...w :通带截频 N :阶数 ( 由阻带指标确定 ) 性质 1 )在c w w 0 时, 2 ) ( w j H在1和2 1 1 + 间振荡 (equiripple filter) 2) c w w 时, 2 ) ( w j H 单调下降 ( N 增大,下降加速) 3) 2 2 1 1 ) ( w + = c j H 控制了通带衰减 N 为奇时 1 ) 0 ...
The approximation method based on non-equiripple is an intermediary between equiripple approximation and maximally flat approximation. It is quite useful for filter design.