《DSP using MATLAB》示例Example4.4

Posted 2020-08-21 沧海一粟

 

代码：

x1 = [2, 3, 4]; x2 = [3, 4, 5, 6];            % x1 x2 sequences
% n1 = 0:1:2; n2 = 0:1:3;
n1 = 0:1:length(x1)-1; n2 = 0:1:length(x2)-1;

[x3, n3] = conv_m(x1, n1, x2, n2);

figure(\'NumberTitle\', \'off\', \'Name\', \'Example4.4 x1 & x2 sequence\')
set(gcf,\'Color\',\'white\'); 
subplot(2,1,1); stem(n1,x1); title(\'x1 sequence \');   xlabel(\'n\'); ylabel(\'x1(n)\'); grid on;
subplot(2,1,2); stem(n2,x2); title(\'x2 sequence \');   xlabel(\'n\'); ylabel(\'x2(n)\'); grid on;

figure(\'NumberTitle\', \'off\', \'Name\', \'Example4.4 x3 sequence\')
set(gcf,\'Color\',\'white\'); 
stem(n3,x3); title(\'x3 sequence\'); xlabel(\'n\'); ylabel(\'x3(n)\'); grid on;

　　运行结果：