Z-TRANSFORM TUTORIAL (Apple & IBM only) CAT.# 173-D01-38

  This is the second selection in a complex plane analysis educational series,
  the first being FAST FOURIER TRANSFORM TUTORIAL. In Z-TRANSFORM TUTORIAL
  poles and zeroes and their relation to the Z-transform are described
  theoretically (in the manual). The resulting filter response function is
  discussed with respect to rational polynomials and "tapped delay lines". The
  tapped delay line representation is shown to be amenable to a "difference
  equation" implementation of a digital filter.

  The software is keyed to the manual. You may enter either the pole/zero
  representation, or the rational polynomial filter function coefficients for
  up to 30 poles and zeroes. If you give the poles and zeroes, the program
  calculates the transfer function. If you give the transfer function, the
  program will give you the poles and zeroes. Also, you are provided with high
  resolution plots of the amplitude response and impulse and step function
  responses. Several examples are given.

  If you are interested in learning about the Z-transform, the" unit circle",
  poles and zeroes, and so on, try Z-TRANSFORM TUTORIAL.