fwind2函数的使用
[f1,f2] = freqspace(80);
H = zeros(80);
r = sqrt(f1.^2 + f2.^2);
H((r<0.1)|(r>0.5)) = 0;
win=hamming(23);
b = fwind2(f1,f2,H,win);
Z=filter2(b,Y);
运行为什么跳出
??? b = fwind2(f1,f2,H,win);
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Error: Missing variable or function.
请帮我修改一下.