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buttmag Scilab Group Scilab Function buttmag
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buttmag - response of Butterworth filter
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[h]=buttmag(order,omegac,sample)
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order : integer : filter order
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omegac : real : cut-off frequency in Hertz
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sample : vector of frequency where buttmag is evaluated
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h : Butterworth filter values at sample points
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squared magnitude response of a Butterworth filter omegac = cutoff
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frequency ; sample = sample of frequencies
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//squared magnitude response of Butterworth filter
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h=buttmag(13,300,1:1000);
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mag=20*log(h)'/log(10);
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plot2d((1:1000)',mag,[2],"011"," ",[0,-180,1000,20])