A KAISER WINDOW APPROACH FOR THE DESIGN OF PROTOTYPE FILTERS OF COSINE-MODULATED FILTERBANKS

The traditional designs for the prototype filters of cosine modulated filterbanks usually involve nonlinear optimizations. We propose limiti ng the search of the prototype filters to the class of filters obtaine d using Kaiser windows. The design process is reduced to the optimizat ion of a single parameter. An example will be given to show that very good designs can be obtained in spite of the limit of search.