Discrete FIR Filter help
Show older comments
I have trouble with getting the Discrete FIR filter to work. It seems that the block is feeding out as many outputs as I have coefficients, even when direct form should add them together.
First off, I am using a coefficients list that I generated from here: http://t-filter.engineerjs.com/
I have it set as follows: Coefficient source - dialog parameter Filter structure - direct form Coefficients - [-0.007775715121256268 -0.007938974136595613 -0.009534265788246128 -0.008779578259641298 -0.004381884421750879 0.004666131585205163 0.0188044731228937 0.03764144706001848 0.05992101812383003 0.08357444021744635 0.10601855702701225 0.12454015906119098 0.13674393462068657 0.14100385434561774 0.13674393462068657 0.12454015906119098 0.10601855702701225 0.08357444021744635 0.05992101812383003 0.03764144706001848 0.0188044731228937 0.004666131585205163 -0.004381884421750879 -0.008779578259641298 -0.009534265788246128 -0.007938974136595613 -0.007775715121256268] Input processing - elements as channels - sample based Input states - 0 sample time - -1 Data Types - all defaults
Thanks, John
1 Comment
John Backman
on 6 Sep 2018
Answers (1)
Dimitris Kalogiros
on 6 Sep 2018
0 votes
1) Check the input. Is it "sample based" or it is a sample
2) Check how you watch the output
3) Of course you put the coefficients as "Numerator" and you put [1] as "Denominator". Are you ?
Categories
Find more on Get Started with DSP System Toolbox in Help Center and File Exchange
Products
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!