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

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

Research output: Contribution to journalArticle

5 Citations (Scopus)

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.
LanguageEnglish
PagesEL360-EL366
Number of pages7
JournalJournal of the Acoustical Society of America
Volume137
Issue number5
DOIs
Publication statusPublished - 1 May 2015

Fingerprint

Hearing aids
Direction of arrival
confusion
head movement
biomimetics
Biomimetics
Microphones
hearing
arrivals
Time delay
estimates
microphones
histograms
time lag
Acoustic waves
Sensors
acoustics
Hearing Aids
Biomimetic
Head Movement

Keywords

  • gyroscope motion
  • microphones
  • microelectromechanical systems
  • interpolation
  • hearing aids

Cite this

Archer-Boyd, Alan W. ; Whitmer, William M. ; Brimijoin, W. Owen ; Soraghan, John J. / Biomimetic direction of arrival estimation for resolving front-back confusions in hearing aids. In: Journal of the Acoustical Society of America. 2015 ; Vol. 137, No. 5. pp. EL360-EL366.
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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.

In: Journal of the Acoustical Society of America, Vol. 137, No. 5, 01.05.2015, p. EL360-EL366.

Research output: Contribution to journalArticle

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