ex039900.m

来自「主要是介绍DSP算法在matlab中的实现」· M 代码 · 共 37 行

w = [-100:100]*pi/100; % frequency between -pi and +pi

N = 5;

X1 = sin((w+eps)*N/2)./sin((w+eps)/2);

N = 15;

X2 = sin((w+eps)*N/2)./sin((w+eps)/2);

N = 25;

X3 = sin((w+eps)*N/2)./sin((w+eps)/2);

N = 100;

X4 = sin((w+eps)*N/2)./sin((w+eps)/2);

subplot(1,1,1);

subplot(2,2,1);plot(w/pi,X1);grid

xlabel('frequency in pi units');title('N=5')

subplot(2,2,2);plot(w/pi,X2);grid

xlabel('frequency in pi units');title('N=15')

subplot(2,2,3);plot(w/pi,X3);grid

xlabel('frequency in pi units');title('N=25')

subplot(2,2,4);plot(w/pi,X4);grid

xlabel('frequency in pi units');title('N=100')