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}