Robustness analysis of GSVD based optimal filtering and generalized sidelobe canceller for hearing aid applications

Ann Spriet Marc Moonen Jan Wouters

To appear at Workshop on Applications of Signal Processing to Audio and Acoustics (WASPAA01), Mohonk Mountain Resort, NY, 21-24 October 2001


Multi-microphone noise reduction techniques for hearing aid applications go together with the use of small-sized arrays. Considerable noise reduction can be achieved with such arrays, but at the expense of an increased sensitivity to model errors or a priori assumptions. We evaluate the robustness of the Generalized Sidelobe Canceller (GSC) and a Generalized Singular Value Decomposition (GSVD) based optimal filtering technique both analytically and experimentally. Especially in complicated noise scenarios, the optimal filter appears to be more robust.

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