FFT of sine function

5 vues (au cours des 30 derniers jours)
Namira
Namira le 25 Mai 2018
I am trying to plot power of sine function. When I do FFT of sine wave I got two peaks for a single sin function. I don't know understand it. Why do I get two frequency spikes from a simple sin function via FFT? How can I get only one peak for a single sin function?

Réponses (1)

sloppydisk
sloppydisk le 25 Mai 2018
You'll get both positive and negative frequencies, see
doc fft
for an example of a single-sided spectrum, i.e. only positive frequencies.

Catégories

En savoir plus sur Fourier Analysis and Filtering dans Help Center et File Exchange

Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by