Plotting a signal sin(2*pi*f*t) and obtaining a discrete periodic signal.

Given:

Discreet signal: sin((2𝜋f/fs)∙n∙T)for n=0,1,2,..

f=26;

fs=200;

n=2;

dt=0.005;

t=n*dt;

Required:

T==> I have to pick an integer value of T>1 such that sin((2𝜋f/fs)∙n∙T)is a periodic discrete signal.

How to graph periodic continuous signal sin(2𝜋ft) and periodic discrete signal sin((2𝜋f/fs)∙n∙T)

Answer 1

[Setsuna Yuuki.]

You can use plot to graph continuous signal, and stem to graph discrete signal.

For example:

t = 0:6e-2:1;
signal = sin(2*pi*t);

subplot(2,1,1)
stem(t,signal)
subplot(2,1,2)
plot(t,signal)

[Ahsan Q]

How should I go about finding the T value so that sin((2𝜋f/fs)∙n∙T) is a periodic signal. I saw that you only plotted sin(2*pi*t). Otherwise the answer is perfect!