This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
An Efficient Procedure for Visualizing the Sound Field Radiated by Vehicles During Standardized Passby Tests
Technical Paper
1999-01-1741
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Spherical beamforming was used to visualize sound radiation during a vehicle passby test. Forward and backward propagation procedures are compared in terms of computational expense. A spherical spreading correction factor is described, along with a maximum liklihood procedure for obtaining an optimal array weighting dependent on the relative distance between the microphones and the focus point. The de-Dopplerized microphone outputs are multiplied by the weighting factors and summed to yield the source strengths over a reconstruction plane “attached” to the vehicle. Results obtained using a 16 element sparse array during an actual passby are used to demonstrate the present approach.
Recommended Content
Technical Paper | The Design and Evaluation of Microphone Arrays for the Visualization of Noise Sources on Moving Vehicles |
Technical Paper | Visualization of Truck Interior Noise |
Technical Paper | Optimal Traceability for IMA System-of-Systems |
Authors
Topic
Citation
Kook, H., Moebs, G., Davies, P., and Bolton, J., "An Efficient Procedure for Visualizing the Sound Field Radiated by Vehicles During Standardized Passby Tests," SAE Technical Paper 1999-01-1741, 1999, https://doi.org/10.4271/1999-01-1741.Also In
References
- Cherne, K.D. “Motor Vehicle Noise Regulations,” Proceedings of the 1993 Noise and Vibration Conference SAE P-264 147 152 1993
- Moebs, G.B. Kook, H. Davies, P. Bolton J.S. “The Use of Two-Dimensionally Sparse Arrays to Visualize the Sound Field Radiated by a Moving Vehicle, with Application to Motor Vehicle Passby Testing,” Proceedings of Noise-Con 98 Ypsilanti, Michigan April 5-9 519 524 1998
- King W.F. III, Lettmann, H.J. “On Locating and Identifying Sound Sources Generated by the German ‘ICE’ Train at Speeds up to 300 km/h,” Proceedings of INTER-NOISE 88 1391 1396 1988
- Elias, G. “Source Localization with a Two-Dimensional Focused Array: Optimal Signal Processing for a Cross-Shaped Array,” Proceedings of INTER-NOISE 95 1175 1178 1995
- Abe, M. Liu, J. Kido, K. “An Application of Composite Complex Sinusoidal Modeling to the Estimation of Directions and Wave Forms of Incident Plane Waves,” Proceedings of INTER-NOISE 88 159 162 1988
- Barsikow, B. King W.F. III, Lettmann, H.J. “De-Dopplerizaion of Sound Radiated by Moving Sources Measured with Stationary Microphone Array,” Proceedings of INTER-NOISE 88 167 170 1988
- Dumbacher, S. Blough, J. Hallman, D. Wang, P. “Source Identification Using Acoustic Array Techniques,” Proceedings of the 1995 Noise and Vibration Conference SAE P-291 1023 1035 1995
- Vertatschitsch, E. Haykin, S. “Nonredundant Arrays,” Proceedings of the IEEE 74 217 1986
- Brühl, S. Schmitz, K.-P. “Noise Source Localization on Highspeed Trains Using Different Array Types,” Proceedings of INTER-NOISE 93 1311 1314 1993
- Johnson, D.H. Dudgeon, D.E. Array Signal Processing-Concepts and Techniques Prentice Hall NJ 1993
- Moebs, G.B. De-Dopplerization and Visualization of Sound Fields Emitted by Moving Noise Sources School of Mechanical Engineering, Purdue University 1997
- Howell, G.P. Bradley, A.J. McCormick, M.A. Brown, J.D. “De-Dopplerization and Acoustic Imaging of Aircraft Flyover Noise Measurements,” Journal of Sound and Vibration 105 151 167 1986
- Lancaster, P. Šalkauskas, K. Curve and Surface Fitting Academic Press London 1986
- Kook, H. Davies, P. Bolton, J.S. “The Design and Evaluation of Microphone Arrays for the Visualization of Noise Sources on Moving Vehicles,” SAE Paper 99NV-227 Proceedings of the 1999 Noise and Vibration Conference 1999
- Sandberg, U. Ejsmont, J.A. “The Art of Measuring Noise from Vehicle Tires,” Proceedings of the 1993 Noise and Vibration Conference SAE P-264 93 111 1993