How to design FIR lowpass filter using matlab. Note : Do not write matlab code. Only...

Free

60.1K

Verified Solution

Question

Electrical Engineering

How to design FIR lowpass filter using matlab.
Note : Do not write matlab code. Only explain the steps ofdesigning filter

Answer & Explanation Solved by verified expert

4.4 Ratings (927 Votes)

1.)you can use the designfilt function and specify the input parameters for example), 'StopbandFrequency', 0.35, 'PassbandRipple', 0.25, StopbandAttenuation', 50, 'DesignMethod',\"kaiserwin\")

And you can use the fvtool to visualise the filter response.

lpFilt = designfilt('lowpassfir','PassbandFrequency',0.2, ...
'StopbandFrequency',0.35,'PassbandRipple',0.25, ...
'StopbandAttenuation',50,'DesignMethod','kaiserwin');
fvtool(lpFilt)

type =low pass filter--lowpassfir
% StopbandAttenuation-- =50dB
%window type =kaiser
% pass band frequency =0.2*pi
% stop band frequency =0.35*pi
%pass band ripple =0.25db

2.) another way is we can start by specifying the number of filter taps N = 31

specify the cut off frequencyÂ Â

specify the sampling rate

specify the number of poles or transfer function

determine the filter order

use the fir2 function to define the filter

use the freqz to find the filter coefficients

Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:

Unlimited Question Access with detailed Answers
Zin AI - 3 Million Words
10 Dall-E 3 Images
20 Plot Generations
Conversation with Dialogue Memory
No Ads, Ever!
Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!

Become a Member