Update experiment

1 - experiment/Circulant Matrix/circulant_matrix.m

@@ -4,22 +4,24 @@ clear;
 
 N = 100;
 eps = 1e-10;
+
+% 生成傅里叶矩阵
 F_n = dftmtx(N);
 
+% 输出傅里叶矩阵
 for i = 1: N
     for j = 1: N
         fprintf(string(F_n(i, j)) + ", ");
     end
     fprintf("\b\b\n");
 end
-
 fprintf("\n");
 
-% 检查傅里叶矩阵的正确性
+% 检查傅里叶矩阵
 assert(abs(F_n(2, 2) ^ 2 - F_n(2, 3)) < eps);
 assert(abs(F_n(2, 2) ^ N - 1) < eps);
 
-%% 检查循环卷积
+%% 循环卷积
 x = randn(N, 1);
 z = randn(N, 1);
 p = cconv(x, z, N);
@@ -33,11 +35,11 @@ for i = 1: N
     assert(abs(tmp - p(i)) < eps);
 end
 
-% 检查 x * z = A(x)z 的正确性
+% 检查 x * z = A(x)z
 A_x = toeplitz([x(1) fliplr(x(2:end)')], x);
 assert(is_vector_equal(p, A_x' * z, eps));
 
-% 检查卷积定理的正确性
+% 检查卷积定理
 x_hat = fft(x);
 z_hat = fft(z);
 xz_hat = fft(p);