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Beamforming Quantification of Acoustic Transmission Paths for Passenger Vehicles Using a Reciprocal Approach
Technical Paper
2023-01-1090
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This paper presents an experimental method for measuring transmission paths from the exterior to the interior of a passenger vehicle using a reciprocal approach: A production vehicle was placed in a semi-anechoic environment; artificial noise sources were placed at the location of the occupant’s ear(s) inside the vehicle and beamforming arrays with a total of more than 300 microphones were used to observe apparent noise sources on the vehicle exterior resulting from transmission paths. This makes it possible to quickly measure transmission paths over the whole vehicle body.
One of the motivations for this work is the monitoring of sealing quality on production vehicles. Artificial seal breaches were introduced on the vehicle and a number of excitation signals were assessed to develop a method to detect and localise leakage noise sources.
The investigation and methodology demonstrate the potential for the use of reciprocal beamforming to detect acoustic transmission paths with a view to identifying errors that would impact a vehicle’s wind noise performance, for instance in a manufacturing environment. In addition, it also shows benefits in the use of a similar approach for detecting non-leakage transmission weaknesses, which has applications including the comparison of the isolation performance of various vehicles to external noises.
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Citation
Oettle, N., Graham, S., Sims-Williams, D., Riegel, M. et al., "Beamforming Quantification of Acoustic Transmission Paths for Passenger Vehicles Using a Reciprocal Approach," SAE Technical Paper 2023-01-1090, 2023, https://doi.org/10.4271/2023-01-1090.Also In
References
- Attenborough , K. 2014 117 155
- Benham-Crosswell , T. 2020
- Blumrich , R. , Widdecke , N. , Wiedemann , J. , Michelbach , A. et al. New FKFS Technology at the Full-Scale Aeroacoustic Wind Tunnel of University of Stuttgart SAE Int. J. Passeng. Cars - Mech. Syst. 8 1 2015 294 305 https://doi.org/10.4271/2015-01-1557
- Blumrich , R. , Riegel , M. , Oettle , N. , Vickers , H. et al. A Comparison of Wind Tunnel Array-Based Aeroacoustic Measurement Techniques International Conference on Vehicle Aerodynamics 2018 Birmingham 2018
- Christensen , J. and Hald , J. 2004
- Ginn , K.B. and Haddad , K. Noise Source Identification Techniques: Simple to Advanced Applications d’Acoustique , S.F. Acoustics 2012 Nantes, France 2012 https://hal.archivesouvertes.fr/hal-00810618
- Graham , J. 2018
- Greensted , A. 2012 http://www.labbookpages.co.uk/audio/beamforming/delaySum.html
- Keysight Technologies https://www.keysight.com/us/en/assets/7018-01868/datasheets/5989-8926.pdf
- Kim , B.S. , Kim , G.J. , and Lee , T.K. The Identification of Tyre Induced Vehicle Interior Noise Applied Acoustics 68 1 2007 134 156
- Künstner , R. , Potthoff , J. , and Essers , U. The aero-acoustic wind tunnel of Stuttgart University SAE Technical Paper 950625 1995 https://doi.org/10.4271/950625
- Kumar , A. 2019
- Lim , J.S. and Oppenheim , A.V. Advanced Topics in Signal Processing Prentice Hall 1988
- Norton , M.P. and Karczub , D.G. Fundamentals of Noise and Vibration Analysis for Engineers Cambridge University Press 2003
- Oettle , N. and Sims-Williams , D. Automotive Aeroacoustics: An Overview Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 231 9 2017 1177 1189
- Oettle , N. , Powell , R. , Senthooran , S. , and Moron , P. A Computational Process to Effectively Design Seals for Improved Wind Noise Performance SAE Int. J. Adv. & Curr. Prac. in Mobility 1 4 2019 1690 1697 https://doi.org/10.4271/2019-01-1472
- Riegel , M. , Blumrich , R. , Minck , O. , Verrecas , B. et al. New Large Microphone Array at the FKFS Wind Tunnel 12th FKFS Conference Stuttgart 2019
- Siemens Digital Industries Software 2019
- Sims-Williams , D. , Kounenis , C. , Dominy , R. , and Oettle , N. Three Dimensional Beamforming for Improved Noise Source Localisation Wiedemann , J. 10th FKFS Conference Progress in Vehicle Aerodynamics and Thermal Management 2015 17 29
- Tectonic Audio Labs https://docs.rsonline.com/e6d0/0900766b816b9921.pdf
- Verrecas , B. , Oettle , N. , and McQueen , A. The Application of Spherical Beamforming Techniques to Localize Aero-Acoustic Sound Sources in the Vehicle Cabin International Conference on Vehicle Aerodynamics 2014 Loughborough 2014
- Vickers , H. 2017
- Wong , G. , Embleton , T. , and Blaeser , S. 2004