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Biomimetic direction of arrival estimation for resolving front-back confusions in hearing aids

Archer-Boyd, Alan W.; Whitmer, William M.; Brimijoin, W. Owen; Soraghan, John J.

Authors

Alan W. Archer-Boyd

W. Owen Brimijoin

John J. Soraghan



Abstract

Sound sources at the same angle in front or behind a two-microphone array (e.g., bilateral hearing aids) produce the same time delay and two estimates for the direction of arrival: A front-back confusion. The auditory system can resolve this issue using head movements. To resolve front-back confusion for hearing-aid algorithms, head movement was measured using an inertial sensor. Successive time-delay estimates between the microphones are shifted clockwise and counterclockwise by the head movement between estimates and aggregated in two histograms. The histogram with the largest peak after multiple estimates predicted the correct hemifield for the source, eliminating the front-back confusions.

Citation

Archer-Boyd, A. W., Whitmer, W. M., Brimijoin, W. O., & Soraghan, J. J. (2015). Biomimetic direction of arrival estimation for resolving front-back confusions in hearing aids. Journal of the Acoustical Society of America, 137(5), doi:10.1121/1.4918297

Journal Article Type Article
Acceptance Date Mar 26, 2015
Online Publication Date May 6, 2015
Publication Date May 6, 2015
Deposit Date Oct 24, 2017
Publisher Acoustical Society of America
Peer Reviewed Peer Reviewed
Volume 137
Issue 5
Article Number EL360
DOI https://doi.org/10.1121/1.4918297
Public URL https://nottingham-repository.worktribe.com/output/1111274
Publisher URL https://asa.scitation.org/doi/citedby/10.1121/1.4918297