7.1 Linear-phase FIR transfer function o type 3 FIR Transfer Function The impulse response of a Type3 FiR filter is of even length that is, the degree n is odd and satisfies the antisymmetry condition its amplitude response Hg(o) is given by 1(o)=∑2h(m)sio(n-)]7.1 Linear-phase FIR transfer function  Type 3 FIR Transfer Function The impulse response of a Type3 FIR filter is of even length, that is, the degree N is odd and satisfies the antisymmetry condition. Its amplitude response Hg(ω) is given by ( ) ( ) ( ) 1 0 2 sin M g n H h n n    − = = −     