代码：

%

x = [-0.9, 0.81]; [y, L, B] = QCoeff(x, 3) 

% Unquantized parameters

r = 0.9; theta = pi/3; a1 = -2*r*cos(theta); a2 = r*r;

p1 = r*exp(j*theta); p2 = p1';

% Quantized parameters: N = 3;

[ahat, L, B] = QCoeff([a1, a2], 3); rhat = sqrt(ahat(2));

thetahat = acos(-ahat(1)/(2*rhat)); p1hat = rhat*exp(j*thetahat); p2 = p1';

% Changes in pole locations

Dp1 = abs(p1 - p1hat)

Dp1 = 0.0344

　　运行结果：

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