Question

Solve It Using MATLAB.

Perform the experiment by changing the sampling frequency of the DAC block, Keep the parameters of sine wave block constant (set samples per period = 96 and sample period = 96/1000) and observe that increasing the sampling frequency is improving the waveform structure.

Answer 1

Question

Solve It Using MATLAB.

Perform the experiment by changing the sampling frequency of the DAC block, Keep the parameters of sine wave block constant (set samples per period = 96 and sample period = 96/1000) and observe that increasing the sampling frequency is improving the waveform structure.

MATLAB PROGRAM

clc;
clear all;
close all;
U=10; % range signal from 0 to 10
n=3; % number of bits
q=U/(2^n-1); % quantization interval
t=0:0.096:10; % your time vector
y=abs(10*sin(t)); % your signal
% -------convert to a digital signal yd-----------    
a=fix(y/q);
yd=dec2bin(a,n);
% ------you can calculate the signal yq ----------
yq=a*q;
%-------------------------------------------------
plot(t,y,'r')
hold on
grid on
plot(t,yq,'g')
hold off
grid on
xlabel('Time');
ylabel('Amplitude');
title('Sampling frequency 96/1000')

MATLAB PROGRAM

clc;
clear all;
close all;
%-------------------------------------------------
%Doubling the sampling frequency
%-------------------------------------------------
clc;
clear all;
close all;
U=10; % range signal from 0 to 10
n=3; % number of bits
q=U/(2^n-1); % quantization interval
t=0:0.048:10; % your time vector
y=abs(10*sin(t)); % your signal
% -------convert to a digital signal yd-----------    
a=fix(y/q);
yd=dec2bin(a,n);
% ------you can calculate the signal yq ----------
yq=a*q;
%-------------------------------------------------
plot(t,y,'r')
hold on
plot(t,yq,'g')
hold off