I have created a code to graph a function, but I want to repeat 10 times that signal every 3 sec in time in the graph, so it looks like a periodic signal, any ideas how?
2 views (last 30 days)
Show older comments
Roberto Santana
on 23 Mar 2022
Answered: Star Strider
on 24 Mar 2022
This is the code I have so far
A = 2
t = linspace(-2, 2, 1000);
a = exp(-0.5*t)
y = A*a.*(sin(2*pi*3*t)) .* (ustep(t+1)-ustep(t-1))
plot(t, y, 'LineWidth', 2)
xlabel('t');
ylabel('y');
title('L2E1');
grid on;
0 Comments
Accepted Answer
Star Strider
on 24 Mar 2022
I do not understand the units if ‘t’ so I have no idea how this corresponds to the ‘10 times every 3 sec’ requirement. I will defer to you to determine that.
This should get you started —
ustep = @(t) t>0;
A = 2;
t = linspace(-2, 2, 1000);
a = exp(-0.5*t);
y = A*a.*(sin(2*pi*3*t)) .* (ustep(t+1)-ustep(t-1));
figure
plot(t, y, 'LineWidth', 2)
xlabel('t');
ylabel('y');
title('L2E1');
grid on;
env = envelope(y, 21, 'analytic'); % Signal Envelope
Lv = env > min(env); % Extract Signal Boundaries
repeats = 10;
yv = repmat(y(Lv), 1, repeats); % Replicate Signal
tv = (0:numel(yv)-1) * (t(2)-t(1)); % Create Corresponding Time Vector
figure
plot(tv, yv)
grid
xlim([min(tv) max(tv)])
title(sprintf('Repeats = %d, Time interval: %.0f to %.1f Units', repeats, min(tv), max(tv)))
.
0 Comments
More Answers (0)
See Also
Categories
Find more on Pole and Zero Locations in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!