Signal Processing Toolbox

Magnitude Specifications Region: Bandstop Butterworth

If Specify order is selected in the Filter Order region, the attenuation at the cutoff frequencies is fixed at 3 dB (half the passband power).

If Minimum order is selected in the Filter Order region, select the units for magnitude response characteristics from the Units list:

• dB for magnitude response characteristics in decibels (default)
• Squared for squared magnitude response characteristics

Specify the following magnitude response characteristics in the text boxes:

• Ripple in the first passband (Apass1 or Epass1)
• Stopband attenuation (Astop or Estop)
• Ripple in the second passband (Apass2 or Epass2)

Magnitude Specifications Region: Bandpass Window

Magnitude Specifications Region: Bandstop Chebyshev Type I