with the TSI-NOISE legislation, which specifies the quantification of the vehicle noise alone; that is, irrespective of the track on which the vehicle is running. However, some tracks contribute significantly to the pass-by noise in mid-frequencies, leading to geographically dependent noise emissions of the same vehicle. To remove this dependency from the homologation, the track and vehicle contributions must be separated. This paper proposes the use of sparse reconstruction methods to distinguish between vehicle and rail noise. The approach is based on measurements with a microphone array near the track, and the use of dictionaries of plane waves and moving equivalent sources, to model the track and the vehicle contributions respectively. It is shown that the separated spectra agree well with the reference results predicted with the TWINS software.

    Original languageEnglish
    Publication date2020
    Number of pages2
    Publication statusPublished - 2020
    EventForum Acusticum 2020 - Virtual event
    Duration: 7 Dec 202011 Dec 2020
    https://fa2020.universite-lyon.fr/

    Conference

    ConferenceForum Acusticum 2020
    LocationVirtual event
    Period07/12/202011/12/2020
    Internet address

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