Title: Analysis of localization cue preservation by Multichannel Wiener Filtering based binaural noise reduction in hearing aids
Authors: Cornelis, Bram
Doclo, Simon
Van den Bogaert, Tim
Moonen, Marc
Wouters, Jan #
Issue Date: Aug-2008
Host Document: Proceedings of the European Conference on Signal Processing 2008 pages:1-5
Conference: European Conference on Signal Processing edition:16 location:Lausanne, Switzerland date:25-29 august 2008
Abstract: In this paper the localization cue preservation of a noise reduction algorithm for binaural hearing aids is analyzed. In a binaural noise reduction procedure based on Multi-channel Wiener Filtering (MWF), the basic cost function is extended with terms related to the Interaural Transfer Functions (ITF) of a speech and noise source.
To make the algorithm computationally feasible, these cost terms are simplified to quadratic terms. First it is shown that this approach cannot preserve the ITF of the speech and noise component simultaneously. However, the obtained output ITF is related to the
output SNR. This will lead to a perceptually advantageous effect: a noisy output signal (low SNR) will be perceived in the direction of the noise source, while a clean output signal (high SNR) will be perceived in the direction of the speech source.
Publication status: published
KU Leuven publication type: IC
Appears in Collections:Research Group Experimental Oto-rhino-laryngology
ESAT - STADIUS, Stadius Centre for Dynamical Systems, Signal Processing and Data Analytics
# (joint) last author

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