An integrated analysis-synthesis array system for spatial sound fields

The Journal of the Acoustical Society of America
Mingsian R BaiYu-Hao Hsieh

Abstract

An integrated recording and reproduction array system for spatial audio is presented within a generic framework akin to the analysis-synthesis filterbanks in discrete time signal processing. In the analysis stage, a microphone array "encodes" the sound field by using the plane-wave decomposition. Direction of arrival of plane-wave components that comprise the sound field of interest are estimated by multiple signal classification. Next, the source signals are extracted by using a deconvolution procedure. In the synthesis stage, a loudspeaker array "decodes" the sound field by reconstructing the plane-wave components obtained in the analysis stage. This synthesis stage is carried out by pressure matching in the interior domain of the loudspeaker array. The deconvolution problem is solved by truncated singular value decomposition or convex optimization algorithms. For high-frequency reproduction that suffers from the spatial aliasing problem, vector panning is utilized. Listening tests are undertaken to evaluate the deconvolution method, vector panning, and a hybrid approach that combines both methods to cover frequency ranges below and above the spatial aliasing frequency. Localization and timbral attributes are considered in th...Continue Reading

References

May 11, 2002·The Journal of the Acoustical Society of America·Joung-Woo Choi, Yang-Hann Kim
Oct 31, 2006·The Journal of the Acoustical Society of America·Mingsian R Bai, Chih-Chung Lee
Mar 12, 2009·The Journal of the Acoustical Society of America·Jesper GomesFinn Jacobsen
Jun 17, 2010·The Journal of the Acoustical Society of America·M PolettiP A Nelson
Jan 12, 2011·The Journal of the Acoustical Society of America·Elisabet Tiana-RoigEfrén Fernández Grande
Oct 7, 2011·The Journal of the Acoustical Society of America·Geoffrey F Edelmann, Charles F Gaumond

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Citations

Nov 3, 2017·The Journal of the Acoustical Society of America·Mingsian R BaiYi-Hao Chiang

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