Digital Equiripple Group Delay Equalizers Using Alternating Extrema
Even order filters with equiripple group delay have been investigated. In this case the group delay has a minimum at the origin. Odd order case can be solved in the same manner, only the group delay will have a maximum at the origin. Design of an allpass filter with equiripple group delay has been achieved using alternating extrema method. The coefficients of the appropriate transfer function have been defined.
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