Need help to determine stopband
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Daemian
am 4 Mär. 2015
Kommentiert: Star Strider
am 4 Mär. 2015
I got a frequency of 6 - 16 Hz to pass through. but how do i determine what is my stopband?
xd = double(myRecording); % Convert to ‘double’
Fs = 8000; % Sampling Frequency
Fn = Fs/2; % Nyquist Frequency
Fpb = [6 16]/Fn; % Passband
Fsb = []/Fn; % Stopband
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Star Strider
am 4 Mär. 2015
If you’re designing a bandpass filter, everything within [6 16] Hz (normalised by ‘Fn’ as you correctly compute) is your passband. Everything else is your stopband by definition, so you don’t need to define it specifically. If you need to define passband and stopband ripple (a requirment of buttord and related functions), choose 1 and 10 dB respectively.
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