MATLAB Answers

How I can filter these data pressure?

조회 수: 9(최근 30일)
bayran arrieta
bayran arrieta 15 Sep 2016
댓글: Walter Roberson 15 Sep 2016
I need to remove noise

  댓글 수: 1

Walter Roberson
Walter Roberson 15 Sep 2016
The noise is polyphasic hypergeometric with nu = 7/2 and z = 0.7384519, sum of 11 terms, right ?

댓글을 달려면 로그인하십시오.

답변(1개)

Star Strider
Star Strider 15 Sep 2016
You first need to do a Fourier transform on your signal to see the frequency content of it. See the R2015a documentation for fft (link). Particularly note the code between the first two (top two) plot figures.
If your data have frequency-limited noise, you can probably filter most of it out. There are several ways to design filters in MATLAB, including designfilt. My procedure for designing IIR filters is here: How to design a lowpass filter for ocean wave data in Matlab?
If you have broadband noise, you will have to use a different procedure. The Savitzky-Golay filter (the sgolayfilt function) is probably your best option.

  댓글 수: 0

댓글을 달려면 로그인하십시오.

제품

Community Treasure Hunt

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

Start Hunting!

Translated by