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Robust Relative Transfer Function Estimation for Dual Microphone-Based Generalized Sidelobe Canceller

Kihyeon KIM, Hanseok KO

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Summary :

In this Letter, a robust system identification method is proposed for the generalized sidelobe canceller using dual microphones. The conventional transfer-function generalized sidelobe canceller employs the non-stationarity characteristics of the speech signal to estimate the relative transfer function and thus is difficult to apply when the noise is also non-stationary. Under the assumption of W-disjoint orthogonality between the speech and the non-stationary noise, the proposed algorithm finds the speech-dominant time-frequency bins of the input signal by inspecting the system output and the inter-microphone time delay. Only these bins are used to estimate the relative transfer function, so reliable estimates can be obtained under non-stationary noise conditions. The experimental results show that the proposed algorithm significantly improves the performance of the transfer-function generalized sidelobe canceller, while only sustaining a modest estimation error in adverse non-stationary noise environments.

Publication
IEICE TRANSACTIONS on Information Vol.E92-D No.9 pp.1794-1797
Publication Date
2009/09/01
Publicized
Online ISSN
1745-1361
DOI
10.1587/transinf.E92.D.1794
Type of Manuscript
LETTER
Category
Speech and Hearing

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