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.
Name: Prof Felix Albu