Skip to main content

Robust Distributed Noise Reduction in Hearing Aids with External Acoustic Sensor Nodes

Abstract

The benefit of using external acoustic sensor nodes for noise reduction in hearing aids is demonstrated in a simulated acoustic scenario with multiple sound sources. A distributed adaptive node-specific signal estimation (DANSE) algorithm, that has a reduced communication bandwidth and computational load, is evaluated. Batch-mode simulations compare the noise reduction performance of a centralized multi-channel Wiener filter (MWF) with DANSE. In the simulated scenario, DANSE is observed not to be able to achieve the same performance as its centralized MWF equivalent, although in theory both should generate the same set of filters. A modification to DANSE is proposed to increase its robustness, yielding smaller discrepancy between the performance of DANSE and the centralized MWF. Furthermore, the influence of several parameters such as the DFT size used for frequency domain processing and possible delays in the communication link between nodes is investigated.

Publisher note

To access the full article, please see PDF.

Author information

Affiliations

Authors

Corresponding author

Correspondence to Alexander Bertrand.

Rights and permissions

Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License (https://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Reprints and Permissions

About this article

Cite this article

Bertrand, A., Moonen, M. Robust Distributed Noise Reduction in Hearing Aids with External Acoustic Sensor Nodes. EURASIP J. Adv. Signal Process. 2009, 530435 (2009). https://doi.org/10.1155/2009/530435

Download citation

Keywords

  • Frequency Domain
  • Small Discrepancy
  • Quantum Information
  • Noise Reduction
  • Reduction Performance