Decoupled direction-of-arrival estimations using relative harmonic coefficients

Yonggang Hu, Thushara D. Abhayapala, Prasanga N. Samarasinghe, Sharon Gannot

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Scopus citations


Traditional source direction-of-arrival (DOA) estimation algorithms generally localize the elevation and azimuth simultaneously, requiring an exhaustive search over the two-dimensional (2-D) space. By contrast, this paper presents two decoupled source DOA estimation algorithms using a recently introduced source feature called the relative harmonic coefficients. They are capable to recover the source's elevation and azimuth separately, since the elevation and azimuth components in the relative harmonic coefficients are decoupled. The proposed algorithms are highlighted by a large reduction of computational complexity, thus enable a direct application for sound source tracking. Simulation results, using both a static and moving sound source, confirm the proposed methods are computationally efficient while achieving competitive localization accuracy.

Original languageEnglish
Title of host publication28th European Signal Processing Conference, EUSIPCO 2020 - Proceedings
PublisherEuropean Signal Processing Conference, EUSIPCO
Number of pages5
ISBN (Electronic)9789082797053
StatePublished - 24 Jan 2021
Event28th European Signal Processing Conference, EUSIPCO 2020 - Amsterdam, Netherlands
Duration: 24 Aug 202028 Aug 2020

Publication series

NameEuropean Signal Processing Conference
ISSN (Print)2219-5491


Conference28th European Signal Processing Conference, EUSIPCO 2020

Bibliographical note

Funding Information:
This project has received funding from the European Unions Horizon 2020 Research and Innovation Programme, Grant Agreement No. 871245. Yonggang Hu is sponsored by CSC agency for funding.

Publisher Copyright:
© 2021 European Signal Processing Conference, EUSIPCO. All rights reserved.


  • DOA tracking
  • Decoupled DOA estimation
  • Fast speed
  • Relative harmonic coefficients


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