Um novo Método para Dereverberação da Fala e Redução de Ruído com Preservação Espacial em Aparelhos Auditivos Binaurais

The multichannel Wiener filter (MWF) and its versions have been extensively applied in hearing aids. Its major drawback is the binaural cue distortion of the residual noise, which impairs the user capacity for spatial localization of acoustic sources. The MWF-IC(phi_u) is a previously developed technique, which aims for joint speech dereverberation and noise reduction, while preserving the original interaural coherence of diffuse noise fields. In this work, we propose a new variation of the MWF-IC(phi_u), which preserves the original noise spatial characteristics due to an acoustic point source. This scenario is of great interest by hearing aid users.