NDLI: Masked beamforming in frequency domain for hybrid acoustic vector sensor array

Content Provider	IET Digital Library
Author	Lee, H. J. Lee, K. K.
Abstract	A masked beamforming algorithm for a hybrid acoustic vector sensor array (AVSA) is presented. In the general literature, a full-rank AVSA, comprised entirely of an acoustic vector sensor (AVS), is known to be capable of left–right ambiguity elimination. However, a full-rank AVSA has disadvantages including rotation perturbation of sensor directivity, complexity of electrical loading, and high cost. To alleviate these disadvantages, a hybrid AVSA consisting of only a single AVS in an array of omni-directional sensors is reported in the patent with a limited performance in left–right ambiguity elimination. A masked beamforming algorithm is proposed to achieve good left–right ambiguity elimination performance in a hybrid AVSA by masking the beam output spectrum of the omni-directional sensor array with the beam output spectrum of an AVS in the frequency domain. Simulation results that validate the performance of the proposed method are also presented.
Starting Page	939
Ending Page	941
Page Count	3
ISSN	00135194
Volume Number	54
e-ISSN	1350911X
Issue Number	Issue 15, Jul (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/el/54/15
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/el.2018.0121
Journal	Electronics Letters
Publisher Date	2018-06-12
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Acoustic Signal Processing Array Signal Processing Digital Signal Processing Frequency Domain Frequency Domain Analysis Full-rank AVSA Hybrid Acoustic Vector Sensor Array Hybrid AVSA Left-right Ambiguity Elimination Performance Left–right Ambiguity Elimination Masked Beamforming Algorithm Mathematical Analysis Omnidirectional Sensor Array Rotation Perturbation Sensor Directivity Signal Processing And Detection
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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