20 lines
513 B
Matlab
20 lines
513 B
Matlab
function output_y = DarellbandpassFilter(y,Fs,LOW,MED,HIGH)
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Len = length(y);
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F = Fs * (-Len/2 : (Len/2 - 1))/Len ;
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Mod_Freq = fftshift(fft(y));
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lenf = length(F);
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output = 0 .* Mod_Freq; % zero array of len f
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for n = 1:lenf
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if ((LOW < abs(F(n))) && HIGH > abs(F(n)))
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output(n) = 1;
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else
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output(n) = 0;
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end
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end
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filtered_Mod_Freq = fftshift(Mod_Freq .* output);
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output_y = real(ifft(filtered_Mod_Freq));
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end |