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Conference_programme: 12: Noise and vibration control

Lecture: An efficient combined active noise control and noise reduction method for hearing aids

Author(s): Albu Felix

Recently, a reduced complexity integrated noise reduction and active noise control approach has been proposed for improving speech intelligibility of digital hearing aids. The complexity reduction over the filtered-x Multichannel Wiener filter MWF (FxMWF) has been obtained using the dichotomous coordinate descent approach, but a slight performance reduction has been reported as well. In this paper, a new method based on an approximation of the autocorrelation matrix is proposed. It is shown that the proposed method has a much reduced numerical complexity, better performance/cost and memory requirements than the competing MWF based algorithms. The performance for various parameters is confirmed by different measurement metrics for a wide range of SNR values of the noisy speech.

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Corresponding author

Name: Prof Felix Albu

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Country: Romania