Minimization maximum design method for alternating DFT modulation filter banks
A minimax and filter bank technology, applied in impedance networks, digital technology networks, electrical components, etc., which can solve the problems of difficult simultaneous control of frequency characteristics and reconstruction characteristics.
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[0043] A minimum-maximum design method for alternating DFT modulated filter banks, comprising the steps of:
[0044] Step 1: The structure of the alternating DFT modulated filter bank is as figure 1 As shown, each subband filter of this alternating DFT modulated filter bank is expressed as a function of the prototype filter:
[0045] p 2 k ( n ) = p 0 ( n ) W M - 2 kn , ...
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