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Convention Paper

Coding Strategies for Multichannel Wiener Filters in Binaural Hearing Aids

Authors: Gil-Pita, Roberto; Lopez-Garrido, Beatriz; Rosa-Zurera, Manuel

AES Convention 143 · Paper 9896 · October 2017

Abstract

Binaural hearing aids use sound spatial techniques to increase intelligibility, but the design of the algorithms for these devices presents strong constraints. To minimize power consumption and maximize battery life, the digital signal processors embedded in these devices have very low frequency clocks and low amount of available memory. In the binaural case the wireless communication between both hearing devices also increases the power consumption, making necessary the study of relationship between intelligibility improvement and required transmission bandwidth. In this sense, this paper proposes and compares several coding strategies in the implementation of binaural multichannel Wiener filters, with the aim of keeping minimal communication bandwidth and transmission power. The obtained results demonstrate the suitability of the proposed coding strategies.

Details

Published in
AES Convention 143
AES Convention
143
Paper number
9896
Publication date
October 6, 2017
Session subject
Spatial Audio—Part 2
Affiliation
University of Alcalá, Alcalá de Henares, Madrid, Spain; Servicio de Salud de Castilla la Mancha (SESCAM), Castilla-Mancha, Spain (See document for exact affiliation information.)
Type
Convention Paper