Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Wide frequency spectrum problem

  1. Mar 18, 2013 #1
    Hi all,

    I am putting here my question since i think it has relation with the harmonic analysis.

    I am using matlab to solve a difference equation and i am getting a pretty random oscillation in the result. The data FFT shows that i have a very wide spectrum of harmonics with not very much distinctive peaks.

    My problem is how can i decide what kind of behavior i have here. The possibilities i have thought for my signal is to be white noise, chaotic behavior or that has a normal distribution(it looks like that but....)

    Since there is not expression of the equation, and i have only its data how can we tell what kind of behavior we are dealing with?! I know that it is a huge chapter with many things to discuss but since i have only the above resources what can i do?

    Thank you very much!
  2. jcsd
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted