Basic signal - Sa function (sampled signal)

The sampling function refers to the function composed of the ratio of sint to t, which is defined as follows: Sa(t)=sint / t

The sampling function has the following properties: Sa(0)=1;

                                       Sa(kπ)=0，k=±1，±2，...

                                                                             

The matlab program is as follows: 

%抽样信号Sa(t)
clc;
clear;
close all;
t=-3*pi:pi/100:3*pi;
ft=sinc(t/pi);
plot(t,ft);

The result of the operation is as follows:

 

 References: Signals and Systems (2nd Edition) - edited by Chen Houjin