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  • Research Article
  • Open Access

Rate-Constrained Beamforming in Binaural Hearing Aids

EURASIP Journal on Advances in Signal Processing20092009:257197

https://doi.org/10.1155/2009/257197

Received: 1 December 2008

Accepted: 6 July 2009

Published: 25 August 2009

Abstract

Recently, hearing aid systems where the left and right ear devices collaborate with one another have received much attention. Apart from supporting natural binaural hearing, such systems hold great potential for improving the intelligibility of speech in the presence of noise through beamforming algorithms. Binaural beamforming for hearing aids requires an exchange of microphone signals between the two devices over a wireless link. This paper studies two problems: which signal to transmit from one ear to the other, and at what bit-rate. The first problem is relevant as modern hearing aids usually contain multiple microphones, and the optimal choice for the signal to be transmitted is not obvious. The second problem is relevant as the capacity of the wireless link is limited by stringent power consumption constraints imposed by the limited battery life of hearing aids.

Keywords

Information TechnologyPower ConsumptionQuantum InformationOptimal ChoiceWireless Link

Publisher note

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Authors’ Affiliations

(1)
Digital Signal Processing Group, Philips Research, Eindhoven, The Netherlands

Copyright

© S. Srinivasan and A.C. den Brinker. 2009

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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