Specify a transfer function

Filter networks generated by FA usually are cascade networks with approximately unity bandwidth. After generation, the networks can be transformed to ladder networks, and the bandwidth can be scaled to any positive value. However, most analyses and transformations are numerically better conditioned for a unity-bandwidth filter. It is therefore advisable to perform as many as possible operations before changing the bandwidth to the target value.

- Butterworth
- Chebyshev
- Inverse Chebyshev
- Bessel
- Elliptic
- Gaussian
- Gauss-Chebyshev
- Bessel-Chebyshev
- Ripple group delay
- Custom pole pattern

2009-06-03