MATLAB Answers

Unable to resolve the name dsp.FIRFilter.

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Veeresh Dammur
Veeresh Dammur on 23 May 2021
Answered: Veeresh Dammur on 25 May 2021
Hi all,
I am newbie to MATLAB. I was trying out this LMS filter MATLAB example, but gets the following error
"Unable to resolve the name dsp.FIRFilter."
signal = sin(2*pi*0.055*(0:1000-1)');
noise = randn(1000,1);
filt = dsp.FIRFilter;
filt.Numerator = fir1(11,0.4);
fnoise = filt(noise);
d = signal + fnoise;
Do we need to have separate licence to run the tutorial?
PS: Currently I have licenses for the following products,

Answers (2)

Uday Pradhan
Uday Pradhan on 25 May 2021
Hi Veeresh,
The dsp.FIRFilter system object is part of the DSP System toolbox which is a separate licensed product. You can however try out the code using MATLAB online.
Note: Please check if you are eligible to access MATLAB online from this page.

Veeresh Dammur
Veeresh Dammur on 25 May 2021
Hi Uday,
Thanks for the response. I believe we need to have a license to try out the code on MATLAB online too. I receive the same kind of error over there.

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