Find the order of a Butter-worth low pass filter in Matlab
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Nathan Jaqua
el 2 de Nov. de 2019
Respondida: Star Strider
el 2 de Nov. de 2019
I have a Butter-worth low pass filter that I need to construct with the following specifications down below. The order of the filter is N = 11. I don't know how to construct such a filteri n Matlab. Can someone please help?
Fs = 44.1 Khz,
fpass = 1000 , αp = 1 dB , fstop = 2000 , αs = 60 dB
We are given an audio file- ("twoSounds.wav") to call in a MATlab f(x)
Load the file into the Matlab and filter it out using your constructed filter. Write your observation.
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Star Strider
el 2 de Nov. de 2019
Specifically note the discussion in Limitations, and use this implementattion of your filter (copied from the documentation, with slight editing):
% Zero-Pole-Gain design
[z,p,k] = butter(n,Wn,ftype);
[sos,g] = zp2sos(z,p,k);
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