Analog and Digital filters can be defined by their Type through four simple steps.

1. SELECTING A FILTER TYPE
   Super FILTER supports an extensive selection of filter types.   The filter definition by type method is based on the user's choice of the type of filter: Butterworth, Chebyshev, Bessel, Real Pole, Gaussian up to 6 dB, Gaussian up to 12 dB, Linear 0.05 deg, Linear 0.5 deg, Elliptic, and Inverse Chebyshev.

2. SELECTING A FILTER FUNCTION
   After selecting the desired filter type, the user specifies the filter function that will be associated with the new design. Once the type and function of the desired filter is specified, the user is prompted for a few more numerical pieces of information, which vary depending on the selected function and type.

3. PROVIDING INPUT INFORMATION
   Filters of type Butterworth, Chebyshev, Bessel, Real Pole, Gaussian, and Linear share a procedure, the Inverse Chebyshev Type has a procedure, and the Elliptic filter Type has a unique procedure.

4. SELECTING A DIGITAL WINDOW OR TRANSFORMATION
   Digital definitions are available in FIR windows(Rectangular, Triangular, Hanning, Hamming, Raised cosine, Blackman, Kaiser, Dolph-Chebyshev) or IIR Transformations(Impulse Invariance, Bilinear).

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