Robust non-vad implementation of Multichannel Wiener filter for binaural noise reduction

Binaural noise-reduction techniques based on Multichannel Wiener filter (MWF) are promising candidates to be used in binaural hearing aids. The real-time implementation of the existing MWF methods involves different challenges, e.g. the robustness against errors in the estimation of the second-order...

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Bibliographic Details
Main Authors: Marin-Hurtado, J. I., Anderson, D. V.
Format: Conference Proceeding
Language:English
Subjects:
Acoustic distortion
Binaural hearing aids
Estimation
Hearing aids
Multichannel cross-PSD
Multichannel Wiener Filter
Noise reduction
Signal to noise ratio
Speech
Online Access:Request full text
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Summary:Binaural noise-reduction techniques based on Multichannel Wiener filter (MWF) are promising candidates to be used in binaural hearing aids. The real-time implementation of the existing MWF methods involves different challenges, e.g. the robustness against errors in the estimation of the second-order statistics. A typical approach in MWF to estimate these statistics has been the use of a voice activity detector (VAD). But a VAD-based estimation is not particularly suitable for low SNR scenarios, or to track the noise statistics in non-stationary environments during voiced segments. This paper proposes a non-VAD statistics estimation and a method to adapt the trade-off parameter in a well-known MWF method, SDW-MWF. The performance of the proposed implementation is analyzed under realistic scenarios. The proposed method outperforms a VAD-based implementation, is robust under low-SNR and non-stationary environments, and provides good speech quality.
ISSN:1931-1168
1947-1629
DOI:10.1109/ASPAA.2011.6082337