THEORETICAL ANALYSIS OF BINAURAL CUE PRESERVATION USING MULTI-CHANNEL WIENER FILTERING AND INTERAURAL TRANSFER FUNCTIONS
Simon Doclo, Thomas J. Klasen, Tim Van den Bogaert, Jan M Wouters, Marc Moonen · 2006
In this paper a theoretical analysis of the binaural cue preserva-tion of the multi-channel Wiener filter (MWF) is performed. We will prove that in the case of a single speech source the MWF perfectly preserves the binaural cues of the speech component, but changes the binaural cues of the noise component to the cues of the speech component. In addition, we show that by extend-ing the MWF cost function with terms related to the interaural transfer function it is possible to preserve the binaural cues of both the speech and the noise component, without considerably reducing the noise reduction performance. 1.