?? gen_zero.m
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% Chapter 7 Matlab Figure on % A general Zero Constellation%subplot(1,1,1)r = 0.6; theta = 50*pi/180;z1 = r*exp(j*theta); % an arbitrary zero locationz2 = 1/z1; % a linear-phase zero locationz3 = conj(z1); % a conjugate zero locationz4 = 1/z3; % a linear-phase conjugate zero locationb = poly([z1,z2,z3,z4]);pzplotz(b,1)text(real(z1)-0.1,imag(z1)+0.15,'z1')text(real(z3)-0.2,imag(z3)-0.15,'conj(z1)')text(real(z2)-0.1,imag(z2)+0.15,'1/z1')text(real(z4)-0.2,imag(z4)-0.15,'1/conj(z1)')
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