Estimating Contributions of Vehicle Pass-by Noise Sources English Free Members only

  • Category Technical paper
  • Related event International Congress : Automotive NVH comfort - 22 & 23 October 2014
  • Edition SIA
  • Date 10/22/2014
  • Author A. Schuhmacher - Brüel & Kjaer Sound & Vibration Measurement | E. Varricchio - Fiat Group Automobiles
  • Language English
  • Type PDF file (850.14 Ko)
    (Downloadable immediately on receipt of online payment)
  • Number of pages 8
  • Code R-2014-09-25
  • Fee Free

This paper deals with the source separation task related to indoor pass-by noise tests. Several different approaches are discussed. The classical transfer path modelling concept making use of operational data together with acoustic transfer functions is explained and a time-domain implementation is verified for a real operating vehicle. Pass-by noise contribution from components such as engine, intake and tyres are estimated and ranked as a result of such processing. Another and completely different source separation methodology is introduced in terms of a blind source separation method for clear separation of tyre noise from engine related noise. Features of the two methods are discussed and results for the same indoor pass-by dataset presented.