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|Title:||Towards robust multiple blind source localization using source separation and beamforming||Authors:||Pu, Henglin
|Keywords:||Engineering::Computer science and engineering||Issue Date:||2021||Source:||Pu, H., Cai, C., Hu, M., Deng, T., Zheng, R. & Luo, J. (2021). Towards robust multiple blind source localization using source separation and beamforming. Sensors, 21(2). https://dx.doi.org/10.3390/s21020532||Journal:||Sensors||Abstract:||Multiple blind sound source localization is the key technology for a myriad of applications such as robotic navigation and indoor localization. However, existing solutions can only locate a few sound sources simultaneously due to the limitation imposed by the number of microphones in an array. To this end, this paper proposes a novel multiple blind sound source localization algorithms using Source seParation and BeamForming (SPBF). Our algorithm overcomes the limitations of existing solutions and can locate more blind sources than the number of microphones in an array. Specifically, we propose a novel microphone layout, enabling salient multiple source separation while still preserving their arrival time information. After then, we perform source localization via beamforming using each demixed source. Such a design allows minimizing mutual interference from different sound sources, thereby enabling finer AoA estimation. To further enhance localization performance, we design a new spectral weighting function that can enhance the signal-to-noise-ratio, allowing a relatively narrow beam and thus finer angle of arrival estimation. Simulation experiments under typical indoor situations demonstrate a maximum of only 4∘ even under up to 14 sources.||URI:||https://hdl.handle.net/10356/147568||ISSN:||1424-8220||DOI:||10.3390/s21020532||Rights:||© 2021 The Authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).||Fulltext Permission:||open||Fulltext Availability:||With Fulltext|
|Appears in Collections:||SCSE Journal Articles|
Updated on Jun 15, 2021
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