1. Tasodifiy va deteminallashgan signallarga misollar keltiring

Diskretlash jarayonini Matlab dasturida qo‘yidagicha keltirish mumkin.

clear all;

close all;

clc;

%f=input(’Chastotani kiriting‘);

f=5;

%fs=input(’Diskretlash chastotasini kiriting‘);

fs=50;% Diskretlash chastotasi 50 hz

ts=1/50;

t=0:ts:1;% 50 ta diskret namuna

x1=sin(2*pi*f*t);% bu yerda f kiruvchi signal chastotasi

subplot(3,1,1);

plot(t,x1);

hold on;

plot(t,x1,’*’);

ylabel(’amplitude’);

xlabel(’title’);

title(’Diskretlash chastotasi 50 hz signal1’);

% Diskretlash chastotasi 25 hz

fs1=25;

ts1=1/25;

t1=0:ts1:1;

x2=sin(2*pi*f*t1);

subplot(3,1,2);

plot(t1,x2);

hold on;

plot(t1,x2,’*’);

ylabel(’amplitude’);

xlabel(’title’);

title(’Diskretlash chastotasi 25 hz signal1’);

% Diskretlash chastotasi 12.5 hz

fs2=12.5;

ts2=1/12.5;

t2=0:ts2:1;

x3=sin(2*pi*f*t2);

subplot(3,1,3);

plot(t2,x3);

hold on;

plot(t2,x3,’*’);

ylabel(’amplitude’);

xlabel(’title’);

title(’Diskretlash chastotasi 12.5 hz signal1’);