The ill-conditioning problem in sound field reconstruction


Fazi, Filippo Maria and Nelson, Philip A. (2007) The ill-conditioning problem in sound field reconstruction At 123rd Convention of the Audio Engineering Society, United States. 05 - 08 Oct 2007. 12 pp.

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Description/Abstract

A method for the analysis and reconstruction of a three dimensional sound field using an array of microphones and
an array of loudspeakers is presented. The criterion used to process the microphone signals and obtain the
loudspeakers signals is based on the minimisation of the least-square error between the reconstructed and the
original sound field. This approach requires the formulation of an inverse problem that can lead to unstable solutions
due to the ill-conditioning of the propagation matrix. The concepts of generalised Fourier transform and singular
value decomposition are introduced and applied to the solution of the inverse problem in order to obtain stable
solutions and to provide a clear understanding of the regularisation method.

Item Type: Conference or Workshop Item (Paper)
Additional Information: Paper no. 7244
Venue - Dates: 123rd Convention of the Audio Engineering Society, United States, 2007-10-05 - 2007-10-08
Related URLs:
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Organisations: Acoustics Group
ePrint ID: 147331
Date :
Date Event
October 2007Published
Date Deposited: 09 Jun 2010 13:45
Last Modified: 21 Feb 2017 07:13
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/147331

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