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Topic: how remove unwanted high frequencies in MATLAB?
Replies: 11   Last Post: Apr 23, 2013 3:51 AM

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ghasem

Posts: 98
Registered: 4/13/13
Re: how remove unwanted high frequencies in MATLAB?
Posted: Apr 22, 2013 6:59 PM
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> Well, when you do the Fourier Series summation, just leave out the components with frequencies greater than f1.
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exactly,my problem is here.I want to remove frequencies higher than f1,but I don't know how code it in MATLAB?
for example,following code is imperfect.please perfect it.
data1 = rand(1,n) % suppose data1 is my data.
data2 = dct(data) % data2 is discrete cosine transform of data1.

% now!How draw it's figure in discrete frequency domain and leave out f > f1 ?
ghasem



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