Code:
dt = 0.001; % sampling time (seconds per sample)
Fs = 1/dt; % sampling rate (samples per second)
Fnyq = Fs/2; % Nyquist frequency (hertz)
Fco = fm + bw; % Cut-off frequency (hertz)
wn = Fco/Fnyq; % Normalized cut-off (dimensionless)
Explanation:
- dt is the sampling time (in seconds per sample)
- Fs is the sampling rate (in samples per second)
- Fnyq is the Nyquist frequency (in hertz)
- Fco is the cutoff frequency (in hertz)
- bw = bandwidth (in hertz)
- Fc is not needed to compute wn
You should make sure that the following conditions are true:
bw << fm << fc
and
bw << fm << Fs
HTH.
Rick
