Signal Processing Toolbox

Frequency Specifications Region: Highpass Butterworth

Select the units for frequency specifications from the Units list:

• Hz (default)
• kHz
• MHz
• Normalized (0 to 1), where 1 corresponds to the Nyquist frequency

If Specify order is selected in the Filter Order region, specify the following frequencies in the text boxes:

• Sampling frequency (Fs) - required when Hz, kHz, or MHz is selected
• Cutoff frequency (Fc or wc) - the frequency at which the magnitude response is 3 dB below the passband gain

If Minimum order is selected in the Filter Order region, specify the following frequencies in the text boxes:

• Sampling frequency (Fs) - required when Hz, kHz, or MHz is selected
• End of the stopband (Fstop or wstop)
• Beginning of the passband (Fpass or wpass)

Frequency Specifications Region: Lowpass Window

Frequency Specifications Region: Highpass Chebyshev Type I