Clear Filters
Clear Filters

How does filter function works?

7 views (last 30 days)
khatereh
khatereh on 13 Dec 2011
Hi,
I used edit filter to see how does it work but I did not find any relative information. I used FIR filter filter(b,1,signal). I need to know how does it work.
Thankss

Answers (1)

Daniel Shub
Daniel Shub on 13 Dec 2011
  6 Comments
khatereh
khatereh on 6 Jan 2012
Thanks for your reply. I calculated coefficient b of low pass filter it is a FIR filter so the a is equal to 1. What should be the input value of z? if you look at the code the z gets updated each time and the final out put of the signal is related to that. I am confused. :(
Daniel Shub
Daniel Shub on 6 Jan 2012
I am guessing you want to leave it out. The zi/zf input/outputs are most useful for when you are filtering in blocks. I believe that if you leave zi out, MATLAB assumes that the input has been zero for a very long time.

Sign in to comment.

Categories

Find more on Statistics and Linear Algebra in Help Center and File Exchange

Community Treasure Hunt

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

Start Hunting!