Share Your Experience: Take the 2024 Developer Survey

Questions tagged [periodic]

The tag has no usage guidance.

167 questions
Filter by
Sorted by
Tagged with
1 vote
76 views

• 8,974
1k views

Fourier series of cycloid

What is the Fourier series representation of a cycloid? The parametric representation of the curve is as follows. $$t=\dfrac{\theta-\sin\theta}{\pi}\\ x=\dfrac{1-\cos\theta}{\pi}$$ The period is $2$...
• 203
235 views

Good test for periodicity between signals

I have two timeseries signals. They look like this: Each signal started out from the same array, but each received different preprocessing treatments. Ultimately, each signal represents the breathing ...
• 115
32 views

Is it important to learn to find de period of the sum fo two DT signals?

The fundamental period (N) of the sum of two DT signals could be the LCM of the fundamental periods. However, this is not always the case. I would like to know wether, during engineering design or ...
256 views

Calculate periodicity of audio signal

I have to calculate the periodicity of a audio signal like this: You can see by eye, that the volume rises the highest every second "blob". The spectogram (that is visualized ...
• 1
1 vote
67 views

Detecting periodic components in discrete-time signals [closed]

I am looking for real data examples where it is of interest to detect the presence of a periodic component of some discrete-time signal when the period of the periodic component is not known. Suppose ...
• 111
38 views

What is the value of the given periodic signal at any time, how to solve it in MATLAB?

Firstly hello all, I need help about periodic signals. I have a question as below. $x(t)$ is a periodic signal and $0.1t^3[u(t) - u(t - 7)]$ describes its one period. What is the value of $x(t)$ at ...
99 views

What should go to infinity in power's formula N or the repetition KN?

I have this question : I should now calculate power of y[n], where the formula well in the power's formula N which constant goes to infinity how could this be ? i see in the question that N=7 which ...
154 views

Why in formula of power of periodic signal is $2N+1$?

Where does $1$ come from, like from $-N$ to $N$ is $2N$ so why is $2N+1$?
3k views

• 726
Fundamental period of $x[kn]$
Let $x[n]$ be a periodic with fundamental period $N$ and $y[n] = x[kn]$ where $k \in \mathbb{N}$ and $k\ge2$. Is $y[n]$ periodic? What's the fundamental period of $y[n]$? Here is my answer: If \$N = ...