《DSP using MATLAB》Problem 5.1
恰逢清明,这几天是清明时节雪纷纷,断崖式降温;又回到了老家,儿时上蹿下跳的核桃树,远去的故乡,远去的时代……
用到的公式:
这里只放前两个小题的计算过程,都比较简单,细心就行。代码如下:
- %% ------------------------------------------------------------------------
- %% Output Info about this m-file
- fprintf('\n***********************************************************\n');
- fprintf(' <DSP using MATLAB> Problem 5.1 \n\n');
- banner();
- %% ------------------------------------------------------------------------
- % ------------------------------------
- % x1(n)
- % ------------------------------------
- xn = [4, 1, -1, 1]; N =4;
- Xk_1 = dfs(xn,N)
- % ------------------------------------
- % x2(n)
- % ------------------------------------
- xn = [2, 0, 0, 0, -1, 0, 0, 0]; N = 8;
- Xk_2 = dfs(xn,N)
- % ------------------------------------
- % x3(n)
- % ------------------------------------
- xn = [1, 0, -1, -1, 0]; N = 5;
- Xk_3 = dfs(xn,N)
- % ------------------------------------
- % x4(n)
- % ------------------------------------
- xn = [0, 0, 2*j, 0, 2*j, 0]; N = 6;
- Xk_4 = dfs(xn,N)
- % ------------------------------------
- % x5(n)
- % ------------------------------------
- xn = [3, 2, 1]; N = 3;
- Xk_5 = dfs(xn,N)
运行结果:
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