Analyze a Signal using Matlab

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collegestudent
collegestudent el 27 de En. de 2023
Comentada: Rena Berman el 8 de Feb. de 2023
I have a code that plots a signal and i want to know if there are ways to analyze features of the signal.
I am looking to find
  1. the time between sampled points
  2. fundamental frequency of signal
  3. fundamental angular frequency of signal
  4. max value of t in plot
  5. number of cycles plotted
This is my code
fs = 400;
N = 800;
f = 4;
t = (1:N)/fs;
x = sin(2*pi*f*t);
plot(t,x,'k','LineWidth',2);
xlabel('Time'); ylabel('x(t)');
  2 comentarios
John D'Errico
John D'Errico el 27 de En. de 2023
Editada: John D'Errico el 27 de En. de 2023
When you remove your question after getting an answer, you insult the person who spent the time to answer you. You hurt Answers, because now the answer is useless to anyone else.
And this is a big reason whi I am forced to close so many homework assignment questions when they are posted. Restored from Google cache:
I have a code that plots a signal and i want to know if there are ways to analyze features of the signal.
I am looking to find
  1. the time between sampled points
  2. fundamental frequency of signal
  3. fundamental angular frequency of signal
  4. max value of t in plot
  5. number of cycles plotted
This is my code
fs = 400;
N = 800;
f = 4;
t = (1:N)/fs;
x = sin(2*pi*f*t);
plot(t,x,'k','LineWidth',2);
xlabel('Time'); ylabel('x(t)');
Rena Berman
Rena Berman el 8 de Feb. de 2023
(Answers Dev) Restored edit

Iniciar sesión para comentar.

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Nikhilesh
Nikhilesh el 27 de En. de 2023
Seems this is a theoretical question of signals and not pertaining use of MATLAB. I am answering two of the five and rest you should be able to do it on your own.
  1. The time between sampled points can be calculated by taking the reciprocal of the sampling frequency (fs), which in this case is 1/400 seconds.
  2. The fundamental frequency of the signal can be found by dividing 1 by the period of the signal. In this case, the signal is a sine wave with a frequency of 4 Hz, so the fundamental frequency is also 4 Hz.

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