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• W2940099105 abstract "The multi-channel Wiener filter (MWF) is a well-known multi-microphone speech enhancement technique, aiming at improving the quality of the recorded speech signals in noisy and reverberant environments. Assuming that reverberation and ambient noise can be modeled as a diffuse sound field and the spatial coherence of the residual noise is known, the MWF requires estimates of the relative early transfer function (RETF) vector of the target speaker as well as the power spectral densities (PSDs) of the target, diffuse and residual noise component. RETF vector and PSD estimation is often decoupled, where one quantity is estimated independently of the other quantity. In this paper, we propose to jointly estimate the RETF vector and all PSDs by minimizing the Frobenius norm of a model-based error matrix using an alternating least squares method. Experimental results using different dynamic acoustic scenarios with a moving speaker show that the proposed method leads to a larger MWF performance than a state-of-the-art method based on covariance whitening." @default.
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• W2940099105 date "2019-05-01" @default.
• W2940099105 modified "2023-09-30" @default.
• W2940099105 title "Joint Estimation of RETF Vector and Power Spectral Densities for Speech Enhancement Based on Alternating Least Squares" @default.
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• W2940099105 doi "https://doi.org/10.1109/icassp.2019.8683321" @default.
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