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9348 A particle velocity based method for separating all multi incoherent sound sources

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Winkel, J.C. and Yntema, D.R. and Druyvesteyn, W.F. and de Bree, H.E. (2006) A particle velocity based method for separating all multi incoherent sound sources. In: Proceedings of the 31st FISITA World Automotive Congress, 22-27 Oct 2006, Yokohama, Japan. pp. 1-9. Society of Automotive Engineers of Japan (JSAE) and FISITA. ISBN 4-915219-83-6

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Abstract

In this paper we present a method to separate the contributions of different uncorrelated sound sources to the total sound field. When the contribution of each sound source to the total sound field is known, techniques with array-applications like direct sound field measurements or inverse acoustics methods can directly be applied for each source.
The new technique makes use of surface velocity properties without measuring background noise, using vector properties of the particle velocity whereas the sound pressure is a scalar. Our paper discusses a new technique to obtain the contribution of each source from the measured total sound field. The method includes the possibility to check if all source contributions are correctly retrieved from the total sound field.
The experiments were performed with a new experimental particle velocity sensor processed in thin film technology, able to measure four directions very close to the surface, from where the three orthogonal directions can be deduced.

Item Type:	Conference or Workshop Paper (Full Paper, Talk)
Research Group:	EWI-SAS: Signals and Systems, EWI-TST: Transducers Science and Technology
Research Program:	CTIT-UBRICKS: Building Blocks for Ubiquitous Computing and Communication
Research Project:	Inverse acoustics
Additional Information:	http://www.fisita.com/publications/bookstore?id=96
ID Code:	9348
Status:	Published
Deposited On:	13 February 2007
Refereed:	Yes
International:	Yes
More Information:	statistics metis

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