This paper proposes a new multichannel hybrid method for dereverberation of speech signals in noisy environments. This method extends the use of a hybrid noise reduction method for dereverberation which is based on the combination of Generalized Sidelobe Canceller (GSC) and a single-channel noise reduction stage. In this research, we employ Transfer Function GSC (TF-GSC) that is more suitable for dereverberation. The single-channel stage is an Adaptive Minimum Mean-Square Error (AMMSE) spectral amplitude estimator. We also modify the AMMSE estimator for dereverberation application. Experimental results demonstrate superiority of the proposed method in dereverberation of speech signal in noisy environments.
Bibliographic reference. Dashtbozorg, Behdad / Abutalebi, Hamid Reza (2009): "Joint noise reduction and dereverberation of speech using hybrid TF-GSC and adaptive MMSE estimator", In INTERSPEECH-2009, 1355-1358.