2.5D multizone reproduction using weighted mode matching
Date
2018
Authors
Zhang, Wen
Zhang, Junqing
Abhayapala, Thushara
Zhang, Lijun
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IEEE
Abstract
The mode matching based multizone reproduction has mainly been focused on a purely 2D theory which is inadequate to fit the 3D reality. Its extension to the 3D theory however requires many secondary sources and a high computational complexity. In this paper, a weighted mode matching approach is developed for 2.5D multizone reproduction. The multizone soundfield is reproduced in the horizontal plane within a circular control region using the loudspeakers modelled as 3D point sources. We propose weighting the Bessel-spherical harmonic modes for 2.5D reproduction and a matching between the desired and reproduced soundfields over the entire control region. Simulation results show that in comparison with the conventional 2.5D reproduction method a more accurate reproduction is achieved using the proposed weighting approach.
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2018 IEEE International Conference on Acoustics, Speech, and Signal Processing - Proceedings
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Conference paper
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2037-12-31
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