ON 20051229@10:36:26 PM at page:
http://techref.massmind.org/techref/logic/dsps.htm#38715.9419675926
James Newton[JMN-EFP-786] See also:
http://kmt.hku.nl/~pieter/SOFT/RESP/html/PoZeTools.html
Command line and CGI-BIN applications written in ANSI-C that: Given a set of poles and zeros, plots the frequency response, calculates filter coefficients, plots the impulse response and prints the linear difference equation.