Augmented Intensity Vectors for Direction of Arrival Estimation in the Spherical Harmonic Domain

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Title: Augmented Intensity Vectors for Direction of Arrival Estimation in the Spherical Harmonic Domain
Author(s): Hafezi, S
Moore, AH
Naylor, PATRICK
Item Type: Journal Article
Abstract: Pseudointensity vectors (PIVs) provide a means of direction of arrival (DOA) estimation for spherical microphone arrays using only the zeroth and the first-order spherical harmonics. An augmented intensity vector (AIV) is proposed which improves the accuracy of PIVs by exploiting higher order spherical harmonics. We compared DOA estimation using our proposed AIVs against PIVs, steered response power (SRP) and subspace methods where the number of sources, their angular separation, the reverberation time of the room and the sensor noise level are varied. The results show that the proposed approach outperforms the baseline methods and performs at least as accurately as the state-of-the-art method with strong robustness to reverberation, sensor noise, and number of sources. In the single and multiple source scenarios tested, which include realistic levels of reverberation and noise, the proposed method had average error of 1.5∘ and 2∘, respectively.
Publication Date: 4-Aug-2017
Date of Acceptance: 22-Jul-2017
URI: http://hdl.handle.net/10044/1/56146
DOI: https://dx.doi.org/10.1109/TASLP.2017.2736067
ISSN: 1558-7916
Publisher: Institute of Electrical and Electronics Engineers
Start Page: 1956
End Page: 1968
Journal / Book Title: IEEE Transactions on Audio, Speech and Language Processing
Volume: 25
Issue: 10
Sponsor/Funder: Commission of the European Communities
Funder's Grant Number: 609465
Copyright Statement: © 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Keywords: Science & Technology
Technology
Acoustics
Engineering, Electrical & Electronic
Engineering
Direction of arrival estimation
intensity vector
localization
spherical harmonic
spherical microphone arrays
PLANE-WAVE DECOMPOSITION
ROOM IMPULSE RESPONSES
MICROPHONE ARRAYS
SOUND FIELD
DESIGN
Publication Status: Published
Appears in Collections:Faculty of Engineering
Electrical and Electronic Engineering



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