NDLI: A constrained optimization approach for multi-zone surround sound

Content Provider	IEEE Xplore Digital Library
Author	Betlehem, T. Teal, P.D.
Copyright Year	2011
Description	Author affiliation: Industrial Research Ltd, PO Box 31-310, Lower Hutt, New Zealand (Betlehem, T.) \|\| Victoria University of Wellington, P.O. Box 600, New Zealand (Teal, P.D.)
Abstract	A recent approach to surround sound is to perform exact control of the sound field over a region of space. Here, the driving signals for an array of loudspeakers are chosen to create a desired sound field over an extended area. An interesting subtopic is multi-zone surround sound, where two or more listeners can experience totally independent sound fields. However, multi-zone surround sound is a challenge because implementation can be very non-robust. We formulate multi-zone sound reproduction as a convex optimization problem, where the sound energy leakage into other listener zones is limited to fixed levels, and a constraint is placed on the loudspeaker weights to improve the robustness. An interior point algorithm is devised for computing the loudspeaker weights, and its performance is compared with least squares approaches of multi-zone reproduction in typical two-zone cases.
Starting Page	437
Ending Page	440
File Size	323112
Page Count	4
File Format	PDF
ISBN	9781457705380
ISSN	15206149
e-ISBN	9781457705397
e-ISBN	9781457705373
DOI	10.1109/ICASSP.2011.5946434
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-05-22
Publisher Place	Czech Republic
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Loudspeakers Acoustics Convex functions Robustness Manganese Arrays Optimization
Content Type	Text
Resource Type	Article

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