1.Design of Equiripple Linear-Phase FIR Filters Thus,weighting function can be chosen either as in the passband W()= in the stopband or W()= 6,/.in the passband in the stopband7 1. Design of Equiripple Linear-Phase FIR Filters Thus, weighting function can be chosen either as or 1, in the passband ( ) / , in the stopband p s W     / , in the passband ( ) 1, in the stopband s p W