Does dereverberation help multichannel blind source separation? A study case
Résumé
Multichannel blind source separation performances rapidly
degrade when the mixtures are highly reverberated. In fact,
blind source separation algorithms usually focus on the separation
task without dealing with the dereverberation problem.
Some recent studies attempted to reduce the reverberation by
introducing a dereverberation module before or after the blind
source separation but only limited success was obtained in
improving the separation performance in highly reverberant
rooms. In this article, we conduct a number of experiments
combining state of the art spectral enhancement-based dereverberation
and source separation algorithms showing that,
in this particular case, speech enhancement does not improve
the performance of blind source separation.
Index Terms— Blind source separation, speech