{HEAD ~ A digital FIR filter} for producing an L phase interpolation of {TAIL ~ a input sample} ##STR1## based on L filter banks and n tap coefficients P1 in each 1th one of the filter banks is disclosed, where 1≦1≦L and where 0≦i≦ 
{ HEAD ~ A digital FIR filter } for producing an L phase interpolation of { TAIL ~ a input sample } # # STR1 # # based on L filter banks and n tap coefficients P1 in each 1th one of the filter banks is disclosed , where 1≦1≦L and where 0≦i≦
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