IIR explorer is a small Windows app to explore digital filters in an intuitive way: move poles and zeros on the complex plane and see in real time how this affects the magnitude and phase response of the filter.
Or you can select one of a few simple low pass filter designs and see how the poles move when you change the filter's cutoff frequency and Q factor.
The program assumes that you have a basic understanding of digital filters...
preview:
http://www.terdina.net/iir/iir_explorer.html
9/4/2007
