FREE BESSEL - Free Downloads

The special function calculator is a double interpreter specialized in the mathematical special functions : Gamma, Bessel, Airy, Exponential integral, Clausen, Rieman Zeta, Hurwitz zeta etc...Active filter design software for lowpass, highpass, bandpass and bandstop electronic filters using resistors, capacitors and op amps. Provides Butterworth, Chebyshev, Elliptic and Bessel Approximations to order 20, with a variety of circuit choices.