@inbook{ author = {K.U. Simmer and J. Bitzer, C. Marro}, year = {2001}, month = {May}, title = {Post-filtering Techniques}, editor = {Brandstein, M., Ward, D.}, publisher = {Springer}, pages = {39-57}, address={Berlin, Heidelberg, New York}, abstract={In the context of microphone arrays, the term post-filtering denotes the post-processing of the array output by a single-channel noise suppression filter. A theoretical analysis shows that Wiener post-filtering of the output of an optimum distortionless beamformer provides a minimum mean squared error solution. We examine published methods for post-filter estimation and develop a new algorithm. A simulation system is presented to compare the performance of the discussed algorithms. }, booktitle={Microphone Arrays} }