7.1 Linear-phase FIR transfer function o Type 1 FIR Transfer Function The impulse response of a Type1 FIR transfer function is of odd length that is the degree n is even and satisfies the symmetry condition Its amplitude response Hg (a)is given by N M-1 Hg(o)=h +∑2h(n)oso(m-7.1 Linear-phase FIR transfer function  Type 1 FIR Transfer Function The impulse response of a Type1 FIR transfer function is of odd length, that is, the degree N is even and satisfies the symmetry condition. Its amplitude response Hg(ω) is given by ( ) ( ) ( ) 1 0 1 2 cos 2 M g n N H h h n n    − =   − = + −         