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A procedure is developed to design IIR synthesis filters in a multirate filter bank. The filters minimize the l/sub 2/-induced norm of the error system between the multirate filter bank and a desired pure time-delay system. This criterion is reduced to one of /spl Hscr//sub /spl infin// optimization, for which there is ready-made software.
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Chen et al. (1995) studied this question.
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